Merge branch '3.1-rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
* '3.1-rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (21 commits)
target: Convert acl_node_lock to be IRQ-disabling
target: Make locking in transport_deregister_session() IRQ safe
tcm_fc: init/exit functions should not be protected by "#ifdef MODULE"
target: Print subpage too for unhandled MODE SENSE pages
iscsi-target: Fix iscsit_allocate_se_cmd_for_tmr failure path bugs
iscsi-target: Implement iSCSI target IPv6 address printing.
target: Fix task SGL chaining breakage with transport_allocate_data_tasks
target: Fix task count > 1 handling breakage and use max_sector page alignment
target: Add missing DATA_SG_IO transport_cmd_get_valid_sectors check
target: Fix SYNCHRONIZE_CACHE zero LBA + range breakage
target: Remove duplicate task completions in transport_emulate_control_cdb
target: Fix WRITE_SAME usage with transport_get_size
target: Add WRITE_SAME (10) parsing and refactor passthrough checks
target: Fix write payload exception handling with ->new_cmd_map
iscsi-target: forever loop bug in iscsit_attach_ooo_cmdsn()
iscsi-target: remove duplicate return
target: Convert target_core_rd.c to use use BUG_ON
iscsi-target: Fix leak on failure in iscsi_copy_param_list()
target: Use ERR_CAST inlined function
target: Make standard INQUIRY return 'not connected' for tpg_virt_lun0
...
diff --git a/Documentation/PCI/MSI-HOWTO.txt b/Documentation/PCI/MSI-HOWTO.txt
index 3f5e0b0..53e6fca 100644
--- a/Documentation/PCI/MSI-HOWTO.txt
+++ b/Documentation/PCI/MSI-HOWTO.txt
@@ -45,7 +45,7 @@
bridges). In order to ensure that all the data has arrived in memory,
the interrupt handler must read a register on the device which raised
the interrupt. PCI transaction ordering rules require that all the data
-arrives in memory before the value can be returned from the register.
+arrive in memory before the value may be returned from the register.
Using MSIs avoids this problem as the interrupt-generating write cannot
pass the data writes, so by the time the interrupt is raised, the driver
knows that all the data has arrived in memory.
@@ -86,13 +86,13 @@
int pci_enable_msi(struct pci_dev *dev)
-A successful call will allocate ONE interrupt to the device, regardless
-of how many MSIs the device supports. The device will be switched from
+A successful call allocates ONE interrupt to the device, regardless
+of how many MSIs the device supports. The device is switched from
pin-based interrupt mode to MSI mode. The dev->irq number is changed
-to a new number which represents the message signaled interrupt.
-This function should be called before the driver calls request_irq()
-since enabling MSIs disables the pin-based IRQ and the driver will not
-receive interrupts on the old interrupt.
+to a new number which represents the message signaled interrupt;
+consequently, this function should be called before the driver calls
+request_irq(), because an MSI is delivered via a vector that is
+different from the vector of a pin-based interrupt.
4.2.2 pci_enable_msi_block
@@ -111,20 +111,20 @@
If this function returns a negative number, it indicates an error and
the driver should not attempt to request any more MSI interrupts for
-this device. If this function returns a positive number, it will be
-less than 'count' and indicate the number of interrupts that could have
-been allocated. In neither case will the irq value have been
-updated, nor will the device have been switched into MSI mode.
+this device. If this function returns a positive number, it is
+less than 'count' and indicates the number of interrupts that could have
+been allocated. In neither case is the irq value updated or the device
+switched into MSI mode.
The device driver must decide what action to take if
-pci_enable_msi_block() returns a value less than the number asked for.
-Some devices can make use of fewer interrupts than the maximum they
-request; in this case the driver should call pci_enable_msi_block()
+pci_enable_msi_block() returns a value less than the number requested.
+For instance, the driver could still make use of fewer interrupts;
+in this case the driver should call pci_enable_msi_block()
again. Note that it is not guaranteed to succeed, even when the
'count' has been reduced to the value returned from a previous call to
pci_enable_msi_block(). This is because there are multiple constraints
on the number of vectors that can be allocated; pci_enable_msi_block()
-will return as soon as it finds any constraint that doesn't allow the
+returns as soon as it finds any constraint that doesn't allow the
call to succeed.
4.2.3 pci_disable_msi
@@ -137,10 +137,10 @@
interrupt(s). The interrupt may subsequently be assigned to another
device, so drivers should not cache the value of dev->irq.
-A device driver must always call free_irq() on the interrupt(s)
-for which it has called request_irq() before calling this function.
-Failure to do so will result in a BUG_ON(), the device will be left with
-MSI enabled and will leak its vector.
+Before calling this function, a device driver must always call free_irq()
+on any interrupt for which it previously called request_irq().
+Failure to do so results in a BUG_ON(), leaving the device with
+MSI enabled and thus leaking its vector.
4.3 Using MSI-X
@@ -155,10 +155,10 @@
};
This allows for the device to use these interrupts in a sparse fashion;
-for example it could use interrupts 3 and 1027 and allocate only a
+for example, it could use interrupts 3 and 1027 and yet allocate only a
two-element array. The driver is expected to fill in the 'entry' value
-in each element of the array to indicate which entries it wants the kernel
-to assign interrupts for. It is invalid to fill in two entries with the
+in each element of the array to indicate for which entries the kernel
+should assign interrupts; it is invalid to fill in two entries with the
same number.
4.3.1 pci_enable_msix
@@ -168,10 +168,11 @@
Calling this function asks the PCI subsystem to allocate 'nvec' MSIs.
The 'entries' argument is a pointer to an array of msix_entry structs
which should be at least 'nvec' entries in size. On success, the
-function will return 0 and the device will have been switched into
-MSI-X interrupt mode. The 'vector' elements in each entry will have
-been filled in with the interrupt number. The driver should then call
-request_irq() for each 'vector' that it decides to use.
+device is switched into MSI-X mode and the function returns 0.
+The 'vector' member in each entry is populated with the interrupt number;
+the driver should then call request_irq() for each 'vector' that it
+decides to use. The device driver is responsible for keeping track of the
+interrupts assigned to the MSI-X vectors so it can free them again later.
If this function returns a negative number, it indicates an error and
the driver should not attempt to allocate any more MSI-X interrupts for
@@ -181,16 +182,14 @@
This function, in contrast with pci_enable_msi(), does not adjust
dev->irq. The device will not generate interrupts for this interrupt
-number once MSI-X is enabled. The device driver is responsible for
-keeping track of the interrupts assigned to the MSI-X vectors so it can
-free them again later.
+number once MSI-X is enabled.
Device drivers should normally call this function once per device
during the initialization phase.
-It is ideal if drivers can cope with a variable number of MSI-X interrupts,
+It is ideal if drivers can cope with a variable number of MSI-X interrupts;
there are many reasons why the platform may not be able to provide the
-exact number a driver asks for.
+exact number that a driver asks for.
A request loop to achieve that might look like:
@@ -212,15 +211,15 @@
void pci_disable_msix(struct pci_dev *dev)
-This API should be used to undo the effect of pci_enable_msix(). It frees
+This function should be used to undo the effect of pci_enable_msix(). It frees
the previously allocated message signaled interrupts. The interrupts may
subsequently be assigned to another device, so drivers should not cache
the value of the 'vector' elements over a call to pci_disable_msix().
-A device driver must always call free_irq() on the interrupt(s)
-for which it has called request_irq() before calling this function.
-Failure to do so will result in a BUG_ON(), the device will be left with
-MSI enabled and will leak its vector.
+Before calling this function, a device driver must always call free_irq()
+on any interrupt for which it previously called request_irq().
+Failure to do so results in a BUG_ON(), leaving the device with
+MSI-X enabled and thus leaking its vector.
4.3.3 The MSI-X Table
@@ -232,10 +231,10 @@
4.4 Handling devices implementing both MSI and MSI-X capabilities
If a device implements both MSI and MSI-X capabilities, it can
-run in either MSI mode or MSI-X mode but not both simultaneously.
+run in either MSI mode or MSI-X mode, but not both simultaneously.
This is a requirement of the PCI spec, and it is enforced by the
PCI layer. Calling pci_enable_msi() when MSI-X is already enabled or
-pci_enable_msix() when MSI is already enabled will result in an error.
+pci_enable_msix() when MSI is already enabled results in an error.
If a device driver wishes to switch between MSI and MSI-X at runtime,
it must first quiesce the device, then switch it back to pin-interrupt
mode, before calling pci_enable_msi() or pci_enable_msix() and resuming
@@ -251,7 +250,7 @@
above, MSI-X supports any number of interrupts between 1 and 2048.
In constrast, MSI is restricted to a maximum of 32 interrupts (and
must be a power of two). In addition, the MSI interrupt vectors must
-be allocated consecutively, so the system may not be able to allocate
+be allocated consecutively, so the system might not be able to allocate
as many vectors for MSI as it could for MSI-X. On some platforms, MSI
interrupts must all be targeted at the same set of CPUs whereas MSI-X
interrupts can all be targeted at different CPUs.
@@ -281,7 +280,7 @@
Using 'lspci -v' (as root) may show some devices with "MSI", "Message
Signalled Interrupts" or "MSI-X" capabilities. Each of these capabilities
-has an 'Enable' flag which will be followed with either "+" (enabled)
+has an 'Enable' flag which is followed with either "+" (enabled)
or "-" (disabled).
@@ -298,7 +297,7 @@
Some host chipsets simply don't support MSIs properly. If we're
lucky, the manufacturer knows this and has indicated it in the ACPI
-FADT table. In this case, Linux will automatically disable MSIs.
+FADT table. In this case, Linux automatically disables MSIs.
Some boards don't include this information in the table and so we have
to detect them ourselves. The complete list of these is found near the
quirk_disable_all_msi() function in drivers/pci/quirks.c.
@@ -317,7 +316,7 @@
PCI configuration space (especially the Hypertransport chipsets such
as the nVidia nForce and Serverworks HT2000). As with host chipsets,
Linux mostly knows about them and automatically enables MSIs if it can.
-If you have a bridge which Linux doesn't yet know about, you can enable
+If you have a bridge unknown to Linux, you can enable
MSIs in configuration space using whatever method you know works, then
enable MSIs on that bridge by doing:
@@ -327,7 +326,7 @@
0000:00:0e.0).
To disable MSIs, echo 0 instead of 1. Changing this value should be
-done with caution as it can break interrupt handling for all devices
+done with caution as it could break interrupt handling for all devices
below this bridge.
Again, please notify linux-pci@vger.kernel.org of any bridges that need
@@ -336,7 +335,7 @@
5.3. Disabling MSIs on a single device
Some devices are known to have faulty MSI implementations. Usually this
-is handled in the individual device driver but occasionally it's necessary
+is handled in the individual device driver, but occasionally it's necessary
to handle this with a quirk. Some drivers have an option to disable use
of MSI. While this is a convenient workaround for the driver author,
it is not good practise, and should not be emulated.
@@ -350,7 +349,7 @@
have enabled CONFIG_PCI_MSI.
Then, 'lspci -t' gives the list of bridges above a device. Reading
-/sys/bus/pci/devices/*/msi_bus will tell you whether MSI are enabled (1)
+/sys/bus/pci/devices/*/msi_bus will tell you whether MSIs are enabled (1)
or disabled (0). If 0 is found in any of the msi_bus files belonging
to bridges between the PCI root and the device, MSIs are disabled.
diff --git a/Documentation/block/cfq-iosched.txt b/Documentation/block/cfq-iosched.txt
index e578fee..6d670f5 100644
--- a/Documentation/block/cfq-iosched.txt
+++ b/Documentation/block/cfq-iosched.txt
@@ -43,3 +43,74 @@
to IOPS mode and starts providing fairness in terms of number of requests
dispatched. Note that this mode switching takes effect only for group
scheduling. For non-cgroup users nothing should change.
+
+CFQ IO scheduler Idling Theory
+===============================
+Idling on a queue is primarily about waiting for the next request to come
+on same queue after completion of a request. In this process CFQ will not
+dispatch requests from other cfq queues even if requests are pending there.
+
+The rationale behind idling is that it can cut down on number of seeks
+on rotational media. For example, if a process is doing dependent
+sequential reads (next read will come on only after completion of previous
+one), then not dispatching request from other queue should help as we
+did not move the disk head and kept on dispatching sequential IO from
+one queue.
+
+CFQ has following service trees and various queues are put on these trees.
+
+ sync-idle sync-noidle async
+
+All cfq queues doing synchronous sequential IO go on to sync-idle tree.
+On this tree we idle on each queue individually.
+
+All synchronous non-sequential queues go on sync-noidle tree. Also any
+request which are marked with REQ_NOIDLE go on this service tree. On this
+tree we do not idle on individual queues instead idle on the whole group
+of queues or the tree. So if there are 4 queues waiting for IO to dispatch
+we will idle only once last queue has dispatched the IO and there is
+no more IO on this service tree.
+
+All async writes go on async service tree. There is no idling on async
+queues.
+
+CFQ has some optimizations for SSDs and if it detects a non-rotational
+media which can support higher queue depth (multiple requests at in
+flight at a time), then it cuts down on idling of individual queues and
+all the queues move to sync-noidle tree and only tree idle remains. This
+tree idling provides isolation with buffered write queues on async tree.
+
+FAQ
+===
+Q1. Why to idle at all on queues marked with REQ_NOIDLE.
+
+A1. We only do tree idle (all queues on sync-noidle tree) on queues marked
+ with REQ_NOIDLE. This helps in providing isolation with all the sync-idle
+ queues. Otherwise in presence of many sequential readers, other
+ synchronous IO might not get fair share of disk.
+
+ For example, if there are 10 sequential readers doing IO and they get
+ 100ms each. If a REQ_NOIDLE request comes in, it will be scheduled
+ roughly after 1 second. If after completion of REQ_NOIDLE request we
+ do not idle, and after a couple of milli seconds a another REQ_NOIDLE
+ request comes in, again it will be scheduled after 1second. Repeat it
+ and notice how a workload can lose its disk share and suffer due to
+ multiple sequential readers.
+
+ fsync can generate dependent IO where bunch of data is written in the
+ context of fsync, and later some journaling data is written. Journaling
+ data comes in only after fsync has finished its IO (atleast for ext4
+ that seemed to be the case). Now if one decides not to idle on fsync
+ thread due to REQ_NOIDLE, then next journaling write will not get
+ scheduled for another second. A process doing small fsync, will suffer
+ badly in presence of multiple sequential readers.
+
+ Hence doing tree idling on threads using REQ_NOIDLE flag on requests
+ provides isolation from multiple sequential readers and at the same
+ time we do not idle on individual threads.
+
+Q2. When to specify REQ_NOIDLE
+A2. I would think whenever one is doing synchronous write and not expecting
+ more writes to be dispatched from same context soon, should be able
+ to specify REQ_NOIDLE on writes and that probably should work well for
+ most of the cases.
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 6ca1f5c..614d038 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1350,9 +1350,12 @@
it is equivalent to "nosmp", which also disables
the IO APIC.
- max_loop= [LOOP] Maximum number of loopback devices that can
- be mounted
- Format: <1-256>
+ max_loop= [LOOP] The number of loop block devices that get
+ (loop.max_loop) unconditionally pre-created at init time. The default
+ number is configured by BLK_DEV_LOOP_MIN_COUNT. Instead
+ of statically allocating a predefined number, loop
+ devices can be requested on-demand with the
+ /dev/loop-control interface.
mcatest= [IA-64]
diff --git a/Documentation/networking/00-INDEX b/Documentation/networking/00-INDEX
index 4edd78d..bbce121 100644
--- a/Documentation/networking/00-INDEX
+++ b/Documentation/networking/00-INDEX
@@ -1,13 +1,21 @@
00-INDEX
- this file
+3c359.txt
+ - information on the 3Com TokenLink Velocity XL (3c5359) driver.
3c505.txt
- information on the 3Com EtherLink Plus (3c505) driver.
+3c509.txt
+ - information on the 3Com Etherlink III Series Ethernet cards.
6pack.txt
- info on the 6pack protocol, an alternative to KISS for AX.25
DLINK.txt
- info on the D-Link DE-600/DE-620 parallel port pocket adapters
PLIP.txt
- PLIP: The Parallel Line Internet Protocol device driver
+README.ipw2100
+ - README for the Intel PRO/Wireless 2100 driver.
+README.ipw2200
+ - README for the Intel PRO/Wireless 2915ABG and 2200BG driver.
README.sb1000
- info on General Instrument/NextLevel SURFboard1000 cable modem.
alias.txt
@@ -20,8 +28,12 @@
- info on where to get ATM programs and support for Linux.
ax25.txt
- info on using AX.25 and NET/ROM code for Linux
+batman-adv.txt
+ - B.A.T.M.A.N routing protocol on top of layer 2 Ethernet Frames.
baycom.txt
- info on the driver for Baycom style amateur radio modems
+bonding.txt
+ - Linux Ethernet Bonding Driver HOWTO: link aggregation in Linux.
bridge.txt
- where to get user space programs for ethernet bridging with Linux.
can.txt
@@ -34,32 +46,60 @@
- Conexant AccessRunner USB ADSL Modem
cxacru-cf.py
- Conexant AccessRunner USB ADSL Modem configuration file parser
+cxgb.txt
+ - Release Notes for the Chelsio N210 Linux device driver.
+dccp.txt
+ - the Datagram Congestion Control Protocol (DCCP) (RFC 4340..42).
de4x5.txt
- the Digital EtherWORKS DE4?? and DE5?? PCI Ethernet driver
decnet.txt
- info on using the DECnet networking layer in Linux.
depca.txt
- the Digital DEPCA/EtherWORKS DE1?? and DE2?? LANCE Ethernet driver
+dl2k.txt
+ - README for D-Link DL2000-based Gigabit Ethernet Adapters (dl2k.ko).
+dm9000.txt
+ - README for the Simtec DM9000 Network driver.
dmfe.txt
- info on the Davicom DM9102(A)/DM9132/DM9801 fast ethernet driver.
+dns_resolver.txt
+ - The DNS resolver module allows kernel servies to make DNS queries.
+driver.txt
+ - Softnet driver issues.
e100.txt
- info on Intel's EtherExpress PRO/100 line of 10/100 boards
e1000.txt
- info on Intel's E1000 line of gigabit ethernet boards
+e1000e.txt
+ - README for the Intel Gigabit Ethernet Driver (e1000e).
eql.txt
- serial IP load balancing
ewrk3.txt
- the Digital EtherWORKS 3 DE203/4/5 Ethernet driver
+fib_trie.txt
+ - Level Compressed Trie (LC-trie) notes: a structure for routing.
filter.txt
- Linux Socket Filtering
fore200e.txt
- FORE Systems PCA-200E/SBA-200E ATM NIC driver info.
framerelay.txt
- info on using Frame Relay/Data Link Connection Identifier (DLCI).
+gen_stats.txt
+ - Generic networking statistics for netlink users.
+generic_hdlc.txt
+ - The generic High Level Data Link Control (HDLC) layer.
generic_netlink.txt
- info on Generic Netlink
+gianfar.txt
+ - Gianfar Ethernet Driver.
ieee802154.txt
- Linux IEEE 802.15.4 implementation, API and drivers
+ifenslave.c
+ - Configure network interfaces for parallel routing (bonding).
+igb.txt
+ - README for the Intel Gigabit Ethernet Driver (igb).
+igbvf.txt
+ - README for the Intel Gigabit Ethernet Driver (igbvf).
ip-sysctl.txt
- /proc/sys/net/ipv4/* variables
ip_dynaddr.txt
@@ -68,41 +108,117 @@
- AppleTalk-IP Decapsulation and AppleTalk-IP Encapsulation
iphase.txt
- Interphase PCI ATM (i)Chip IA Linux driver info.
+ipv6.txt
+ - Options to the ipv6 kernel module.
+ipvs-sysctl.txt
+ - Per-inode explanation of the /proc/sys/net/ipv4/vs interface.
irda.txt
- where to get IrDA (infrared) utilities and info for Linux.
+ixgb.txt
+ - README for the Intel 10 Gigabit Ethernet Driver (ixgb).
+ixgbe.txt
+ - README for the Intel 10 Gigabit Ethernet Driver (ixgbe).
+ixgbevf.txt
+ - README for the Intel Virtual Function (VF) Driver (ixgbevf).
+l2tp.txt
+ - User guide to the L2TP tunnel protocol.
lapb-module.txt
- programming information of the LAPB module.
ltpc.txt
- the Apple or Farallon LocalTalk PC card driver
+mac80211-injection.txt
+ - HOWTO use packet injection with mac80211
multicast.txt
- Behaviour of cards under Multicast
+multiqueue.txt
+ - HOWTO for multiqueue network device support.
+netconsole.txt
+ - The network console module netconsole.ko: configuration and notes.
+netdev-features.txt
+ - Network interface features API description.
netdevices.txt
- info on network device driver functions exported to the kernel.
+netif-msg.txt
+ - Design of the network interface message level setting (NETIF_MSG_*).
+nfc.txt
+ - The Linux Near Field Communication (NFS) subsystem.
olympic.txt
- IBM PCI Pit/Pit-Phy/Olympic Token Ring driver info.
+operstates.txt
+ - Overview of network interface operational states.
+packet_mmap.txt
+ - User guide to memory mapped packet socket rings (PACKET_[RT]X_RING).
+phonet.txt
+ - The Phonet packet protocol used in Nokia cellular modems.
+phy.txt
+ - The PHY abstraction layer.
+pktgen.txt
+ - User guide to the kernel packet generator (pktgen.ko).
policy-routing.txt
- IP policy-based routing
+ppp_generic.txt
+ - Information about the generic PPP driver.
+proc_net_tcp.txt
+ - Per inode overview of the /proc/net/tcp and /proc/net/tcp6 interfaces.
+radiotap-headers.txt
+ - Background on radiotap headers.
ray_cs.txt
- Raylink Wireless LAN card driver info.
+rds.txt
+ - Background on the reliable, ordered datagram delivery method RDS.
+regulatory.txt
+ - Overview of the Linux wireless regulatory infrastructure.
+rxrpc.txt
+ - Guide to the RxRPC protocol.
+s2io.txt
+ - Release notes for Neterion Xframe I/II 10GbE driver.
+scaling.txt
+ - Explanation of network scaling techniques: RSS, RPS, RFS, aRFS, XPS.
+sctp.txt
+ - Notes on the Linux kernel implementation of the SCTP protocol.
+secid.txt
+ - Explanation of the secid member in flow structures.
skfp.txt
- SysKonnect FDDI (SK-5xxx, Compaq Netelligent) driver info.
smc9.txt
- the driver for SMC's 9000 series of Ethernet cards
smctr.txt
- SMC TokenCard TokenRing Linux driver info.
+spider-net.txt
+ - README for the Spidernet Driver (as found in PS3 / Cell BE).
+stmmac.txt
+ - README for the STMicro Synopsys Ethernet driver.
+tc-actions-env-rules.txt
+ - rules for traffic control (tc) actions.
+timestamping.txt
+ - overview of network packet timestamping variants.
tcp.txt
- short blurb on how TCP output takes place.
+tcp-thin.txt
+ - kernel tuning options for low rate 'thin' TCP streams.
tlan.txt
- ThunderLAN (Compaq Netelligent 10/100, Olicom OC-2xxx) driver info.
tms380tr.txt
- SysKonnect Token Ring ISA/PCI adapter driver info.
+tproxy.txt
+ - Transparent proxy support user guide.
tuntap.txt
- TUN/TAP device driver, allowing user space Rx/Tx of packets.
+udplite.txt
+ - UDP-Lite protocol (RFC 3828) introduction.
vortex.txt
- info on using 3Com Vortex (3c590, 3c592, 3c595, 3c597) Ethernet cards.
+vxge.txt
+ - README for the Neterion X3100 PCIe Server Adapter.
x25.txt
- general info on X.25 development.
x25-iface.txt
- description of the X.25 Packet Layer to LAPB device interface.
+xfrm_proc.txt
+ - description of the statistics package for XFRM.
+xfrm_sync.txt
+ - sync patches for XFRM enable migration of an SA between hosts.
+xfrm_sysctl.txt
+ - description of the XFRM configuration options.
z8530drv.txt
- info about Linux driver for Z8530 based HDLC cards for AX.25
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index db2a406..8154699 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -992,7 +992,7 @@
TRUE: disable IPv4-mapped address feature
FALSE: enable IPv4-mapped address feature
- Default: FALSE (as specified in RFC2553bis)
+ Default: FALSE (as specified in RFC3493)
IPv6 Fragmentation:
diff --git a/Documentation/networking/scaling.txt b/Documentation/networking/scaling.txt
index 7254b4b..58fd741 100644
--- a/Documentation/networking/scaling.txt
+++ b/Documentation/networking/scaling.txt
@@ -52,7 +52,8 @@
configure. In the bnx2x driver, for instance, this parameter is called
num_queues. A typical RSS configuration would be to have one receive queue
for each CPU if the device supports enough queues, or otherwise at least
-one for each cache domain at a particular cache level (L1, L2, etc.).
+one for each memory domain, where a memory domain is a set of CPUs that
+share a particular memory level (L1, L2, NUMA node, etc.).
The indirection table of an RSS device, which resolves a queue by masked
hash, is usually programmed by the driver at initialization. The
@@ -82,11 +83,17 @@
interrupt processing forms a bottleneck. Spreading load between CPUs
decreases queue length. For low latency networking, the optimal setting
is to allocate as many queues as there are CPUs in the system (or the
-NIC maximum, if lower). Because the aggregate number of interrupts grows
-with each additional queue, the most efficient high-rate configuration
+NIC maximum, if lower). The most efficient high-rate configuration
is likely the one with the smallest number of receive queues where no
-CPU that processes receive interrupts reaches 100% utilization. Per-cpu
-load can be observed using the mpstat utility.
+receive queue overflows due to a saturated CPU, because in default
+mode with interrupt coalescing enabled, the aggregate number of
+interrupts (and thus work) grows with each additional queue.
+
+Per-cpu load can be observed using the mpstat utility, but note that on
+processors with hyperthreading (HT), each hyperthread is represented as
+a separate CPU. For interrupt handling, HT has shown no benefit in
+initial tests, so limit the number of queues to the number of CPU cores
+in the system.
RPS: Receive Packet Steering
@@ -145,7 +152,7 @@
== Suggested Configuration
For a single queue device, a typical RPS configuration would be to set
-the rps_cpus to the CPUs in the same cache domain of the interrupting
+the rps_cpus to the CPUs in the same memory domain of the interrupting
CPU. If NUMA locality is not an issue, this could also be all CPUs in
the system. At high interrupt rate, it might be wise to exclude the
interrupting CPU from the map since that already performs much work.
@@ -154,7 +161,7 @@
receive queue is mapped to each CPU, then RPS is probably redundant
and unnecessary. If there are fewer hardware queues than CPUs, then
RPS might be beneficial if the rps_cpus for each queue are the ones that
-share the same cache domain as the interrupting CPU for that queue.
+share the same memory domain as the interrupting CPU for that queue.
RFS: Receive Flow Steering
@@ -326,7 +333,7 @@
corresponding socket structure for the flow (e.g. a TCP connection).
This transmit queue is used for subsequent packets sent on the flow to
prevent out of order (ooo) packets. The choice also amortizes the cost
-of calling get_xps_queues() over all packets in the connection. To avoid
+of calling get_xps_queues() over all packets in the flow. To avoid
ooo packets, the queue for a flow can subsequently only be changed if
skb->ooo_okay is set for a packet in the flow. This flag indicates that
there are no outstanding packets in the flow, so the transmit queue can
diff --git a/Documentation/virtual/00-INDEX b/Documentation/virtual/00-INDEX
index fe0251c..8e60199 100644
--- a/Documentation/virtual/00-INDEX
+++ b/Documentation/virtual/00-INDEX
@@ -8,3 +8,6 @@
- Extremely simple hypervisor for experimental/educational use.
uml/
- User Mode Linux, builds/runs Linux kernel as a userspace program.
+virtio.txt
+ - Text version of draft virtio spec.
+ See http://ozlabs.org/~rusty/virtio-spec
diff --git a/Documentation/virtual/lguest/lguest.c b/Documentation/virtual/lguest/lguest.c
index 043bd7d..d928c13 100644
--- a/Documentation/virtual/lguest/lguest.c
+++ b/Documentation/virtual/lguest/lguest.c
@@ -1996,6 +1996,9 @@
/* We use a simple helper to copy the arguments separated by spaces. */
concat((char *)(boot + 1), argv+optind+2);
+ /* Set kernel alignment to 16M (CONFIG_PHYSICAL_ALIGN) */
+ boot->hdr.kernel_alignment = 0x1000000;
+
/* Boot protocol version: 2.07 supports the fields for lguest. */
boot->hdr.version = 0x207;
diff --git a/Documentation/virtual/virtio-spec.txt b/Documentation/virtual/virtio-spec.txt
new file mode 100644
index 0000000..a350ae1
--- /dev/null
+++ b/Documentation/virtual/virtio-spec.txt
@@ -0,0 +1,2200 @@
+[Generated file: see http://ozlabs.org/~rusty/virtio-spec/]
+Virtio PCI Card Specification
+v0.9.1 DRAFT
+-
+
+Rusty Russell <rusty@rustcorp.com.au>IBM Corporation (Editor)
+
+2011 August 1.
+
+Purpose and Description
+
+This document describes the specifications of the “virtio” family
+of PCI[LaTeX Command: nomenclature] devices. These are devices
+are found in virtual environments[LaTeX Command: nomenclature],
+yet by design they are not all that different from physical PCI
+devices, and this document treats them as such. This allows the
+guest to use standard PCI drivers and discovery mechanisms.
+
+The purpose of virtio and this specification is that virtual
+environments and guests should have a straightforward, efficient,
+standard and extensible mechanism for virtual devices, rather
+than boutique per-environment or per-OS mechanisms.
+
+ Straightforward: Virtio PCI devices use normal PCI mechanisms
+ of interrupts and DMA which should be familiar to any device
+ driver author. There is no exotic page-flipping or COW
+ mechanism: it's just a PCI device.[footnote:
+This lack of page-sharing implies that the implementation of the
+device (e.g. the hypervisor or host) needs full access to the
+guest memory. Communication with untrusted parties (i.e.
+inter-guest communication) requires copying.
+]
+
+ Efficient: Virtio PCI devices consist of rings of descriptors
+ for input and output, which are neatly separated to avoid cache
+ effects from both guest and device writing to the same cache
+ lines.
+
+ Standard: Virtio PCI makes no assumptions about the environment
+ in which it operates, beyond supporting PCI. In fact the virtio
+ devices specified in the appendices do not require PCI at all:
+ they have been implemented on non-PCI buses.[footnote:
+The Linux implementation further separates the PCI virtio code
+from the specific virtio drivers: these drivers are shared with
+the non-PCI implementations (currently lguest and S/390).
+]
+
+ Extensible: Virtio PCI devices contain feature bits which are
+ acknowledged by the guest operating system during device setup.
+ This allows forwards and backwards compatibility: the device
+ offers all the features it knows about, and the driver
+ acknowledges those it understands and wishes to use.
+
+ Virtqueues
+
+The mechanism for bulk data transport on virtio PCI devices is
+pretentiously called a virtqueue. Each device can have zero or
+more virtqueues: for example, the network device has one for
+transmit and one for receive.
+
+Each virtqueue occupies two or more physically-contiguous pages
+(defined, for the purposes of this specification, as 4096 bytes),
+and consists of three parts:
+
+
++-------------------+-----------------------------------+-----------+
+| Descriptor Table | Available Ring (padding) | Used Ring |
++-------------------+-----------------------------------+-----------+
+
+
+When the driver wants to send buffers to the device, it puts them
+in one or more slots in the descriptor table, and writes the
+descriptor indices into the available ring. It then notifies the
+device. When the device has finished with the buffers, it writes
+the descriptors into the used ring, and sends an interrupt.
+
+Specification
+
+ PCI Discovery
+
+Any PCI device with Vendor ID 0x1AF4, and Device ID 0x1000
+through 0x103F inclusive is a virtio device[footnote:
+The actual value within this range is ignored
+]. The device must also have a Revision ID of 0 to match this
+specification.
+
+The Subsystem Device ID indicates which virtio device is
+supported by the device. The Subsystem Vendor ID should reflect
+the PCI Vendor ID of the environment (it's currently only used
+for informational purposes by the guest).
+
+
++----------------------+--------------------+---------------+
+| Subsystem Device ID | Virtio Device | Specification |
++----------------------+--------------------+---------------+
++----------------------+--------------------+---------------+
+| 1 | network card | Appendix C |
++----------------------+--------------------+---------------+
+| 2 | block device | Appendix D |
++----------------------+--------------------+---------------+
+| 3 | console | Appendix E |
++----------------------+--------------------+---------------+
+| 4 | entropy source | Appendix F |
++----------------------+--------------------+---------------+
+| 5 | memory ballooning | Appendix G |
++----------------------+--------------------+---------------+
+| 6 | ioMemory | - |
++----------------------+--------------------+---------------+
+| 9 | 9P transport | - |
++----------------------+--------------------+---------------+
+
+
+ Device Configuration
+
+To configure the device, we use the first I/O region of the PCI
+device. This contains a virtio header followed by a
+device-specific region.
+
+There may be different widths of accesses to the I/O region; the “
+natural” access method for each field in the virtio header must
+be used (i.e. 32-bit accesses for 32-bit fields, etc), but the
+device-specific region can be accessed using any width accesses,
+and should obtain the same results.
+
+Note that this is possible because while the virtio header is PCI
+(i.e. little) endian, the device-specific region is encoded in
+the native endian of the guest (where such distinction is
+applicable).
+
+ Device Initialization Sequence
+
+We start with an overview of device initialization, then expand
+on the details of the device and how each step is preformed.
+
+ Reset the device. This is not required on initial start up.
+
+ The ACKNOWLEDGE status bit is set: we have noticed the device.
+
+ The DRIVER status bit is set: we know how to drive the device.
+
+ Device-specific setup, including reading the Device Feature
+ Bits, discovery of virtqueues for the device, optional MSI-X
+ setup, and reading and possibly writing the virtio
+ configuration space.
+
+ The subset of Device Feature Bits understood by the driver is
+ written to the device.
+
+ The DRIVER_OK status bit is set.
+
+ The device can now be used (ie. buffers added to the
+ virtqueues)[footnote:
+Historically, drivers have used the device before steps 5 and 6.
+This is only allowed if the driver does not use any features
+which would alter this early use of the device.
+]
+
+If any of these steps go irrecoverably wrong, the guest should
+set the FAILED status bit to indicate that it has given up on the
+device (it can reset the device later to restart if desired).
+
+We now cover the fields required for general setup in detail.
+
+ Virtio Header
+
+The virtio header looks as follows:
+
+
++------------++---------------------+---------------------+----------+--------+---------+---------+---------+--------+
+| Bits || 32 | 32 | 32 | 16 | 16 | 16 | 8 | 8 |
++------------++---------------------+---------------------+----------+--------+---------+---------+---------+--------+
+| Read/Write || R | R+W | R+W | R | R+W | R+W | R+W | R |
++------------++---------------------+---------------------+----------+--------+---------+---------+---------+--------+
+| Purpose || Device | Guest | Queue | Queue | Queue | Queue | Device | ISR |
+| || Features bits 0:31 | Features bits 0:31 | Address | Size | Select | Notify | Status | Status |
++------------++---------------------+---------------------+----------+--------+---------+---------+---------+--------+
+
+
+If MSI-X is enabled for the device, two additional fields
+immediately follow this header:
+
+
++------------++----------------+--------+
+| Bits || 16 | 16 |
+ +----------------+--------+
++------------++----------------+--------+
+| Read/Write || R+W | R+W |
++------------++----------------+--------+
+| Purpose || Configuration | Queue |
+| (MSI-X) || Vector | Vector |
++------------++----------------+--------+
+
+
+Finally, if feature bits (VIRTIO_F_FEATURES_HI) this is
+immediately followed by two additional fields:
+
+
++------------++----------------------+----------------------
+| Bits || 32 | 32
++------------++----------------------+----------------------
+| Read/Write || R | R+W
++------------++----------------------+----------------------
+| Purpose || Device | Guest
+| || Features bits 32:63 | Features bits 32:63
++------------++----------------------+----------------------
+
+
+Immediately following these general headers, there may be
+device-specific headers:
+
+
++------------++--------------------+
+| Bits || Device Specific |
+ +--------------------+
++------------++--------------------+
+| Read/Write || Device Specific |
++------------++--------------------+
+| Purpose || Device Specific... |
+| || |
++------------++--------------------+
+
+
+ Device Status
+
+The Device Status field is updated by the guest to indicate its
+progress. This provides a simple low-level diagnostic: it's most
+useful to imagine them hooked up to traffic lights on the console
+indicating the status of each device.
+
+The device can be reset by writing a 0 to this field, otherwise
+at least one bit should be set:
+
+ ACKNOWLEDGE (1) Indicates that the guest OS has found the
+ device and recognized it as a valid virtio device.
+
+ DRIVER (2) Indicates that the guest OS knows how to drive the
+ device. Under Linux, drivers can be loadable modules so there
+ may be a significant (or infinite) delay before setting this
+ bit.
+
+ DRIVER_OK (3) Indicates that the driver is set up and ready to
+ drive the device.
+
+ FAILED (8) Indicates that something went wrong in the guest,
+ and it has given up on the device. This could be an internal
+ error, or the driver didn't like the device for some reason, or
+ even a fatal error during device operation. The device must be
+ reset before attempting to re-initialize.
+
+ Feature Bits
+
+The least significant 31 bits of the first configuration field
+indicates the features that the device supports (the high bit is
+reserved, and will be used to indicate the presence of future
+feature bits elsewhere). If more than 31 feature bits are
+supported, the device indicates so by setting feature bit 31 (see
+[cha:Reserved-Feature-Bits]). The bits are allocated as follows:
+
+ 0 to 23 Feature bits for the specific device type
+
+ 24 to 40 Feature bits reserved for extensions to the queue and
+ feature negotiation mechanisms
+
+ 41 to 63 Feature bits reserved for future extensions
+
+For example, feature bit 0 for a network device (i.e. Subsystem
+Device ID 1) indicates that the device supports checksumming of
+packets.
+
+The feature bits are negotiated: the device lists all the
+features it understands in the Device Features field, and the
+guest writes the subset that it understands into the Guest
+Features field. The only way to renegotiate is to reset the
+device.
+
+In particular, new fields in the device configuration header are
+indicated by offering a feature bit, so the guest can check
+before accessing that part of the configuration space.
+
+This allows for forwards and backwards compatibility: if the
+device is enhanced with a new feature bit, older guests will not
+write that feature bit back to the Guest Features field and it
+can go into backwards compatibility mode. Similarly, if a guest
+is enhanced with a feature that the device doesn't support, it
+will not see that feature bit in the Device Features field and
+can go into backwards compatibility mode (or, for poor
+implementations, set the FAILED Device Status bit).
+
+Access to feature bits 32 to 63 is enabled by Guest by setting
+feature bit 31. If this bit is unset, Device must assume that all
+feature bits > 31 are unset.
+
+ Configuration/Queue Vectors
+
+When MSI-X capability is present and enabled in the device
+(through standard PCI configuration space) 4 bytes at byte offset
+20 are used to map configuration change and queue interrupts to
+MSI-X vectors. In this case, the ISR Status field is unused, and
+device specific configuration starts at byte offset 24 in virtio
+header structure. When MSI-X capability is not enabled, device
+specific configuration starts at byte offset 20 in virtio header.
+
+Writing a valid MSI-X Table entry number, 0 to 0x7FF, to one of
+Configuration/Queue Vector registers, maps interrupts triggered
+by the configuration change/selected queue events respectively to
+the corresponding MSI-X vector. To disable interrupts for a
+specific event type, unmap it by writing a special NO_VECTOR
+value:
+
+/* Vector value used to disable MSI for queue */
+
+#define VIRTIO_MSI_NO_VECTOR 0xffff
+
+Reading these registers returns vector mapped to a given event,
+or NO_VECTOR if unmapped. All queue and configuration change
+events are unmapped by default.
+
+Note that mapping an event to vector might require allocating
+internal device resources, and might fail. Devices report such
+failures by returning the NO_VECTOR value when the relevant
+Vector field is read. After mapping an event to vector, the
+driver must verify success by reading the Vector field value: on
+success, the previously written value is returned, and on
+failure, NO_VECTOR is returned. If a mapping failure is detected,
+the driver can retry mapping with fewervectors, or disable MSI-X.
+
+ Virtqueue Configuration
+
+As a device can have zero or more virtqueues for bulk data
+transport (for example, the network driver has two), the driver
+needs to configure them as part of the device-specific
+configuration.
+
+This is done as follows, for each virtqueue a device has:
+
+ Write the virtqueue index (first queue is 0) to the Queue
+ Select field.
+
+ Read the virtqueue size from the Queue Size field, which is
+ always a power of 2. This controls how big the virtqueue is
+ (see below). If this field is 0, the virtqueue does not exist.
+
+ Allocate and zero virtqueue in contiguous physical memory, on a
+ 4096 byte alignment. Write the physical address, divided by
+ 4096 to the Queue Address field.[footnote:
+The 4096 is based on the x86 page size, but it's also large
+enough to ensure that the separate parts of the virtqueue are on
+separate cache lines.
+]
+
+ Optionally, if MSI-X capability is present and enabled on the
+ device, select a vector to use to request interrupts triggered
+ by virtqueue events. Write the MSI-X Table entry number
+ corresponding to this vector in Queue Vector field. Read the
+ Queue Vector field: on success, previously written value is
+ returned; on failure, NO_VECTOR value is returned.
+
+The Queue Size field controls the total number of bytes required
+for the virtqueue according to the following formula:
+
+#define ALIGN(x) (((x) + 4095) & ~4095)
+
+static inline unsigned vring_size(unsigned int qsz)
+
+{
+
+ return ALIGN(sizeof(struct vring_desc)*qsz + sizeof(u16)*(2
++ qsz))
+
+ + ALIGN(sizeof(struct vring_used_elem)*qsz);
+
+}
+
+This currently wastes some space with padding, but also allows
+future extensions. The virtqueue layout structure looks like this
+(qsz is the Queue Size field, which is a variable, so this code
+won't compile):
+
+struct vring {
+
+ /* The actual descriptors (16 bytes each) */
+
+ struct vring_desc desc[qsz];
+
+
+
+ /* A ring of available descriptor heads with free-running
+index. */
+
+ struct vring_avail avail;
+
+
+
+ // Padding to the next 4096 boundary.
+
+ char pad[];
+
+
+
+ // A ring of used descriptor heads with free-running index.
+
+ struct vring_used used;
+
+};
+
+ A Note on Virtqueue Endianness
+
+Note that the endian of these fields and everything else in the
+virtqueue is the native endian of the guest, not little-endian as
+PCI normally is. This makes for simpler guest code, and it is
+assumed that the host already has to be deeply aware of the guest
+endian so such an “endian-aware” device is not a significant
+issue.
+
+ Descriptor Table
+
+The descriptor table refers to the buffers the guest is using for
+the device. The addresses are physical addresses, and the buffers
+can be chained via the next field. Each descriptor describes a
+buffer which is read-only or write-only, but a chain of
+descriptors can contain both read-only and write-only buffers.
+
+No descriptor chain may be more than 2^32 bytes long in total.struct vring_desc {
+
+ /* Address (guest-physical). */
+
+ u64 addr;
+
+ /* Length. */
+
+ u32 len;
+
+/* This marks a buffer as continuing via the next field. */
+
+#define VRING_DESC_F_NEXT 1
+
+/* This marks a buffer as write-only (otherwise read-only). */
+
+#define VRING_DESC_F_WRITE 2
+
+/* This means the buffer contains a list of buffer descriptors.
+*/
+
+#define VRING_DESC_F_INDIRECT 4
+
+ /* The flags as indicated above. */
+
+ u16 flags;
+
+ /* Next field if flags & NEXT */
+
+ u16 next;
+
+};
+
+The number of descriptors in the table is specified by the Queue
+Size field for this virtqueue.
+
+ <sub:Indirect-Descriptors>Indirect Descriptors
+
+Some devices benefit by concurrently dispatching a large number
+of large requests. The VIRTIO_RING_F_INDIRECT_DESC feature can be
+used to allow this (see [cha:Reserved-Feature-Bits]). To increase
+ring capacity it is possible to store a table of indirect
+descriptors anywhere in memory, and insert a descriptor in main
+virtqueue (with flags&INDIRECT on) that refers to memory buffer
+containing this indirect descriptor table; fields addr and len
+refer to the indirect table address and length in bytes,
+respectively. The indirect table layout structure looks like this
+(len is the length of the descriptor that refers to this table,
+which is a variable, so this code won't compile):
+
+struct indirect_descriptor_table {
+
+ /* The actual descriptors (16 bytes each) */
+
+ struct vring_desc desc[len / 16];
+
+};
+
+The first indirect descriptor is located at start of the indirect
+descriptor table (index 0), additional indirect descriptors are
+chained by next field. An indirect descriptor without next field
+(with flags&NEXT off) signals the end of the indirect descriptor
+table, and transfers control back to the main virtqueue. An
+indirect descriptor can not refer to another indirect descriptor
+table (flags&INDIRECT must be off). A single indirect descriptor
+table can include both read-only and write-only descriptors;
+write-only flag (flags&WRITE) in the descriptor that refers to it
+is ignored.
+
+ Available Ring
+
+The available ring refers to what descriptors we are offering the
+device: it refers to the head of a descriptor chain. The “flags”
+field is currently 0 or 1: 1 indicating that we do not need an
+interrupt when the device consumes a descriptor from the
+available ring. Alternatively, the guest can ask the device to
+delay interrupts until an entry with an index specified by the “
+used_event” field is written in the used ring (equivalently,
+until the idx field in the used ring will reach the value
+used_event + 1). The method employed by the device is controlled
+by the VIRTIO_RING_F_EVENT_IDX feature bit (see [cha:Reserved-Feature-Bits]
+). This interrupt suppression is merely an optimization; it may
+not suppress interrupts entirely.
+
+The “idx” field indicates where we would put the next descriptor
+entry (modulo the ring size). This starts at 0, and increases.
+
+struct vring_avail {
+
+#define VRING_AVAIL_F_NO_INTERRUPT 1
+
+ u16 flags;
+
+ u16 idx;
+
+ u16 ring[qsz]; /* qsz is the Queue Size field read from device
+*/
+
+ u16 used_event;
+
+};
+
+ Used Ring
+
+The used ring is where the device returns buffers once it is done
+with them. The flags field can be used by the device to hint that
+no notification is necessary when the guest adds to the available
+ring. Alternatively, the “avail_event” field can be used by the
+device to hint that no notification is necessary until an entry
+with an index specified by the “avail_event” is written in the
+available ring (equivalently, until the idx field in the
+available ring will reach the value avail_event + 1). The method
+employed by the device is controlled by the guest through the
+VIRTIO_RING_F_EVENT_IDX feature bit (see [cha:Reserved-Feature-Bits]
+). [footnote:
+These fields are kept here because this is the only part of the
+virtqueue written by the device
+].
+
+Each entry in the ring is a pair: the head entry of the
+descriptor chain describing the buffer (this matches an entry
+placed in the available ring by the guest earlier), and the total
+of bytes written into the buffer. The latter is extremely useful
+for guests using untrusted buffers: if you do not know exactly
+how much has been written by the device, you usually have to zero
+the buffer to ensure no data leakage occurs.
+
+/* u32 is used here for ids for padding reasons. */
+
+struct vring_used_elem {
+
+ /* Index of start of used descriptor chain. */
+
+ u32 id;
+
+ /* Total length of the descriptor chain which was used
+(written to) */
+
+ u32 len;
+
+};
+
+
+
+struct vring_used {
+
+#define VRING_USED_F_NO_NOTIFY 1
+
+ u16 flags;
+
+ u16 idx;
+
+ struct vring_used_elem ring[qsz];
+
+ u16 avail_event;
+
+};
+
+ Helpers for Managing Virtqueues
+
+The Linux Kernel Source code contains the definitions above and
+helper routines in a more usable form, in
+include/linux/virtio_ring.h. This was explicitly licensed by IBM
+and Red Hat under the (3-clause) BSD license so that it can be
+freely used by all other projects, and is reproduced (with slight
+variation to remove Linux assumptions) in Appendix A.
+
+ Device Operation
+
+There are two parts to device operation: supplying new buffers to
+the device, and processing used buffers from the device. As an
+example, the virtio network device has two virtqueues: the
+transmit virtqueue and the receive virtqueue. The driver adds
+outgoing (read-only) packets to the transmit virtqueue, and then
+frees them after they are used. Similarly, incoming (write-only)
+buffers are added to the receive virtqueue, and processed after
+they are used.
+
+ Supplying Buffers to The Device
+
+Actual transfer of buffers from the guest OS to the device
+operates as follows:
+
+ Place the buffer(s) into free descriptor(s).
+
+ If there are no free descriptors, the guest may choose to
+ notify the device even if notifications are suppressed (to
+ reduce latency).[footnote:
+The Linux drivers do this only for read-only buffers: for
+write-only buffers, it is assumed that the driver is merely
+trying to keep the receive buffer ring full, and no notification
+of this expected condition is necessary.
+]
+
+ Place the id of the buffer in the next ring entry of the
+ available ring.
+
+ The steps (1) and (2) may be performed repeatedly if batching
+ is possible.
+
+ A memory barrier should be executed to ensure the device sees
+ the updated descriptor table and available ring before the next
+ step.
+
+ The available “idx” field should be increased by the number of
+ entries added to the available ring.
+
+ A memory barrier should be executed to ensure that we update
+ the idx field before checking for notification suppression.
+
+ If notifications are not suppressed, the device should be
+ notified of the new buffers.
+
+Note that the above code does not take precautions against the
+available ring buffer wrapping around: this is not possible since
+the ring buffer is the same size as the descriptor table, so step
+(1) will prevent such a condition.
+
+In addition, the maximum queue size is 32768 (it must be a power
+of 2 which fits in 16 bits), so the 16-bit “idx” value can always
+distinguish between a full and empty buffer.
+
+Here is a description of each stage in more detail.
+
+ Placing Buffers Into The Descriptor Table
+
+A buffer consists of zero or more read-only physically-contiguous
+elements followed by zero or more physically-contiguous
+write-only elements (it must have at least one element). This
+algorithm maps it into the descriptor table:
+
+ for each buffer element, b:
+
+ Get the next free descriptor table entry, d
+
+ Set d.addr to the physical address of the start of b
+
+ Set d.len to the length of b.
+
+ If b is write-only, set d.flags to VRING_DESC_F_WRITE,
+ otherwise 0.
+
+ If there is a buffer element after this:
+
+ Set d.next to the index of the next free descriptor element.
+
+ Set the VRING_DESC_F_NEXT bit in d.flags.
+
+In practice, the d.next fields are usually used to chain free
+descriptors, and a separate count kept to check there are enough
+free descriptors before beginning the mappings.
+
+ Updating The Available Ring
+
+The head of the buffer we mapped is the first d in the algorithm
+above. A naive implementation would do the following:
+
+avail->ring[avail->idx % qsz] = head;
+
+However, in general we can add many descriptors before we update
+the “idx” field (at which point they become visible to the
+device), so we keep a counter of how many we've added:
+
+avail->ring[(avail->idx + added++) % qsz] = head;
+
+ Updating The Index Field
+
+Once the idx field of the virtqueue is updated, the device will
+be able to access the descriptor entries we've created and the
+memory they refer to. This is why a memory barrier is generally
+used before the idx update, to ensure it sees the most up-to-date
+copy.
+
+The idx field always increments, and we let it wrap naturally at
+65536:
+
+avail->idx += added;
+
+ <sub:Notifying-The-Device>Notifying The Device
+
+Device notification occurs by writing the 16-bit virtqueue index
+of this virtqueue to the Queue Notify field of the virtio header
+in the first I/O region of the PCI device. This can be expensive,
+however, so the device can suppress such notifications if it
+doesn't need them. We have to be careful to expose the new idx
+value before checking the suppression flag: it's OK to notify
+gratuitously, but not to omit a required notification. So again,
+we use a memory barrier here before reading the flags or the
+avail_event field.
+
+If the VIRTIO_F_RING_EVENT_IDX feature is not negotiated, and if
+the VRING_USED_F_NOTIFY flag is not set, we go ahead and write to
+the PCI configuration space.
+
+If the VIRTIO_F_RING_EVENT_IDX feature is negotiated, we read the
+avail_event field in the available ring structure. If the
+available index crossed_the avail_event field value since the
+last notification, we go ahead and write to the PCI configuration
+space. The avail_event field wraps naturally at 65536 as well:
+
+(u16)(new_idx - avail_event - 1) < (u16)(new_idx - old_idx)
+
+ <sub:Receiving-Used-Buffers>Receiving Used Buffers From The
+ Device
+
+Once the device has used a buffer (read from or written to it, or
+parts of both, depending on the nature of the virtqueue and the
+device), it sends an interrupt, following an algorithm very
+similar to the algorithm used for the driver to send the device a
+buffer:
+
+ Write the head descriptor number to the next field in the used
+ ring.
+
+ Update the used ring idx.
+
+ Determine whether an interrupt is necessary:
+
+ If the VIRTIO_F_RING_EVENT_IDX feature is not negotiated: check
+ if f the VRING_AVAIL_F_NO_INTERRUPT flag is not set in avail-
+ >flags
+
+ If the VIRTIO_F_RING_EVENT_IDX feature is negotiated: check
+ whether the used index crossed the used_event field value
+ since the last update. The used_event field wraps naturally
+ at 65536 as well:(u16)(new_idx - used_event - 1) < (u16)(new_idx - old_idx)
+
+ If an interrupt is necessary:
+
+ If MSI-X capability is disabled:
+
+ Set the lower bit of the ISR Status field for the device.
+
+ Send the appropriate PCI interrupt for the device.
+
+ If MSI-X capability is enabled:
+
+ Request the appropriate MSI-X interrupt message for the
+ device, Queue Vector field sets the MSI-X Table entry
+ number.
+
+ If Queue Vector field value is NO_VECTOR, no interrupt
+ message is requested for this event.
+
+The guest interrupt handler should:
+
+ If MSI-X capability is disabled: read the ISR Status field,
+ which will reset it to zero. If the lower bit is zero, the
+ interrupt was not for this device. Otherwise, the guest driver
+ should look through the used rings of each virtqueue for the
+ device, to see if any progress has been made by the device
+ which requires servicing.
+
+ If MSI-X capability is enabled: look through the used rings of
+ each virtqueue mapped to the specific MSI-X vector for the
+ device, to see if any progress has been made by the device
+ which requires servicing.
+
+For each ring, guest should then disable interrupts by writing
+VRING_AVAIL_F_NO_INTERRUPT flag in avail structure, if required.
+It can then process used ring entries finally enabling interrupts
+by clearing the VRING_AVAIL_F_NO_INTERRUPT flag or updating the
+EVENT_IDX field in the available structure, Guest should then
+execute a memory barrier, and then recheck the ring empty
+condition. This is necessary to handle the case where, after the
+last check and before enabling interrupts, an interrupt has been
+suppressed by the device:
+
+vring_disable_interrupts(vq);
+
+for (;;) {
+
+ if (vq->last_seen_used != vring->used.idx) {
+
+ vring_enable_interrupts(vq);
+
+ mb();
+
+ if (vq->last_seen_used != vring->used.idx)
+
+ break;
+
+ }
+
+ struct vring_used_elem *e =
+vring.used->ring[vq->last_seen_used%vsz];
+
+ process_buffer(e);
+
+ vq->last_seen_used++;
+
+}
+
+ Dealing With Configuration Changes
+
+Some virtio PCI devices can change the device configuration
+state, as reflected in the virtio header in the PCI configuration
+space. In this case:
+
+ If MSI-X capability is disabled: an interrupt is delivered and
+ the second highest bit is set in the ISR Status field to
+ indicate that the driver should re-examine the configuration
+ space.Note that a single interrupt can indicate both that one
+ or more virtqueue has been used and that the configuration
+ space has changed: even if the config bit is set, virtqueues
+ must be scanned.
+
+ If MSI-X capability is enabled: an interrupt message is
+ requested. The Configuration Vector field sets the MSI-X Table
+ entry number to use. If Configuration Vector field value is
+ NO_VECTOR, no interrupt message is requested for this event.
+
+Creating New Device Types
+
+Various considerations are necessary when creating a new device
+type:
+
+ How Many Virtqueues?
+
+It is possible that a very simple device will operate entirely
+through its configuration space, but most will need at least one
+virtqueue in which it will place requests. A device with both
+input and output (eg. console and network devices described here)
+need two queues: one which the driver fills with buffers to
+receive input, and one which the driver places buffers to
+transmit output.
+
+ What Configuration Space Layout?
+
+Configuration space is generally used for rarely-changing or
+initialization-time parameters. But it is a limited resource, so
+it might be better to use a virtqueue to update configuration
+information (the network device does this for filtering,
+otherwise the table in the config space could potentially be very
+large).
+
+Note that this space is generally the guest's native endian,
+rather than PCI's little-endian.
+
+ What Device Number?
+
+Currently device numbers are assigned quite freely: a simple
+request mail to the author of this document or the Linux
+virtualization mailing list[footnote:
+
+https://lists.linux-foundation.org/mailman/listinfo/virtualization
+] will be sufficient to secure a unique one.
+
+Meanwhile for experimental drivers, use 65535 and work backwards.
+
+ How many MSI-X vectors?
+
+Using the optional MSI-X capability devices can speed up
+interrupt processing by removing the need to read ISR Status
+register by guest driver (which might be an expensive operation),
+reducing interrupt sharing between devices and queues within the
+device, and handling interrupts from multiple CPUs. However, some
+systems impose a limit (which might be as low as 256) on the
+total number of MSI-X vectors that can be allocated to all
+devices. Devices and/or device drivers should take this into
+account, limiting the number of vectors used unless the device is
+expected to cause a high volume of interrupts. Devices can
+control the number of vectors used by limiting the MSI-X Table
+Size or not presenting MSI-X capability in PCI configuration
+space. Drivers can control this by mapping events to as small
+number of vectors as possible, or disabling MSI-X capability
+altogether.
+
+ Message Framing
+
+The descriptors used for a buffer should not effect the semantics
+of the message, except for the total length of the buffer. For
+example, a network buffer consists of a 10 byte header followed
+by the network packet. Whether this is presented in the ring
+descriptor chain as (say) a 10 byte buffer and a 1514 byte
+buffer, or a single 1524 byte buffer, or even three buffers,
+should have no effect.
+
+In particular, no implementation should use the descriptor
+boundaries to determine the size of any header in a request.[footnote:
+The current qemu device implementations mistakenly insist that
+the first descriptor cover the header in these cases exactly, so
+a cautious driver should arrange it so.
+]
+
+ Device Improvements
+
+Any change to configuration space, or new virtqueues, or
+behavioural changes, should be indicated by negotiation of a new
+feature bit. This establishes clarity[footnote:
+Even if it does mean documenting design or implementation
+mistakes!
+] and avoids future expansion problems.
+
+Clusters of functionality which are always implemented together
+can use a single bit, but if one feature makes sense without the
+others they should not be gratuitously grouped together to
+conserve feature bits. We can always extend the spec when the
+first person needs more than 24 feature bits for their device.
+
+[LaTeX Command: printnomenclature]
+
+Appendix A: virtio_ring.h
+
+#ifndef VIRTIO_RING_H
+
+#define VIRTIO_RING_H
+
+/* An interface for efficient virtio implementation.
+
+ *
+
+ * This header is BSD licensed so anyone can use the definitions
+
+ * to implement compatible drivers/servers.
+
+ *
+
+ * Copyright 2007, 2009, IBM Corporation
+
+ * Copyright 2011, Red Hat, Inc
+
+ * All rights reserved.
+
+ *
+
+ * Redistribution and use in source and binary forms, with or
+without
+
+ * modification, are permitted provided that the following
+conditions
+
+ * are met:
+
+ * 1. Redistributions of source code must retain the above
+copyright
+
+ * notice, this list of conditions and the following
+disclaimer.
+
+ * 2. Redistributions in binary form must reproduce the above
+copyright
+
+ * notice, this list of conditions and the following
+disclaimer in the
+
+ * documentation and/or other materials provided with the
+distribution.
+
+ * 3. Neither the name of IBM nor the names of its contributors
+
+ * may be used to endorse or promote products derived from
+this software
+
+ * without specific prior written permission.
+
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS ``AS IS'' AND
+
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE
+
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE
+
+ * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE
+LIABLE
+
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL
+
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS
+
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION)
+
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT
+
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY
+
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF
+
+ * SUCH DAMAGE.
+
+ */
+
+
+
+/* This marks a buffer as continuing via the next field. */
+
+#define VRING_DESC_F_NEXT 1
+
+/* This marks a buffer as write-only (otherwise read-only). */
+
+#define VRING_DESC_F_WRITE 2
+
+
+
+/* The Host uses this in used->flags to advise the Guest: don't
+kick me
+
+ * when you add a buffer. It's unreliable, so it's simply an
+
+ * optimization. Guest will still kick if it's out of buffers.
+*/
+
+#define VRING_USED_F_NO_NOTIFY 1
+
+/* The Guest uses this in avail->flags to advise the Host: don't
+
+ * interrupt me when you consume a buffer. It's unreliable, so
+it's
+
+ * simply an optimization. */
+
+#define VRING_AVAIL_F_NO_INTERRUPT 1
+
+
+
+/* Virtio ring descriptors: 16 bytes.
+
+ * These can chain together via "next". */
+
+struct vring_desc {
+
+ /* Address (guest-physical). */
+
+ uint64_t addr;
+
+ /* Length. */
+
+ uint32_t len;
+
+ /* The flags as indicated above. */
+
+ uint16_t flags;
+
+ /* We chain unused descriptors via this, too */
+
+ uint16_t next;
+
+};
+
+
+
+struct vring_avail {
+
+ uint16_t flags;
+
+ uint16_t idx;
+
+ uint16_t ring[];
+
+ uint16_t used_event;
+
+};
+
+
+
+/* u32 is used here for ids for padding reasons. */
+
+struct vring_used_elem {
+
+ /* Index of start of used descriptor chain. */
+
+ uint32_t id;
+
+ /* Total length of the descriptor chain which was written
+to. */
+
+ uint32_t len;
+
+};
+
+
+
+struct vring_used {
+
+ uint16_t flags;
+
+ uint16_t idx;
+
+ struct vring_used_elem ring[];
+
+ uint16_t avail_event;
+
+};
+
+
+
+struct vring {
+
+ unsigned int num;
+
+
+
+ struct vring_desc *desc;
+
+ struct vring_avail *avail;
+
+ struct vring_used *used;
+
+};
+
+
+
+/* The standard layout for the ring is a continuous chunk of
+memory which
+
+ * looks like this. We assume num is a power of 2.
+
+ *
+
+ * struct vring {
+
+ * // The actual descriptors (16 bytes each)
+
+ * struct vring_desc desc[num];
+
+ *
+
+ * // A ring of available descriptor heads with free-running
+index.
+
+ * __u16 avail_flags;
+
+ * __u16 avail_idx;
+
+ * __u16 available[num];
+
+ *
+
+ * // Padding to the next align boundary.
+
+ * char pad[];
+
+ *
+
+ * // A ring of used descriptor heads with free-running
+index.
+
+ * __u16 used_flags;
+
+ * __u16 EVENT_IDX;
+
+ * struct vring_used_elem used[num];
+
+ * };
+
+ * Note: for virtio PCI, align is 4096.
+
+ */
+
+static inline void vring_init(struct vring *vr, unsigned int num,
+void *p,
+
+ unsigned long align)
+
+{
+
+ vr->num = num;
+
+ vr->desc = p;
+
+ vr->avail = p + num*sizeof(struct vring_desc);
+
+ vr->used = (void *)(((unsigned long)&vr->avail->ring[num]
+
+ + align-1)
+
+ & ~(align - 1));
+
+}
+
+
+
+static inline unsigned vring_size(unsigned int num, unsigned long
+align)
+
+{
+
+ return ((sizeof(struct vring_desc)*num +
+sizeof(uint16_t)*(2+num)
+
+ + align - 1) & ~(align - 1))
+
+ + sizeof(uint16_t)*3 + sizeof(struct
+vring_used_elem)*num;
+
+}
+
+
+
+static inline int vring_need_event(uint16_t event_idx, uint16_t
+new_idx, uint16_t old_idx)
+
+{
+
+ return (uint16_t)(new_idx - event_idx - 1) <
+(uint16_t)(new_idx - old_idx);
+
+}
+
+#endif /* VIRTIO_RING_H */
+
+<cha:Reserved-Feature-Bits>Appendix B: Reserved Feature Bits
+
+Currently there are five device-independent feature bits defined:
+
+ VIRTIO_F_NOTIFY_ON_EMPTY (24) Negotiating this feature
+ indicates that the driver wants an interrupt if the device runs
+ out of available descriptors on a virtqueue, even though
+ interrupts are suppressed using the VRING_AVAIL_F_NO_INTERRUPT
+ flag or the used_event field. An example of this is the
+ networking driver: it doesn't need to know every time a packet
+ is transmitted, but it does need to free the transmitted
+ packets a finite time after they are transmitted. It can avoid
+ using a timer if the device interrupts it when all the packets
+ are transmitted.
+
+ VIRTIO_F_RING_INDIRECT_DESC (28) Negotiating this feature
+ indicates that the driver can use descriptors with the
+ VRING_DESC_F_INDIRECT flag set, as described in [sub:Indirect-Descriptors]
+ .
+
+ VIRTIO_F_RING_EVENT_IDX(29) This feature enables the used_event
+ and the avail_event fields. If set, it indicates that the
+ device should ignore the flags field in the available ring
+ structure. Instead, the used_event field in this structure is
+ used by guest to suppress device interrupts. Further, the
+ driver should ignore the flags field in the used ring
+ structure. Instead, the avail_event field in this structure is
+ used by the device to suppress notifications. If unset, the
+ driver should ignore the used_event field; the device should
+ ignore the avail_event field; the flags field is used
+
+ VIRTIO_F_BAD_FEATURE(30) This feature should never be
+ negotiated by the guest; doing so is an indication that the
+ guest is faulty[footnote:
+An experimental virtio PCI driver contained in Linux version
+2.6.25 had this problem, and this feature bit can be used to
+detect it.
+]
+
+ VIRTIO_F_FEATURES_HIGH(31) This feature indicates that the
+ device supports feature bits 32:63. If unset, feature bits
+ 32:63 are unset.
+
+Appendix C: Network Device
+
+The virtio network device is a virtual ethernet card, and is the
+most complex of the devices supported so far by virtio. It has
+enhanced rapidly and demonstrates clearly how support for new
+features should be added to an existing device. Empty buffers are
+placed in one virtqueue for receiving packets, and outgoing
+packets are enqueued into another for transmission in that order.
+A third command queue is used to control advanced filtering
+features.
+
+ Configuration
+
+ Subsystem Device ID 1
+
+ Virtqueues 0:receiveq. 1:transmitq. 2:controlq[footnote:
+Only if VIRTIO_NET_F_CTRL_VQ set
+]
+
+ Feature bits
+
+ VIRTIO_NET_F_CSUM (0) Device handles packets with partial
+ checksum
+
+ VIRTIO_NET_F_GUEST_CSUM (1) Guest handles packets with partial
+ checksum
+
+ VIRTIO_NET_F_MAC (5) Device has given MAC address.
+
+ VIRTIO_NET_F_GSO (6) (Deprecated) device handles packets with
+ any GSO type.[footnote:
+It was supposed to indicate segmentation offload support, but
+upon further investigation it became clear that multiple bits
+were required.
+]
+
+ VIRTIO_NET_F_GUEST_TSO4 (7) Guest can receive TSOv4.
+
+ VIRTIO_NET_F_GUEST_TSO6 (8) Guest can receive TSOv6.
+
+ VIRTIO_NET_F_GUEST_ECN (9) Guest can receive TSO with ECN.
+
+ VIRTIO_NET_F_GUEST_UFO (10) Guest can receive UFO.
+
+ VIRTIO_NET_F_HOST_TSO4 (11) Device can receive TSOv4.
+
+ VIRTIO_NET_F_HOST_TSO6 (12) Device can receive TSOv6.
+
+ VIRTIO_NET_F_HOST_ECN (13) Device can receive TSO with ECN.
+
+ VIRTIO_NET_F_HOST_UFO (14) Device can receive UFO.
+
+ VIRTIO_NET_F_MRG_RXBUF (15) Guest can merge receive buffers.
+
+ VIRTIO_NET_F_STATUS (16) Configuration status field is
+ available.
+
+ VIRTIO_NET_F_CTRL_VQ (17) Control channel is available.
+
+ VIRTIO_NET_F_CTRL_RX (18) Control channel RX mode support.
+
+ VIRTIO_NET_F_CTRL_VLAN (19) Control channel VLAN filtering.
+
+ Device configuration layout Two configuration fields are
+ currently defined. The mac address field always exists (though
+ is only valid if VIRTIO_NET_F_MAC is set), and the status field
+ only exists if VIRTIO_NET_F_STATUS is set. Only one bit is
+ currently defined for the status field: VIRTIO_NET_S_LINK_UP. #define VIRTIO_NET_S_LINK_UP 1
+
+
+
+struct virtio_net_config {
+
+ u8 mac[6];
+
+ u16 status;
+
+};
+
+ Device Initialization
+
+ The initialization routine should identify the receive and
+ transmission virtqueues.
+
+ If the VIRTIO_NET_F_MAC feature bit is set, the configuration
+ space “mac” entry indicates the “physical” address of the the
+ network card, otherwise a private MAC address should be
+ assigned. All guests are expected to negotiate this feature if
+ it is set.
+
+ If the VIRTIO_NET_F_CTRL_VQ feature bit is negotiated, identify
+ the control virtqueue.
+
+ If the VIRTIO_NET_F_STATUS feature bit is negotiated, the link
+ status can be read from the bottom bit of the “status” config
+ field. Otherwise, the link should be assumed active.
+
+ The receive virtqueue should be filled with receive buffers.
+ This is described in detail below in “Setting Up Receive
+ Buffers”.
+
+ A driver can indicate that it will generate checksumless
+ packets by negotating the VIRTIO_NET_F_CSUM feature. This “
+ checksum offload” is a common feature on modern network cards.
+
+ If that feature is negotiated, a driver can use TCP or UDP
+ segmentation offload by negotiating the VIRTIO_NET_F_HOST_TSO4
+ (IPv4 TCP), VIRTIO_NET_F_HOST_TSO6 (IPv6 TCP) and
+ VIRTIO_NET_F_HOST_UFO (UDP fragmentation) features. It should
+ not send TCP packets requiring segmentation offload which have
+ the Explicit Congestion Notification bit set, unless the
+ VIRTIO_NET_F_HOST_ECN feature is negotiated.[footnote:
+This is a common restriction in real, older network cards.
+]
+
+ The converse features are also available: a driver can save the
+ virtual device some work by negotiating these features.[footnote:
+For example, a network packet transported between two guests on
+the same system may not require checksumming at all, nor
+segmentation, if both guests are amenable.
+] The VIRTIO_NET_F_GUEST_CSUM feature indicates that partially
+ checksummed packets can be received, and if it can do that then
+ the VIRTIO_NET_F_GUEST_TSO4, VIRTIO_NET_F_GUEST_TSO6,
+ VIRTIO_NET_F_GUEST_UFO and VIRTIO_NET_F_GUEST_ECN are the input
+ equivalents of the features described above. See “Receiving
+ Packets” below.
+
+ Device Operation
+
+Packets are transmitted by placing them in the transmitq, and
+buffers for incoming packets are placed in the receiveq. In each
+case, the packet itself is preceeded by a header:
+
+struct virtio_net_hdr {
+
+#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1
+
+ u8 flags;
+
+#define VIRTIO_NET_HDR_GSO_NONE 0
+
+#define VIRTIO_NET_HDR_GSO_TCPV4 1
+
+#define VIRTIO_NET_HDR_GSO_UDP 3
+
+#define VIRTIO_NET_HDR_GSO_TCPV6 4
+
+#define VIRTIO_NET_HDR_GSO_ECN 0x80
+
+ u8 gso_type;
+
+ u16 hdr_len;
+
+ u16 gso_size;
+
+ u16 csum_start;
+
+ u16 csum_offset;
+
+/* Only if VIRTIO_NET_F_MRG_RXBUF: */
+
+ u16 num_buffers
+
+};
+
+The controlq is used to control device features such as
+filtering.
+
+ Packet Transmission
+
+Transmitting a single packet is simple, but varies depending on
+the different features the driver negotiated.
+
+ If the driver negotiated VIRTIO_NET_F_CSUM, and the packet has
+ not been fully checksummed, then the virtio_net_hdr's fields
+ are set as follows. Otherwise, the packet must be fully
+ checksummed, and flags is zero.
+
+ flags has the VIRTIO_NET_HDR_F_NEEDS_CSUM set,
+
+ <ite:csum_start-is-set>csum_start is set to the offset within
+ the packet to begin checksumming, and
+
+ csum_offset indicates how many bytes after the csum_start the
+ new (16 bit ones' complement) checksum should be placed.[footnote:
+For example, consider a partially checksummed TCP (IPv4) packet.
+It will have a 14 byte ethernet header and 20 byte IP header
+followed by the TCP header (with the TCP checksum field 16 bytes
+into that header). csum_start will be 14+20 = 34 (the TCP
+checksum includes the header), and csum_offset will be 16. The
+value in the TCP checksum field will be the sum of the TCP pseudo
+header, so that replacing it by the ones' complement checksum of
+the TCP header and body will give the correct result.
+]
+
+ <enu:If-the-driver>If the driver negotiated
+ VIRTIO_NET_F_HOST_TSO4, TSO6 or UFO, and the packet requires
+ TCP segmentation or UDP fragmentation, then the “gso_type”
+ field is set to VIRTIO_NET_HDR_GSO_TCPV4, TCPV6 or UDP.
+ (Otherwise, it is set to VIRTIO_NET_HDR_GSO_NONE). In this
+ case, packets larger than 1514 bytes can be transmitted: the
+ metadata indicates how to replicate the packet header to cut it
+ into smaller packets. The other gso fields are set:
+
+ hdr_len is a hint to the device as to how much of the header
+ needs to be kept to copy into each packet, usually set to the
+ length of the headers, including the transport header.[footnote:
+Due to various bugs in implementations, this field is not useful
+as a guarantee of the transport header size.
+]
+
+ gso_size is the size of the packet beyond that header (ie.
+ MSS).
+
+ If the driver negotiated the VIRTIO_NET_F_HOST_ECN feature, the
+ VIRTIO_NET_HDR_GSO_ECN bit may be set in “gso_type” as well,
+ indicating that the TCP packet has the ECN bit set.[footnote:
+This case is not handled by some older hardware, so is called out
+specifically in the protocol.
+]
+
+ If the driver negotiated the VIRTIO_NET_F_MRG_RXBUF feature,
+ the num_buffers field is set to zero.
+
+ The header and packet are added as one output buffer to the
+ transmitq, and the device is notified of the new entry (see [sub:Notifying-The-Device]
+ ).[footnote:
+Note that the header will be two bytes longer for the
+VIRTIO_NET_F_MRG_RXBUF case.
+]
+
+ Packet Transmission Interrupt
+
+Often a driver will suppress transmission interrupts using the
+VRING_AVAIL_F_NO_INTERRUPT flag (see [sub:Receiving-Used-Buffers]
+) and check for used packets in the transmit path of following
+packets. However, it will still receive interrupts if the
+VIRTIO_F_NOTIFY_ON_EMPTY feature is negotiated, indicating that
+the transmission queue is completely emptied.
+
+The normal behavior in this interrupt handler is to retrieve and
+new descriptors from the used ring and free the corresponding
+headers and packets.
+
+ Setting Up Receive Buffers
+
+It is generally a good idea to keep the receive virtqueue as
+fully populated as possible: if it runs out, network performance
+will suffer.
+
+If the VIRTIO_NET_F_GUEST_TSO4, VIRTIO_NET_F_GUEST_TSO6 or
+VIRTIO_NET_F_GUEST_UFO features are used, the Guest will need to
+accept packets of up to 65550 bytes long (the maximum size of a
+TCP or UDP packet, plus the 14 byte ethernet header), otherwise
+1514 bytes. So unless VIRTIO_NET_F_MRG_RXBUF is negotiated, every
+buffer in the receive queue needs to be at least this length [footnote:
+Obviously each one can be split across multiple descriptor
+elements.
+].
+
+If VIRTIO_NET_F_MRG_RXBUF is negotiated, each buffer must be at
+least the size of the struct virtio_net_hdr.
+
+ Packet Receive Interrupt
+
+When a packet is copied into a buffer in the receiveq, the
+optimal path is to disable further interrupts for the receiveq
+(see [sub:Receiving-Used-Buffers]) and process packets until no
+more are found, then re-enable them.
+
+Processing packet involves:
+
+ If the driver negotiated the VIRTIO_NET_F_MRG_RXBUF feature,
+ then the “num_buffers” field indicates how many descriptors
+ this packet is spread over (including this one). This allows
+ receipt of large packets without having to allocate large
+ buffers. In this case, there will be at least “num_buffers” in
+ the used ring, and they should be chained together to form a
+ single packet. The other buffers will not begin with a struct
+ virtio_net_hdr.
+
+ If the VIRTIO_NET_F_MRG_RXBUF feature was not negotiated, or
+ the “num_buffers” field is one, then the entire packet will be
+ contained within this buffer, immediately following the struct
+ virtio_net_hdr.
+
+ If the VIRTIO_NET_F_GUEST_CSUM feature was negotiated, the
+ VIRTIO_NET_HDR_F_NEEDS_CSUM bit in the “flags” field may be
+ set: if so, the checksum on the packet is incomplete and the “
+ csum_start” and “csum_offset” fields indicate how to calculate
+ it (see [ite:csum_start-is-set]).
+
+ If the VIRTIO_NET_F_GUEST_TSO4, TSO6 or UFO options were
+ negotiated, then the “gso_type” may be something other than
+ VIRTIO_NET_HDR_GSO_NONE, and the “gso_size” field indicates the
+ desired MSS (see [enu:If-the-driver]).Control Virtqueue
+
+The driver uses the control virtqueue (if VIRTIO_NET_F_VTRL_VQ is
+negotiated) to send commands to manipulate various features of
+the device which would not easily map into the configuration
+space.
+
+All commands are of the following form:
+
+struct virtio_net_ctrl {
+
+ u8 class;
+
+ u8 command;
+
+ u8 command-specific-data[];
+
+ u8 ack;
+
+};
+
+
+
+/* ack values */
+
+#define VIRTIO_NET_OK 0
+
+#define VIRTIO_NET_ERR 1
+
+The class, command and command-specific-data are set by the
+driver, and the device sets the ack byte. There is little it can
+do except issue a diagnostic if the ack byte is not
+VIRTIO_NET_OK.
+
+ Packet Receive Filtering
+
+If the VIRTIO_NET_F_CTRL_RX feature is negotiated, the driver can
+send control commands for promiscuous mode, multicast receiving,
+and filtering of MAC addresses.
+
+Note that in general, these commands are best-effort: unwanted
+packets may still arrive.
+
+ Setting Promiscuous Mode
+
+#define VIRTIO_NET_CTRL_RX 0
+
+ #define VIRTIO_NET_CTRL_RX_PROMISC 0
+
+ #define VIRTIO_NET_CTRL_RX_ALLMULTI 1
+
+The class VIRTIO_NET_CTRL_RX has two commands:
+VIRTIO_NET_CTRL_RX_PROMISC turns promiscuous mode on and off, and
+VIRTIO_NET_CTRL_RX_ALLMULTI turns all-multicast receive on and
+off. The command-specific-data is one byte containing 0 (off) or
+1 (on).
+
+ Setting MAC Address Filtering
+
+struct virtio_net_ctrl_mac {
+
+ u32 entries;
+
+ u8 macs[entries][ETH_ALEN];
+
+};
+
+
+
+#define VIRTIO_NET_CTRL_MAC 1
+
+ #define VIRTIO_NET_CTRL_MAC_TABLE_SET 0
+
+The device can filter incoming packets by any number of
+destination MAC addresses.[footnote:
+Since there are no guarentees, it can use a hash filter
+orsilently switch to allmulti or promiscuous mode if it is given
+too many addresses.
+] This table is set using the class VIRTIO_NET_CTRL_MAC and the
+command VIRTIO_NET_CTRL_MAC_TABLE_SET. The command-specific-data
+is two variable length tables of 6-byte MAC addresses. The first
+table contains unicast addresses, and the second contains
+multicast addresses.
+
+ VLAN Filtering
+
+If the driver negotiates the VIRTION_NET_F_CTRL_VLAN feature, it
+can control a VLAN filter table in the device.
+
+#define VIRTIO_NET_CTRL_VLAN 2
+
+ #define VIRTIO_NET_CTRL_VLAN_ADD 0
+
+ #define VIRTIO_NET_CTRL_VLAN_DEL 1
+
+Both the VIRTIO_NET_CTRL_VLAN_ADD and VIRTIO_NET_CTRL_VLAN_DEL
+command take a 16-bit VLAN id as the command-specific-data.
+
+Appendix D: Block Device
+
+The virtio block device is a simple virtual block device (ie.
+disk). Read and write requests (and other exotic requests) are
+placed in the queue, and serviced (probably out of order) by the
+device except where noted.
+
+ Configuration
+
+ Subsystem Device ID 2
+
+ Virtqueues 0:requestq.
+
+ Feature bits
+
+ VIRTIO_BLK_F_BARRIER (0) Host supports request barriers.
+
+ VIRTIO_BLK_F_SIZE_MAX (1) Maximum size of any single segment is
+ in “size_max”.
+
+ VIRTIO_BLK_F_SEG_MAX (2) Maximum number of segments in a
+ request is in “seg_max”.
+
+ VIRTIO_BLK_F_GEOMETRY (4) Disk-style geometry specified in “
+ geometry”.
+
+ VIRTIO_BLK_F_RO (5) Device is read-only.
+
+ VIRTIO_BLK_F_BLK_SIZE (6) Block size of disk is in “blk_size”.
+
+ VIRTIO_BLK_F_SCSI (7) Device supports scsi packet commands.
+
+ VIRTIO_BLK_F_FLUSH (9) Cache flush command support.
+
+
+
+ Device configuration layout The capacity of the device
+ (expressed in 512-byte sectors) is always present. The
+ availability of the others all depend on various feature bits
+ as indicated above. struct virtio_blk_config {
+
+ u64 capacity;
+
+ u32 size_max;
+
+ u32 seg_max;
+
+ struct virtio_blk_geometry {
+
+ u16 cylinders;
+
+ u8 heads;
+
+ u8 sectors;
+
+ } geometry;
+
+ u32 blk_size;
+
+
+
+};
+
+ Device Initialization
+
+ The device size should be read from the “capacity”
+ configuration field. No requests should be submitted which goes
+ beyond this limit.
+
+ If the VIRTIO_BLK_F_BLK_SIZE feature is negotiated, the
+ blk_size field can be read to determine the optimal sector size
+ for the driver to use. This does not effect the units used in
+ the protocol (always 512 bytes), but awareness of the correct
+ value can effect performance.
+
+ If the VIRTIO_BLK_F_RO feature is set by the device, any write
+ requests will fail.
+
+
+
+ Device Operation
+
+The driver queues requests to the virtqueue, and they are used by
+the device (not necessarily in order). Each request is of form:
+
+struct virtio_blk_req {
+
+
+
+ u32 type;
+
+ u32 ioprio;
+
+ u64 sector;
+
+ char data[][512];
+
+ u8 status;
+
+};
+
+If the device has VIRTIO_BLK_F_SCSI feature, it can also support
+scsi packet command requests, each of these requests is of form:struct virtio_scsi_pc_req {
+
+ u32 type;
+
+ u32 ioprio;
+
+ u64 sector;
+
+ char cmd[];
+
+ char data[][512];
+
+#define SCSI_SENSE_BUFFERSIZE 96
+
+ u8 sense[SCSI_SENSE_BUFFERSIZE];
+
+ u32 errors;
+
+ u32 data_len;
+
+ u32 sense_len;
+
+ u32 residual;
+
+ u8 status;
+
+};
+
+The type of the request is either a read (VIRTIO_BLK_T_IN), a
+write (VIRTIO_BLK_T_OUT), a scsi packet command
+(VIRTIO_BLK_T_SCSI_CMD or VIRTIO_BLK_T_SCSI_CMD_OUT[footnote:
+the SCSI_CMD and SCSI_CMD_OUT types are equivalent, the device
+does not distinguish between them
+]) or a flush (VIRTIO_BLK_T_FLUSH or VIRTIO_BLK_T_FLUSH_OUT[footnote:
+the FLUSH and FLUSH_OUT types are equivalent, the device does not
+distinguish between them
+]). If the device has VIRTIO_BLK_F_BARRIER feature the high bit
+(VIRTIO_BLK_T_BARRIER) indicates that this request acts as a
+barrier and that all preceeding requests must be complete before
+this one, and all following requests must not be started until
+this is complete. Note that a barrier does not flush caches in
+the underlying backend device in host, and thus does not serve as
+data consistency guarantee. Driver must use FLUSH request to
+flush the host cache.
+
+#define VIRTIO_BLK_T_IN 0
+
+#define VIRTIO_BLK_T_OUT 1
+
+#define VIRTIO_BLK_T_SCSI_CMD 2
+
+#define VIRTIO_BLK_T_SCSI_CMD_OUT 3
+
+#define VIRTIO_BLK_T_FLUSH 4
+
+#define VIRTIO_BLK_T_FLUSH_OUT 5
+
+#define VIRTIO_BLK_T_BARRIER 0x80000000
+
+The ioprio field is a hint about the relative priorities of
+requests to the device: higher numbers indicate more important
+requests.
+
+The sector number indicates the offset (multiplied by 512) where
+the read or write is to occur. This field is unused and set to 0
+for scsi packet commands and for flush commands.
+
+The cmd field is only present for scsi packet command requests,
+and indicates the command to perform. This field must reside in a
+single, separate read-only buffer; command length can be derived
+from the length of this buffer.
+
+Note that these first three (four for scsi packet commands)
+fields are always read-only: the data field is either read-only
+or write-only, depending on the request. The size of the read or
+write can be derived from the total size of the request buffers.
+
+The sense field is only present for scsi packet command requests,
+and indicates the buffer for scsi sense data.
+
+The data_len field is only present for scsi packet command
+requests, this field is deprecated, and should be ignored by the
+driver. Historically, devices copied data length there.
+
+The sense_len field is only present for scsi packet command
+requests and indicates the number of bytes actually written to
+the sense buffer.
+
+The residual field is only present for scsi packet command
+requests and indicates the residual size, calculated as data
+length - number of bytes actually transferred.
+
+The final status byte is written by the device: either
+VIRTIO_BLK_S_OK for success, VIRTIO_BLK_S_IOERR for host or guest
+error or VIRTIO_BLK_S_UNSUPP for a request unsupported by host:#define VIRTIO_BLK_S_OK 0
+
+#define VIRTIO_BLK_S_IOERR 1
+
+#define VIRTIO_BLK_S_UNSUPP 2
+
+Historically, devices assumed that the fields type, ioprio and
+sector reside in a single, separate read-only buffer; the fields
+errors, data_len, sense_len and residual reside in a single,
+separate write-only buffer; the sense field in a separate
+write-only buffer of size 96 bytes, by itself; the fields errors,
+data_len, sense_len and residual in a single write-only buffer;
+and the status field is a separate read-only buffer of size 1
+byte, by itself.
+
+Appendix E: Console Device
+
+The virtio console device is a simple device for data input and
+output. A device may have one or more ports. Each port has a pair
+of input and output virtqueues. Moreover, a device has a pair of
+control IO virtqueues. The control virtqueues are used to
+communicate information between the device and the driver about
+ports being opened and closed on either side of the connection,
+indication from the host about whether a particular port is a
+console port, adding new ports, port hot-plug/unplug, etc., and
+indication from the guest about whether a port or a device was
+successfully added, port open/close, etc.. For data IO, one or
+more empty buffers are placed in the receive queue for incoming
+data and outgoing characters are placed in the transmit queue.
+
+ Configuration
+
+ Subsystem Device ID 3
+
+ Virtqueues 0:receiveq(port0). 1:transmitq(port0), 2:control
+ receiveq[footnote:
+Ports 2 onwards only if VIRTIO_CONSOLE_F_MULTIPORT is set
+], 3:control transmitq, 4:receiveq(port1), 5:transmitq(port1),
+ ...
+
+ Feature bits
+
+ VIRTIO_CONSOLE_F_SIZE (0) Configuration cols and rows fields
+ are valid.
+
+ VIRTIO_CONSOLE_F_MULTIPORT(1) Device has support for multiple
+ ports; configuration fields nr_ports and max_nr_ports are
+ valid and control virtqueues will be used.
+
+ Device configuration layout The size of the console is supplied
+ in the configuration space if the VIRTIO_CONSOLE_F_SIZE feature
+ is set. Furthermore, if the VIRTIO_CONSOLE_F_MULTIPORT feature
+ is set, the maximum number of ports supported by the device can
+ be fetched.struct virtio_console_config {
+
+ u16 cols;
+
+ u16 rows;
+
+
+
+ u32 max_nr_ports;
+
+};
+
+ Device Initialization
+
+ If the VIRTIO_CONSOLE_F_SIZE feature is negotiated, the driver
+ can read the console dimensions from the configuration fields.
+
+ If the VIRTIO_CONSOLE_F_MULTIPORT feature is negotiated, the
+ driver can spawn multiple ports, not all of which may be
+ attached to a console. Some could be generic ports. In this
+ case, the control virtqueues are enabled and according to the
+ max_nr_ports configuration-space value, the appropriate number
+ of virtqueues are created. A control message indicating the
+ driver is ready is sent to the host. The host can then send
+ control messages for adding new ports to the device. After
+ creating and initializing each port, a
+ VIRTIO_CONSOLE_PORT_READY control message is sent to the host
+ for that port so the host can let us know of any additional
+ configuration options set for that port.
+
+ The receiveq for each port is populated with one or more
+ receive buffers.
+
+ Device Operation
+
+ For output, a buffer containing the characters is placed in the
+ port's transmitq.[footnote:
+Because this is high importance and low bandwidth, the current
+Linux implementation polls for the buffer to be used, rather than
+waiting for an interrupt, simplifying the implementation
+significantly. However, for generic serial ports with the
+O_NONBLOCK flag set, the polling limitation is relaxed and the
+consumed buffers are freed upon the next write or poll call or
+when a port is closed or hot-unplugged.
+]
+
+ When a buffer is used in the receiveq (signalled by an
+ interrupt), the contents is the input to the port associated
+ with the virtqueue for which the notification was received.
+
+ If the driver negotiated the VIRTIO_CONSOLE_F_SIZE feature, a
+ configuration change interrupt may occur. The updated size can
+ be read from the configuration fields.
+
+ If the driver negotiated the VIRTIO_CONSOLE_F_MULTIPORT
+ feature, active ports are announced by the host using the
+ VIRTIO_CONSOLE_PORT_ADD control message. The same message is
+ used for port hot-plug as well.
+
+ If the host specified a port `name', a sysfs attribute is
+ created with the name filled in, so that udev rules can be
+ written that can create a symlink from the port's name to the
+ char device for port discovery by applications in the guest.
+
+ Changes to ports' state are effected by control messages.
+ Appropriate action is taken on the port indicated in the
+ control message. The layout of the structure of the control
+ buffer and the events associated are:struct virtio_console_control {
+
+ uint32_t id; /* Port number */
+
+ uint16_t event; /* The kind of control event */
+
+ uint16_t value; /* Extra information for the event */
+
+};
+
+
+
+/* Some events for the internal messages (control packets) */
+
+
+
+#define VIRTIO_CONSOLE_DEVICE_READY 0
+
+#define VIRTIO_CONSOLE_PORT_ADD 1
+
+#define VIRTIO_CONSOLE_PORT_REMOVE 2
+
+#define VIRTIO_CONSOLE_PORT_READY 3
+
+#define VIRTIO_CONSOLE_CONSOLE_PORT 4
+
+#define VIRTIO_CONSOLE_RESIZE 5
+
+#define VIRTIO_CONSOLE_PORT_OPEN 6
+
+#define VIRTIO_CONSOLE_PORT_NAME 7
+
+Appendix F: Entropy Device
+
+The virtio entropy device supplies high-quality randomness for
+guest use.
+
+ Configuration
+
+ Subsystem Device ID 4
+
+ Virtqueues 0:requestq.
+
+ Feature bits None currently defined
+
+ Device configuration layout None currently defined.
+
+ Device Initialization
+
+ The virtqueue is initialized
+
+ Device Operation
+
+When the driver requires random bytes, it places the descriptor
+of one or more buffers in the queue. It will be completely filled
+by random data by the device.
+
+Appendix G: Memory Balloon Device
+
+The virtio memory balloon device is a primitive device for
+managing guest memory: the device asks for a certain amount of
+memory, and the guest supplies it (or withdraws it, if the device
+has more than it asks for). This allows the guest to adapt to
+changes in allowance of underlying physical memory. If the
+feature is negotiated, the device can also be used to communicate
+guest memory statistics to the host.
+
+ Configuration
+
+ Subsystem Device ID 5
+
+ Virtqueues 0:inflateq. 1:deflateq. 2:statsq.[footnote:
+Only if VIRTIO_BALLON_F_STATS_VQ set
+]
+
+ Feature bits
+
+ VIRTIO_BALLOON_F_MUST_TELL_HOST (0) Host must be told before
+ pages from the balloon are used.
+
+ VIRTIO_BALLOON_F_STATS_VQ (1) A virtqueue for reporting guest
+ memory statistics is present.
+
+ Device configuration layout Both fields of this configuration
+ are always available. Note that they are little endian, despite
+ convention that device fields are guest endian:struct virtio_balloon_config {
+
+ u32 num_pages;
+
+ u32 actual;
+
+};
+
+ Device Initialization
+
+ The inflate and deflate virtqueues are identified.
+
+ If the VIRTIO_BALLOON_F_STATS_VQ feature bit is negotiated:
+
+ Identify the stats virtqueue.
+
+ Add one empty buffer to the stats virtqueue and notify the
+ host.
+
+Device operation begins immediately.
+
+ Device Operation
+
+ Memory Ballooning The device is driven by the receipt of a
+ configuration change interrupt.
+
+ The “num_pages” configuration field is examined. If this is
+ greater than the “actual” number of pages, memory must be given
+ to the balloon. If it is less than the “actual” number of
+ pages, memory may be taken back from the balloon for general
+ use.
+
+ To supply memory to the balloon (aka. inflate):
+
+ The driver constructs an array of addresses of unused memory
+ pages. These addresses are divided by 4096[footnote:
+This is historical, and independent of the guest page size
+] and the descriptor describing the resulting 32-bit array is
+ added to the inflateq.
+
+ To remove memory from the balloon (aka. deflate):
+
+ The driver constructs an array of addresses of memory pages it
+ has previously given to the balloon, as described above. This
+ descriptor is added to the deflateq.
+
+ If the VIRTIO_BALLOON_F_MUST_TELL_HOST feature is set, the
+ guest may not use these requested pages until that descriptor
+ in the deflateq has been used by the device.
+
+ Otherwise, the guest may begin to re-use pages previously given
+ to the balloon before the device has acknowledged their
+ withdrawl. [footnote:
+In this case, deflation advice is merely a courtesy
+]
+
+ In either case, once the device has completed the inflation or
+ deflation, the “actual” field of the configuration should be
+ updated to reflect the new number of pages in the balloon.[footnote:
+As updates to configuration space are not atomic, this field
+isn't particularly reliable, but can be used to diagnose buggy
+guests.
+]
+
+ Memory Statistics
+
+The stats virtqueue is atypical because communication is driven
+by the device (not the driver). The channel becomes active at
+driver initialization time when the driver adds an empty buffer
+and notifies the device. A request for memory statistics proceeds
+as follows:
+
+ The device pushes the buffer onto the used ring and sends an
+ interrupt.
+
+ The driver pops the used buffer and discards it.
+
+ The driver collects memory statistics and writes them into a
+ new buffer.
+
+ The driver adds the buffer to the virtqueue and notifies the
+ device.
+
+ The device pops the buffer (retaining it to initiate a
+ subsequent request) and consumes the statistics.
+
+ Memory Statistics Format Each statistic consists of a 16 bit
+ tag and a 64 bit value. Both quantities are represented in the
+ native endian of the guest. All statistics are optional and the
+ driver may choose which ones to supply. To guarantee backwards
+ compatibility, unsupported statistics should be omitted.
+
+ struct virtio_balloon_stat {
+
+#define VIRTIO_BALLOON_S_SWAP_IN 0
+
+#define VIRTIO_BALLOON_S_SWAP_OUT 1
+
+#define VIRTIO_BALLOON_S_MAJFLT 2
+
+#define VIRTIO_BALLOON_S_MINFLT 3
+
+#define VIRTIO_BALLOON_S_MEMFREE 4
+
+#define VIRTIO_BALLOON_S_MEMTOT 5
+
+ u16 tag;
+
+ u64 val;
+
+} __attribute__((packed));
+
+ Tags
+
+ VIRTIO_BALLOON_S_SWAP_IN The amount of memory that has been
+ swapped in (in bytes).
+
+ VIRTIO_BALLOON_S_SWAP_OUT The amount of memory that has been
+ swapped out to disk (in bytes).
+
+ VIRTIO_BALLOON_S_MAJFLT The number of major page faults that
+ have occurred.
+
+ VIRTIO_BALLOON_S_MINFLT The number of minor page faults that
+ have occurred.
+
+ VIRTIO_BALLOON_S_MEMFREE The amount of memory not being used
+ for any purpose (in bytes).
+
+ VIRTIO_BALLOON_S_MEMTOT The total amount of memory available
+ (in bytes).
+
diff --git a/MAINTAINERS b/MAINTAINERS
index 1d445f5..069ee3b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4971,7 +4971,7 @@
M: Ingo Molnar <mingo@elte.hu>
M: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
S: Supported
-F: kernel/perf_event*.c
+F: kernel/events/*
F: include/linux/perf_event.h
F: arch/*/kernel/perf_event*.c
F: arch/*/kernel/*/perf_event*.c
diff --git a/Makefile b/Makefile
index 3241d41..788511f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,8 @@
VERSION = 3
PATCHLEVEL = 1
SUBLEVEL = 0
-EXTRAVERSION = -rc2
-NAME = Wet Seal
+EXTRAVERSION = -rc3
+NAME = "Divemaster Edition"
# *DOCUMENTATION*
# To see a list of typical targets execute "make help"
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 1248547..3ff7785 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -162,7 +162,6 @@
select ACPI_NUMA
select SWIOTLB
select PCI_MSI
- select DMAR
help
This selects the system type of your hardware. A "generic" kernel
will run on any supported IA-64 system. However, if you configure
diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig
index 1d7bca0..0e5cd14 100644
--- a/arch/ia64/configs/generic_defconfig
+++ b/arch/ia64/configs/generic_defconfig
@@ -234,3 +234,4 @@
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_CRC_T10DIF=y
CONFIG_MISC_DEVICES=y
+CONFIG_DMAR=y
diff --git a/arch/m68k/include/asm/page_mm.h b/arch/m68k/include/asm/page_mm.h
index 31d5570..89f2014 100644
--- a/arch/m68k/include/asm/page_mm.h
+++ b/arch/m68k/include/asm/page_mm.h
@@ -162,7 +162,7 @@
pgdat->node_mem_map + (__pfn - pgdat->node_start_pfn); \
})
#define page_to_pfn(_page) ({ \
- struct page *__p = (_page); \
+ const struct page *__p = (_page); \
struct pglist_data *pgdat; \
pgdat = &pg_data_map[page_to_nid(__p)]; \
((__p) - pgdat->node_mem_map) + pgdat->node_start_pfn; \
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 42c67be..1a6f20d 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -55,6 +55,7 @@
select PERF_USE_VMALLOC
select IRQ_PREFLOW_FASTEOI
select ARCH_HAVE_NMI_SAFE_CMPXCHG
+ select HAVE_C_RECORDMCOUNT
config ARCH_DEFCONFIG
string
diff --git a/arch/sparc/include/asm/sigcontext.h b/arch/sparc/include/asm/sigcontext.h
index a1607d1..69914d7 100644
--- a/arch/sparc/include/asm/sigcontext.h
+++ b/arch/sparc/include/asm/sigcontext.h
@@ -45,6 +45,19 @@
int si_mask;
} __siginfo32_t;
+#define __SIGC_MAXWIN 7
+
+typedef struct {
+ unsigned long locals[8];
+ unsigned long ins[8];
+} __siginfo_reg_window;
+
+typedef struct {
+ int wsaved;
+ __siginfo_reg_window reg_window[__SIGC_MAXWIN];
+ unsigned long rwbuf_stkptrs[__SIGC_MAXWIN];
+} __siginfo_rwin_t;
+
#ifdef CONFIG_SPARC64
typedef struct {
unsigned int si_float_regs [64];
@@ -73,6 +86,7 @@
unsigned long ss_size;
} sigc_stack;
unsigned long sigc_mask;
+ __siginfo_rwin_t * sigc_rwin_save;
};
#else
diff --git a/arch/sparc/include/asm/spinlock_32.h b/arch/sparc/include/asm/spinlock_32.h
index 5f5b8bf..bcc98fc 100644
--- a/arch/sparc/include/asm/spinlock_32.h
+++ b/arch/sparc/include/asm/spinlock_32.h
@@ -131,6 +131,15 @@
*(volatile __u32 *)&lp->lock = ~0U;
}
+static void inline arch_write_unlock(arch_rwlock_t *lock)
+{
+ __asm__ __volatile__(
+" st %%g0, [%0]"
+ : /* no outputs */
+ : "r" (lock)
+ : "memory");
+}
+
static inline int arch_write_trylock(arch_rwlock_t *rw)
{
unsigned int val;
@@ -175,8 +184,6 @@
res; \
})
-#define arch_write_unlock(rw) do { (rw)->lock = 0; } while(0)
-
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
#define arch_read_lock_flags(rw, flags) arch_read_lock(rw)
#define arch_write_lock_flags(rw, flags) arch_write_lock(rw)
diff --git a/arch/sparc/include/asm/spinlock_64.h b/arch/sparc/include/asm/spinlock_64.h
index 073936a..9689176 100644
--- a/arch/sparc/include/asm/spinlock_64.h
+++ b/arch/sparc/include/asm/spinlock_64.h
@@ -210,14 +210,8 @@
return result;
}
-#define arch_read_lock(p) arch_read_lock(p)
#define arch_read_lock_flags(p, f) arch_read_lock(p)
-#define arch_read_trylock(p) arch_read_trylock(p)
-#define arch_read_unlock(p) arch_read_unlock(p)
-#define arch_write_lock(p) arch_write_lock(p)
#define arch_write_lock_flags(p, f) arch_write_lock(p)
-#define arch_write_unlock(p) arch_write_unlock(p)
-#define arch_write_trylock(p) arch_write_trylock(p)
#define arch_read_can_lock(rw) (!((rw)->lock & 0x80000000UL))
#define arch_write_can_lock(rw) (!(rw)->lock)
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index b90b4a1..cb85458 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -32,6 +32,7 @@
obj-y += process_$(BITS).o
obj-y += signal_$(BITS).o
+obj-y += sigutil_$(BITS).o
obj-$(CONFIG_SPARC32) += ioport.o
obj-y += setup_$(BITS).o
obj-y += idprom.o
diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index a19f041..1aaf8c1 100644
--- a/arch/sparc/kernel/pcic.c
+++ b/arch/sparc/kernel/pcic.c
@@ -352,8 +352,8 @@
strcpy(pbm->prom_name, namebuf);
{
- extern volatile int t_nmi[1];
- extern int pcic_nmi_trap_patch[1];
+ extern volatile int t_nmi[4];
+ extern int pcic_nmi_trap_patch[4];
t_nmi[0] = pcic_nmi_trap_patch[0];
t_nmi[1] = pcic_nmi_trap_patch[1];
diff --git a/arch/sparc/kernel/signal32.c b/arch/sparc/kernel/signal32.c
index 75fad42..1ba95af 100644
--- a/arch/sparc/kernel/signal32.c
+++ b/arch/sparc/kernel/signal32.c
@@ -29,6 +29,8 @@
#include <asm/visasm.h>
#include <asm/compat_signal.h>
+#include "sigutil.h"
+
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
/* This magic should be in g_upper[0] for all upper parts
@@ -44,14 +46,14 @@
struct signal_frame32 {
struct sparc_stackf32 ss;
__siginfo32_t info;
- /* __siginfo_fpu32_t * */ u32 fpu_save;
+ /* __siginfo_fpu_t * */ u32 fpu_save;
unsigned int insns[2];
unsigned int extramask[_COMPAT_NSIG_WORDS - 1];
unsigned int extra_size; /* Should be sizeof(siginfo_extra_v8plus_t) */
/* Only valid if (info.si_regs.psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS */
siginfo_extra_v8plus_t v8plus;
- __siginfo_fpu_t fpu_state;
-};
+ /* __siginfo_rwin_t * */u32 rwin_save;
+} __attribute__((aligned(8)));
typedef struct compat_siginfo{
int si_signo;
@@ -110,18 +112,14 @@
compat_siginfo_t info;
struct pt_regs32 regs;
compat_sigset_t mask;
- /* __siginfo_fpu32_t * */ u32 fpu_save;
+ /* __siginfo_fpu_t * */ u32 fpu_save;
unsigned int insns[2];
stack_t32 stack;
unsigned int extra_size; /* Should be sizeof(siginfo_extra_v8plus_t) */
/* Only valid if (regs.psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS */
siginfo_extra_v8plus_t v8plus;
- __siginfo_fpu_t fpu_state;
-};
-
-/* Align macros */
-#define SF_ALIGNEDSZ (((sizeof(struct signal_frame32) + 15) & (~15)))
-#define RT_ALIGNEDSZ (((sizeof(struct rt_signal_frame32) + 15) & (~15)))
+ /* __siginfo_rwin_t * */u32 rwin_save;
+} __attribute__((aligned(8)));
int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
{
@@ -192,30 +190,13 @@
return 0;
}
-static int restore_fpu_state32(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
-{
- unsigned long *fpregs = current_thread_info()->fpregs;
- unsigned long fprs;
- int err;
-
- err = __get_user(fprs, &fpu->si_fprs);
- fprs_write(0);
- regs->tstate &= ~TSTATE_PEF;
- if (fprs & FPRS_DL)
- err |= copy_from_user(fpregs, &fpu->si_float_regs[0], (sizeof(unsigned int) * 32));
- if (fprs & FPRS_DU)
- err |= copy_from_user(fpregs+16, &fpu->si_float_regs[32], (sizeof(unsigned int) * 32));
- err |= __get_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
- err |= __get_user(current_thread_info()->gsr[0], &fpu->si_gsr);
- current_thread_info()->fpsaved[0] |= fprs;
- return err;
-}
-
void do_sigreturn32(struct pt_regs *regs)
{
struct signal_frame32 __user *sf;
+ compat_uptr_t fpu_save;
+ compat_uptr_t rwin_save;
unsigned int psr;
- unsigned pc, npc, fpu_save;
+ unsigned pc, npc;
sigset_t set;
unsigned seta[_COMPAT_NSIG_WORDS];
int err, i;
@@ -273,8 +254,13 @@
pt_regs_clear_syscall(regs);
err |= __get_user(fpu_save, &sf->fpu_save);
- if (fpu_save)
- err |= restore_fpu_state32(regs, &sf->fpu_state);
+ if (!err && fpu_save)
+ err |= restore_fpu_state(regs, compat_ptr(fpu_save));
+ err |= __get_user(rwin_save, &sf->rwin_save);
+ if (!err && rwin_save) {
+ if (restore_rwin_state(compat_ptr(rwin_save)))
+ goto segv;
+ }
err |= __get_user(seta[0], &sf->info.si_mask);
err |= copy_from_user(seta+1, &sf->extramask,
(_COMPAT_NSIG_WORDS - 1) * sizeof(unsigned int));
@@ -300,7 +286,9 @@
asmlinkage void do_rt_sigreturn32(struct pt_regs *regs)
{
struct rt_signal_frame32 __user *sf;
- unsigned int psr, pc, npc, fpu_save, u_ss_sp;
+ unsigned int psr, pc, npc, u_ss_sp;
+ compat_uptr_t fpu_save;
+ compat_uptr_t rwin_save;
mm_segment_t old_fs;
sigset_t set;
compat_sigset_t seta;
@@ -359,8 +347,8 @@
pt_regs_clear_syscall(regs);
err |= __get_user(fpu_save, &sf->fpu_save);
- if (fpu_save)
- err |= restore_fpu_state32(regs, &sf->fpu_state);
+ if (!err && fpu_save)
+ err |= restore_fpu_state(regs, compat_ptr(fpu_save));
err |= copy_from_user(&seta, &sf->mask, sizeof(compat_sigset_t));
err |= __get_user(u_ss_sp, &sf->stack.ss_sp);
st.ss_sp = compat_ptr(u_ss_sp);
@@ -376,6 +364,12 @@
do_sigaltstack((stack_t __user *) &st, NULL, (unsigned long)sf);
set_fs(old_fs);
+ err |= __get_user(rwin_save, &sf->rwin_save);
+ if (!err && rwin_save) {
+ if (restore_rwin_state(compat_ptr(rwin_save)))
+ goto segv;
+ }
+
switch (_NSIG_WORDS) {
case 4: set.sig[3] = seta.sig[6] + (((long)seta.sig[7]) << 32);
case 3: set.sig[2] = seta.sig[4] + (((long)seta.sig[5]) << 32);
@@ -433,26 +427,6 @@
return (void __user *) sp;
}
-static int save_fpu_state32(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
-{
- unsigned long *fpregs = current_thread_info()->fpregs;
- unsigned long fprs;
- int err = 0;
-
- fprs = current_thread_info()->fpsaved[0];
- if (fprs & FPRS_DL)
- err |= copy_to_user(&fpu->si_float_regs[0], fpregs,
- (sizeof(unsigned int) * 32));
- if (fprs & FPRS_DU)
- err |= copy_to_user(&fpu->si_float_regs[32], fpregs+16,
- (sizeof(unsigned int) * 32));
- err |= __put_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
- err |= __put_user(current_thread_info()->gsr[0], &fpu->si_gsr);
- err |= __put_user(fprs, &fpu->si_fprs);
-
- return err;
-}
-
/* The I-cache flush instruction only works in the primary ASI, which
* right now is the nucleus, aka. kernel space.
*
@@ -515,18 +489,23 @@
int signo, sigset_t *oldset)
{
struct signal_frame32 __user *sf;
+ int i, err, wsaved;
+ void __user *tail;
int sigframe_size;
u32 psr;
- int i, err;
unsigned int seta[_COMPAT_NSIG_WORDS];
/* 1. Make sure everything is clean */
synchronize_user_stack();
save_and_clear_fpu();
- sigframe_size = SF_ALIGNEDSZ;
- if (!(current_thread_info()->fpsaved[0] & FPRS_FEF))
- sigframe_size -= sizeof(__siginfo_fpu_t);
+ wsaved = get_thread_wsaved();
+
+ sigframe_size = sizeof(*sf);
+ if (current_thread_info()->fpsaved[0] & FPRS_FEF)
+ sigframe_size += sizeof(__siginfo_fpu_t);
+ if (wsaved)
+ sigframe_size += sizeof(__siginfo_rwin_t);
sf = (struct signal_frame32 __user *)
get_sigframe(&ka->sa, regs, sigframe_size);
@@ -534,8 +513,7 @@
if (invalid_frame_pointer(sf, sigframe_size))
goto sigill;
- if (get_thread_wsaved() != 0)
- goto sigill;
+ tail = (sf + 1);
/* 2. Save the current process state */
if (test_thread_flag(TIF_32BIT)) {
@@ -560,11 +538,22 @@
&sf->v8plus.asi);
if (psr & PSR_EF) {
- err |= save_fpu_state32(regs, &sf->fpu_state);
- err |= __put_user((u64)&sf->fpu_state, &sf->fpu_save);
+ __siginfo_fpu_t __user *fp = tail;
+ tail += sizeof(*fp);
+ err |= save_fpu_state(regs, fp);
+ err |= __put_user((u64)fp, &sf->fpu_save);
} else {
err |= __put_user(0, &sf->fpu_save);
}
+ if (wsaved) {
+ __siginfo_rwin_t __user *rwp = tail;
+ tail += sizeof(*rwp);
+ err |= save_rwin_state(wsaved, rwp);
+ err |= __put_user((u64)rwp, &sf->rwin_save);
+ set_thread_wsaved(0);
+ } else {
+ err |= __put_user(0, &sf->rwin_save);
+ }
switch (_NSIG_WORDS) {
case 4: seta[7] = (oldset->sig[3] >> 32);
@@ -580,10 +569,21 @@
err |= __copy_to_user(sf->extramask, seta + 1,
(_COMPAT_NSIG_WORDS - 1) * sizeof(unsigned int));
- err |= copy_in_user((u32 __user *)sf,
- (u32 __user *)(regs->u_regs[UREG_FP]),
- sizeof(struct reg_window32));
-
+ if (!wsaved) {
+ err |= copy_in_user((u32 __user *)sf,
+ (u32 __user *)(regs->u_regs[UREG_FP]),
+ sizeof(struct reg_window32));
+ } else {
+ struct reg_window *rp;
+
+ rp = ¤t_thread_info()->reg_window[wsaved - 1];
+ for (i = 0; i < 8; i++)
+ err |= __put_user(rp->locals[i], &sf->ss.locals[i]);
+ for (i = 0; i < 6; i++)
+ err |= __put_user(rp->ins[i], &sf->ss.ins[i]);
+ err |= __put_user(rp->ins[6], &sf->ss.fp);
+ err |= __put_user(rp->ins[7], &sf->ss.callers_pc);
+ }
if (err)
goto sigsegv;
@@ -613,7 +613,6 @@
err |= __put_user(0x91d02010, &sf->insns[1]); /*t 0x10*/
if (err)
goto sigsegv;
-
flush_signal_insns(address);
}
return 0;
@@ -632,18 +631,23 @@
siginfo_t *info)
{
struct rt_signal_frame32 __user *sf;
+ int i, err, wsaved;
+ void __user *tail;
int sigframe_size;
u32 psr;
- int i, err;
compat_sigset_t seta;
/* 1. Make sure everything is clean */
synchronize_user_stack();
save_and_clear_fpu();
- sigframe_size = RT_ALIGNEDSZ;
- if (!(current_thread_info()->fpsaved[0] & FPRS_FEF))
- sigframe_size -= sizeof(__siginfo_fpu_t);
+ wsaved = get_thread_wsaved();
+
+ sigframe_size = sizeof(*sf);
+ if (current_thread_info()->fpsaved[0] & FPRS_FEF)
+ sigframe_size += sizeof(__siginfo_fpu_t);
+ if (wsaved)
+ sigframe_size += sizeof(__siginfo_rwin_t);
sf = (struct rt_signal_frame32 __user *)
get_sigframe(&ka->sa, regs, sigframe_size);
@@ -651,8 +655,7 @@
if (invalid_frame_pointer(sf, sigframe_size))
goto sigill;
- if (get_thread_wsaved() != 0)
- goto sigill;
+ tail = (sf + 1);
/* 2. Save the current process state */
if (test_thread_flag(TIF_32BIT)) {
@@ -677,11 +680,22 @@
&sf->v8plus.asi);
if (psr & PSR_EF) {
- err |= save_fpu_state32(regs, &sf->fpu_state);
- err |= __put_user((u64)&sf->fpu_state, &sf->fpu_save);
+ __siginfo_fpu_t __user *fp = tail;
+ tail += sizeof(*fp);
+ err |= save_fpu_state(regs, fp);
+ err |= __put_user((u64)fp, &sf->fpu_save);
} else {
err |= __put_user(0, &sf->fpu_save);
}
+ if (wsaved) {
+ __siginfo_rwin_t __user *rwp = tail;
+ tail += sizeof(*rwp);
+ err |= save_rwin_state(wsaved, rwp);
+ err |= __put_user((u64)rwp, &sf->rwin_save);
+ set_thread_wsaved(0);
+ } else {
+ err |= __put_user(0, &sf->rwin_save);
+ }
/* Update the siginfo structure. */
err |= copy_siginfo_to_user32(&sf->info, info);
@@ -703,9 +717,21 @@
}
err |= __copy_to_user(&sf->mask, &seta, sizeof(compat_sigset_t));
- err |= copy_in_user((u32 __user *)sf,
- (u32 __user *)(regs->u_regs[UREG_FP]),
- sizeof(struct reg_window32));
+ if (!wsaved) {
+ err |= copy_in_user((u32 __user *)sf,
+ (u32 __user *)(regs->u_regs[UREG_FP]),
+ sizeof(struct reg_window32));
+ } else {
+ struct reg_window *rp;
+
+ rp = ¤t_thread_info()->reg_window[wsaved - 1];
+ for (i = 0; i < 8; i++)
+ err |= __put_user(rp->locals[i], &sf->ss.locals[i]);
+ for (i = 0; i < 6; i++)
+ err |= __put_user(rp->ins[i], &sf->ss.ins[i]);
+ err |= __put_user(rp->ins[6], &sf->ss.fp);
+ err |= __put_user(rp->ins[7], &sf->ss.callers_pc);
+ }
if (err)
goto sigsegv;
diff --git a/arch/sparc/kernel/signal_32.c b/arch/sparc/kernel/signal_32.c
index 5e5c5fd..04ede8f 100644
--- a/arch/sparc/kernel/signal_32.c
+++ b/arch/sparc/kernel/signal_32.c
@@ -26,6 +26,8 @@
#include <asm/pgtable.h>
#include <asm/cacheflush.h> /* flush_sig_insns */
+#include "sigutil.h"
+
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
extern void fpsave(unsigned long *fpregs, unsigned long *fsr,
@@ -39,8 +41,8 @@
unsigned long insns[2] __attribute__ ((aligned (8)));
unsigned int extramask[_NSIG_WORDS - 1];
unsigned int extra_size; /* Should be 0 */
- __siginfo_fpu_t fpu_state;
-};
+ __siginfo_rwin_t __user *rwin_save;
+} __attribute__((aligned(8)));
struct rt_signal_frame {
struct sparc_stackf ss;
@@ -51,8 +53,8 @@
unsigned int insns[2];
stack_t stack;
unsigned int extra_size; /* Should be 0 */
- __siginfo_fpu_t fpu_state;
-};
+ __siginfo_rwin_t __user *rwin_save;
+} __attribute__((aligned(8)));
/* Align macros */
#define SF_ALIGNEDSZ (((sizeof(struct signal_frame) + 7) & (~7)))
@@ -79,43 +81,13 @@
return _sigpause_common(set);
}
-static inline int
-restore_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
-{
- int err;
-#ifdef CONFIG_SMP
- if (test_tsk_thread_flag(current, TIF_USEDFPU))
- regs->psr &= ~PSR_EF;
-#else
- if (current == last_task_used_math) {
- last_task_used_math = NULL;
- regs->psr &= ~PSR_EF;
- }
-#endif
- set_used_math();
- clear_tsk_thread_flag(current, TIF_USEDFPU);
-
- if (!access_ok(VERIFY_READ, fpu, sizeof(*fpu)))
- return -EFAULT;
-
- err = __copy_from_user(¤t->thread.float_regs[0], &fpu->si_float_regs[0],
- (sizeof(unsigned long) * 32));
- err |= __get_user(current->thread.fsr, &fpu->si_fsr);
- err |= __get_user(current->thread.fpqdepth, &fpu->si_fpqdepth);
- if (current->thread.fpqdepth != 0)
- err |= __copy_from_user(¤t->thread.fpqueue[0],
- &fpu->si_fpqueue[0],
- ((sizeof(unsigned long) +
- (sizeof(unsigned long *)))*16));
- return err;
-}
-
asmlinkage void do_sigreturn(struct pt_regs *regs)
{
struct signal_frame __user *sf;
unsigned long up_psr, pc, npc;
sigset_t set;
__siginfo_fpu_t __user *fpu_save;
+ __siginfo_rwin_t __user *rwin_save;
int err;
/* Always make any pending restarted system calls return -EINTR */
@@ -150,9 +122,11 @@
pt_regs_clear_syscall(regs);
err |= __get_user(fpu_save, &sf->fpu_save);
-
if (fpu_save)
err |= restore_fpu_state(regs, fpu_save);
+ err |= __get_user(rwin_save, &sf->rwin_save);
+ if (rwin_save)
+ err |= restore_rwin_state(rwin_save);
/* This is pretty much atomic, no amount locking would prevent
* the races which exist anyways.
@@ -180,6 +154,7 @@
struct rt_signal_frame __user *sf;
unsigned int psr, pc, npc;
__siginfo_fpu_t __user *fpu_save;
+ __siginfo_rwin_t __user *rwin_save;
mm_segment_t old_fs;
sigset_t set;
stack_t st;
@@ -207,8 +182,7 @@
pt_regs_clear_syscall(regs);
err |= __get_user(fpu_save, &sf->fpu_save);
-
- if (fpu_save)
+ if (!err && fpu_save)
err |= restore_fpu_state(regs, fpu_save);
err |= __copy_from_user(&set, &sf->mask, sizeof(sigset_t));
@@ -228,6 +202,12 @@
do_sigaltstack((const stack_t __user *) &st, NULL, (unsigned long)sf);
set_fs(old_fs);
+ err |= __get_user(rwin_save, &sf->rwin_save);
+ if (!err && rwin_save) {
+ if (restore_rwin_state(rwin_save))
+ goto segv;
+ }
+
sigdelsetmask(&set, ~_BLOCKABLE);
spin_lock_irq(¤t->sighand->siglock);
current->blocked = set;
@@ -280,53 +260,23 @@
return (void __user *) sp;
}
-static inline int
-save_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
-{
- int err = 0;
-#ifdef CONFIG_SMP
- if (test_tsk_thread_flag(current, TIF_USEDFPU)) {
- put_psr(get_psr() | PSR_EF);
- fpsave(¤t->thread.float_regs[0], ¤t->thread.fsr,
- ¤t->thread.fpqueue[0], ¤t->thread.fpqdepth);
- regs->psr &= ~(PSR_EF);
- clear_tsk_thread_flag(current, TIF_USEDFPU);
- }
-#else
- if (current == last_task_used_math) {
- put_psr(get_psr() | PSR_EF);
- fpsave(¤t->thread.float_regs[0], ¤t->thread.fsr,
- ¤t->thread.fpqueue[0], ¤t->thread.fpqdepth);
- last_task_used_math = NULL;
- regs->psr &= ~(PSR_EF);
- }
-#endif
- err |= __copy_to_user(&fpu->si_float_regs[0],
- ¤t->thread.float_regs[0],
- (sizeof(unsigned long) * 32));
- err |= __put_user(current->thread.fsr, &fpu->si_fsr);
- err |= __put_user(current->thread.fpqdepth, &fpu->si_fpqdepth);
- if (current->thread.fpqdepth != 0)
- err |= __copy_to_user(&fpu->si_fpqueue[0],
- ¤t->thread.fpqueue[0],
- ((sizeof(unsigned long) +
- (sizeof(unsigned long *)))*16));
- clear_used_math();
- return err;
-}
-
static int setup_frame(struct k_sigaction *ka, struct pt_regs *regs,
int signo, sigset_t *oldset)
{
struct signal_frame __user *sf;
- int sigframe_size, err;
+ int sigframe_size, err, wsaved;
+ void __user *tail;
/* 1. Make sure everything is clean */
synchronize_user_stack();
- sigframe_size = SF_ALIGNEDSZ;
- if (!used_math())
- sigframe_size -= sizeof(__siginfo_fpu_t);
+ wsaved = current_thread_info()->w_saved;
+
+ sigframe_size = sizeof(*sf);
+ if (used_math())
+ sigframe_size += sizeof(__siginfo_fpu_t);
+ if (wsaved)
+ sigframe_size += sizeof(__siginfo_rwin_t);
sf = (struct signal_frame __user *)
get_sigframe(&ka->sa, regs, sigframe_size);
@@ -334,8 +284,7 @@
if (invalid_frame_pointer(sf, sigframe_size))
goto sigill_and_return;
- if (current_thread_info()->w_saved != 0)
- goto sigill_and_return;
+ tail = sf + 1;
/* 2. Save the current process state */
err = __copy_to_user(&sf->info.si_regs, regs, sizeof(struct pt_regs));
@@ -343,17 +292,34 @@
err |= __put_user(0, &sf->extra_size);
if (used_math()) {
- err |= save_fpu_state(regs, &sf->fpu_state);
- err |= __put_user(&sf->fpu_state, &sf->fpu_save);
+ __siginfo_fpu_t __user *fp = tail;
+ tail += sizeof(*fp);
+ err |= save_fpu_state(regs, fp);
+ err |= __put_user(fp, &sf->fpu_save);
} else {
err |= __put_user(0, &sf->fpu_save);
}
+ if (wsaved) {
+ __siginfo_rwin_t __user *rwp = tail;
+ tail += sizeof(*rwp);
+ err |= save_rwin_state(wsaved, rwp);
+ err |= __put_user(rwp, &sf->rwin_save);
+ } else {
+ err |= __put_user(0, &sf->rwin_save);
+ }
err |= __put_user(oldset->sig[0], &sf->info.si_mask);
err |= __copy_to_user(sf->extramask, &oldset->sig[1],
(_NSIG_WORDS - 1) * sizeof(unsigned int));
- err |= __copy_to_user(sf, (char *) regs->u_regs[UREG_FP],
- sizeof(struct reg_window32));
+ if (!wsaved) {
+ err |= __copy_to_user(sf, (char *) regs->u_regs[UREG_FP],
+ sizeof(struct reg_window32));
+ } else {
+ struct reg_window32 *rp;
+
+ rp = ¤t_thread_info()->reg_window[wsaved - 1];
+ err |= __copy_to_user(sf, rp, sizeof(struct reg_window32));
+ }
if (err)
goto sigsegv;
@@ -399,21 +365,24 @@
int signo, sigset_t *oldset, siginfo_t *info)
{
struct rt_signal_frame __user *sf;
- int sigframe_size;
+ int sigframe_size, wsaved;
+ void __user *tail;
unsigned int psr;
int err;
synchronize_user_stack();
- sigframe_size = RT_ALIGNEDSZ;
- if (!used_math())
- sigframe_size -= sizeof(__siginfo_fpu_t);
+ wsaved = current_thread_info()->w_saved;
+ sigframe_size = sizeof(*sf);
+ if (used_math())
+ sigframe_size += sizeof(__siginfo_fpu_t);
+ if (wsaved)
+ sigframe_size += sizeof(__siginfo_rwin_t);
sf = (struct rt_signal_frame __user *)
get_sigframe(&ka->sa, regs, sigframe_size);
if (invalid_frame_pointer(sf, sigframe_size))
goto sigill;
- if (current_thread_info()->w_saved != 0)
- goto sigill;
+ tail = sf + 1;
err = __put_user(regs->pc, &sf->regs.pc);
err |= __put_user(regs->npc, &sf->regs.npc);
err |= __put_user(regs->y, &sf->regs.y);
@@ -425,11 +394,21 @@
err |= __put_user(0, &sf->extra_size);
if (psr & PSR_EF) {
- err |= save_fpu_state(regs, &sf->fpu_state);
- err |= __put_user(&sf->fpu_state, &sf->fpu_save);
+ __siginfo_fpu_t *fp = tail;
+ tail += sizeof(*fp);
+ err |= save_fpu_state(regs, fp);
+ err |= __put_user(fp, &sf->fpu_save);
} else {
err |= __put_user(0, &sf->fpu_save);
}
+ if (wsaved) {
+ __siginfo_rwin_t *rwp = tail;
+ tail += sizeof(*rwp);
+ err |= save_rwin_state(wsaved, rwp);
+ err |= __put_user(rwp, &sf->rwin_save);
+ } else {
+ err |= __put_user(0, &sf->rwin_save);
+ }
err |= __copy_to_user(&sf->mask, &oldset->sig[0], sizeof(sigset_t));
/* Setup sigaltstack */
@@ -437,8 +416,15 @@
err |= __put_user(sas_ss_flags(regs->u_regs[UREG_FP]), &sf->stack.ss_flags);
err |= __put_user(current->sas_ss_size, &sf->stack.ss_size);
- err |= __copy_to_user(sf, (char *) regs->u_regs[UREG_FP],
- sizeof(struct reg_window32));
+ if (!wsaved) {
+ err |= __copy_to_user(sf, (char *) regs->u_regs[UREG_FP],
+ sizeof(struct reg_window32));
+ } else {
+ struct reg_window32 *rp;
+
+ rp = ¤t_thread_info()->reg_window[wsaved - 1];
+ err |= __copy_to_user(sf, rp, sizeof(struct reg_window32));
+ }
err |= copy_siginfo_to_user(&sf->info, info);
diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c
index 006fe45..47509df 100644
--- a/arch/sparc/kernel/signal_64.c
+++ b/arch/sparc/kernel/signal_64.c
@@ -34,6 +34,7 @@
#include "entry.h"
#include "systbls.h"
+#include "sigutil.h"
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
@@ -236,7 +237,7 @@
__siginfo_fpu_t __user *fpu_save;
stack_t stack;
sigset_t mask;
- __siginfo_fpu_t fpu_state;
+ __siginfo_rwin_t *rwin_save;
};
static long _sigpause_common(old_sigset_t set)
@@ -266,33 +267,12 @@
return _sigpause_common(set);
}
-static inline int
-restore_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
-{
- unsigned long *fpregs = current_thread_info()->fpregs;
- unsigned long fprs;
- int err;
-
- err = __get_user(fprs, &fpu->si_fprs);
- fprs_write(0);
- regs->tstate &= ~TSTATE_PEF;
- if (fprs & FPRS_DL)
- err |= copy_from_user(fpregs, &fpu->si_float_regs[0],
- (sizeof(unsigned int) * 32));
- if (fprs & FPRS_DU)
- err |= copy_from_user(fpregs+16, &fpu->si_float_regs[32],
- (sizeof(unsigned int) * 32));
- err |= __get_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
- err |= __get_user(current_thread_info()->gsr[0], &fpu->si_gsr);
- current_thread_info()->fpsaved[0] |= fprs;
- return err;
-}
-
void do_rt_sigreturn(struct pt_regs *regs)
{
struct rt_signal_frame __user *sf;
unsigned long tpc, tnpc, tstate;
__siginfo_fpu_t __user *fpu_save;
+ __siginfo_rwin_t __user *rwin_save;
sigset_t set;
int err;
@@ -325,8 +305,8 @@
regs->tstate |= (tstate & (TSTATE_ASI | TSTATE_ICC | TSTATE_XCC));
err |= __get_user(fpu_save, &sf->fpu_save);
- if (fpu_save)
- err |= restore_fpu_state(regs, &sf->fpu_state);
+ if (!err && fpu_save)
+ err |= restore_fpu_state(regs, fpu_save);
err |= __copy_from_user(&set, &sf->mask, sizeof(sigset_t));
err |= do_sigaltstack(&sf->stack, NULL, (unsigned long)sf);
@@ -334,6 +314,12 @@
if (err)
goto segv;
+ err |= __get_user(rwin_save, &sf->rwin_save);
+ if (!err && rwin_save) {
+ if (restore_rwin_state(rwin_save))
+ goto segv;
+ }
+
regs->tpc = tpc;
regs->tnpc = tnpc;
@@ -351,34 +337,13 @@
}
/* Checks if the fp is valid */
-static int invalid_frame_pointer(void __user *fp, int fplen)
+static int invalid_frame_pointer(void __user *fp)
{
if (((unsigned long) fp) & 15)
return 1;
return 0;
}
-static inline int
-save_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
-{
- unsigned long *fpregs = current_thread_info()->fpregs;
- unsigned long fprs;
- int err = 0;
-
- fprs = current_thread_info()->fpsaved[0];
- if (fprs & FPRS_DL)
- err |= copy_to_user(&fpu->si_float_regs[0], fpregs,
- (sizeof(unsigned int) * 32));
- if (fprs & FPRS_DU)
- err |= copy_to_user(&fpu->si_float_regs[32], fpregs+16,
- (sizeof(unsigned int) * 32));
- err |= __put_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
- err |= __put_user(current_thread_info()->gsr[0], &fpu->si_gsr);
- err |= __put_user(fprs, &fpu->si_fprs);
-
- return err;
-}
-
static inline void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, unsigned long framesize)
{
unsigned long sp = regs->u_regs[UREG_FP] + STACK_BIAS;
@@ -414,34 +379,48 @@
int signo, sigset_t *oldset, siginfo_t *info)
{
struct rt_signal_frame __user *sf;
- int sigframe_size, err;
+ int wsaved, err, sf_size;
+ void __user *tail;
/* 1. Make sure everything is clean */
synchronize_user_stack();
save_and_clear_fpu();
- sigframe_size = sizeof(struct rt_signal_frame);
- if (!(current_thread_info()->fpsaved[0] & FPRS_FEF))
- sigframe_size -= sizeof(__siginfo_fpu_t);
+ wsaved = get_thread_wsaved();
+ sf_size = sizeof(struct rt_signal_frame);
+ if (current_thread_info()->fpsaved[0] & FPRS_FEF)
+ sf_size += sizeof(__siginfo_fpu_t);
+ if (wsaved)
+ sf_size += sizeof(__siginfo_rwin_t);
sf = (struct rt_signal_frame __user *)
- get_sigframe(ka, regs, sigframe_size);
-
- if (invalid_frame_pointer (sf, sigframe_size))
+ get_sigframe(ka, regs, sf_size);
+
+ if (invalid_frame_pointer (sf))
goto sigill;
- if (get_thread_wsaved() != 0)
- goto sigill;
+ tail = (sf + 1);
/* 2. Save the current process state */
err = copy_to_user(&sf->regs, regs, sizeof (*regs));
if (current_thread_info()->fpsaved[0] & FPRS_FEF) {
- err |= save_fpu_state(regs, &sf->fpu_state);
- err |= __put_user((u64)&sf->fpu_state, &sf->fpu_save);
+ __siginfo_fpu_t __user *fpu_save = tail;
+ tail += sizeof(__siginfo_fpu_t);
+ err |= save_fpu_state(regs, fpu_save);
+ err |= __put_user((u64)fpu_save, &sf->fpu_save);
} else {
err |= __put_user(0, &sf->fpu_save);
}
+ if (wsaved) {
+ __siginfo_rwin_t __user *rwin_save = tail;
+ tail += sizeof(__siginfo_rwin_t);
+ err |= save_rwin_state(wsaved, rwin_save);
+ err |= __put_user((u64)rwin_save, &sf->rwin_save);
+ set_thread_wsaved(0);
+ } else {
+ err |= __put_user(0, &sf->rwin_save);
+ }
/* Setup sigaltstack */
err |= __put_user(current->sas_ss_sp, &sf->stack.ss_sp);
@@ -450,10 +429,17 @@
err |= copy_to_user(&sf->mask, oldset, sizeof(sigset_t));
- err |= copy_in_user((u64 __user *)sf,
- (u64 __user *)(regs->u_regs[UREG_FP]+STACK_BIAS),
- sizeof(struct reg_window));
+ if (!wsaved) {
+ err |= copy_in_user((u64 __user *)sf,
+ (u64 __user *)(regs->u_regs[UREG_FP] +
+ STACK_BIAS),
+ sizeof(struct reg_window));
+ } else {
+ struct reg_window *rp;
+ rp = ¤t_thread_info()->reg_window[wsaved - 1];
+ err |= copy_to_user(sf, rp, sizeof(struct reg_window));
+ }
if (info)
err |= copy_siginfo_to_user(&sf->info, info);
else {
diff --git a/arch/sparc/kernel/sigutil.h b/arch/sparc/kernel/sigutil.h
new file mode 100644
index 0000000..d223aa4
--- /dev/null
+++ b/arch/sparc/kernel/sigutil.h
@@ -0,0 +1,9 @@
+#ifndef _SIGUTIL_H
+#define _SIGUTIL_H
+
+int save_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu);
+int restore_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu);
+int save_rwin_state(int wsaved, __siginfo_rwin_t __user *rwin);
+int restore_rwin_state(__siginfo_rwin_t __user *rp);
+
+#endif /* _SIGUTIL_H */
diff --git a/arch/sparc/kernel/sigutil_32.c b/arch/sparc/kernel/sigutil_32.c
new file mode 100644
index 0000000..35c7897
--- /dev/null
+++ b/arch/sparc/kernel/sigutil_32.c
@@ -0,0 +1,120 @@
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/thread_info.h>
+#include <linux/uaccess.h>
+#include <linux/sched.h>
+
+#include <asm/sigcontext.h>
+#include <asm/fpumacro.h>
+#include <asm/ptrace.h>
+
+#include "sigutil.h"
+
+int save_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
+{
+ int err = 0;
+#ifdef CONFIG_SMP
+ if (test_tsk_thread_flag(current, TIF_USEDFPU)) {
+ put_psr(get_psr() | PSR_EF);
+ fpsave(¤t->thread.float_regs[0], ¤t->thread.fsr,
+ ¤t->thread.fpqueue[0], ¤t->thread.fpqdepth);
+ regs->psr &= ~(PSR_EF);
+ clear_tsk_thread_flag(current, TIF_USEDFPU);
+ }
+#else
+ if (current == last_task_used_math) {
+ put_psr(get_psr() | PSR_EF);
+ fpsave(¤t->thread.float_regs[0], ¤t->thread.fsr,
+ ¤t->thread.fpqueue[0], ¤t->thread.fpqdepth);
+ last_task_used_math = NULL;
+ regs->psr &= ~(PSR_EF);
+ }
+#endif
+ err |= __copy_to_user(&fpu->si_float_regs[0],
+ ¤t->thread.float_regs[0],
+ (sizeof(unsigned long) * 32));
+ err |= __put_user(current->thread.fsr, &fpu->si_fsr);
+ err |= __put_user(current->thread.fpqdepth, &fpu->si_fpqdepth);
+ if (current->thread.fpqdepth != 0)
+ err |= __copy_to_user(&fpu->si_fpqueue[0],
+ ¤t->thread.fpqueue[0],
+ ((sizeof(unsigned long) +
+ (sizeof(unsigned long *)))*16));
+ clear_used_math();
+ return err;
+}
+
+int restore_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
+{
+ int err;
+#ifdef CONFIG_SMP
+ if (test_tsk_thread_flag(current, TIF_USEDFPU))
+ regs->psr &= ~PSR_EF;
+#else
+ if (current == last_task_used_math) {
+ last_task_used_math = NULL;
+ regs->psr &= ~PSR_EF;
+ }
+#endif
+ set_used_math();
+ clear_tsk_thread_flag(current, TIF_USEDFPU);
+
+ if (!access_ok(VERIFY_READ, fpu, sizeof(*fpu)))
+ return -EFAULT;
+
+ err = __copy_from_user(¤t->thread.float_regs[0], &fpu->si_float_regs[0],
+ (sizeof(unsigned long) * 32));
+ err |= __get_user(current->thread.fsr, &fpu->si_fsr);
+ err |= __get_user(current->thread.fpqdepth, &fpu->si_fpqdepth);
+ if (current->thread.fpqdepth != 0)
+ err |= __copy_from_user(¤t->thread.fpqueue[0],
+ &fpu->si_fpqueue[0],
+ ((sizeof(unsigned long) +
+ (sizeof(unsigned long *)))*16));
+ return err;
+}
+
+int save_rwin_state(int wsaved, __siginfo_rwin_t __user *rwin)
+{
+ int i, err = __put_user(wsaved, &rwin->wsaved);
+
+ for (i = 0; i < wsaved; i++) {
+ struct reg_window32 *rp;
+ unsigned long fp;
+
+ rp = ¤t_thread_info()->reg_window[i];
+ fp = current_thread_info()->rwbuf_stkptrs[i];
+ err |= copy_to_user(&rwin->reg_window[i], rp,
+ sizeof(struct reg_window32));
+ err |= __put_user(fp, &rwin->rwbuf_stkptrs[i]);
+ }
+ return err;
+}
+
+int restore_rwin_state(__siginfo_rwin_t __user *rp)
+{
+ struct thread_info *t = current_thread_info();
+ int i, wsaved, err;
+
+ __get_user(wsaved, &rp->wsaved);
+ if (wsaved > NSWINS)
+ return -EFAULT;
+
+ err = 0;
+ for (i = 0; i < wsaved; i++) {
+ err |= copy_from_user(&t->reg_window[i],
+ &rp->reg_window[i],
+ sizeof(struct reg_window32));
+ err |= __get_user(t->rwbuf_stkptrs[i],
+ &rp->rwbuf_stkptrs[i]);
+ }
+ if (err)
+ return err;
+
+ t->w_saved = wsaved;
+ synchronize_user_stack();
+ if (t->w_saved)
+ return -EFAULT;
+ return 0;
+
+}
diff --git a/arch/sparc/kernel/sigutil_64.c b/arch/sparc/kernel/sigutil_64.c
new file mode 100644
index 0000000..e7dc508
--- /dev/null
+++ b/arch/sparc/kernel/sigutil_64.c
@@ -0,0 +1,93 @@
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/thread_info.h>
+#include <linux/uaccess.h>
+
+#include <asm/sigcontext.h>
+#include <asm/fpumacro.h>
+#include <asm/ptrace.h>
+
+#include "sigutil.h"
+
+int save_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
+{
+ unsigned long *fpregs = current_thread_info()->fpregs;
+ unsigned long fprs;
+ int err = 0;
+
+ fprs = current_thread_info()->fpsaved[0];
+ if (fprs & FPRS_DL)
+ err |= copy_to_user(&fpu->si_float_regs[0], fpregs,
+ (sizeof(unsigned int) * 32));
+ if (fprs & FPRS_DU)
+ err |= copy_to_user(&fpu->si_float_regs[32], fpregs+16,
+ (sizeof(unsigned int) * 32));
+ err |= __put_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
+ err |= __put_user(current_thread_info()->gsr[0], &fpu->si_gsr);
+ err |= __put_user(fprs, &fpu->si_fprs);
+
+ return err;
+}
+
+int restore_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
+{
+ unsigned long *fpregs = current_thread_info()->fpregs;
+ unsigned long fprs;
+ int err;
+
+ err = __get_user(fprs, &fpu->si_fprs);
+ fprs_write(0);
+ regs->tstate &= ~TSTATE_PEF;
+ if (fprs & FPRS_DL)
+ err |= copy_from_user(fpregs, &fpu->si_float_regs[0],
+ (sizeof(unsigned int) * 32));
+ if (fprs & FPRS_DU)
+ err |= copy_from_user(fpregs+16, &fpu->si_float_regs[32],
+ (sizeof(unsigned int) * 32));
+ err |= __get_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
+ err |= __get_user(current_thread_info()->gsr[0], &fpu->si_gsr);
+ current_thread_info()->fpsaved[0] |= fprs;
+ return err;
+}
+
+int save_rwin_state(int wsaved, __siginfo_rwin_t __user *rwin)
+{
+ int i, err = __put_user(wsaved, &rwin->wsaved);
+
+ for (i = 0; i < wsaved; i++) {
+ struct reg_window *rp = ¤t_thread_info()->reg_window[i];
+ unsigned long fp = current_thread_info()->rwbuf_stkptrs[i];
+
+ err |= copy_to_user(&rwin->reg_window[i], rp,
+ sizeof(struct reg_window));
+ err |= __put_user(fp, &rwin->rwbuf_stkptrs[i]);
+ }
+ return err;
+}
+
+int restore_rwin_state(__siginfo_rwin_t __user *rp)
+{
+ struct thread_info *t = current_thread_info();
+ int i, wsaved, err;
+
+ __get_user(wsaved, &rp->wsaved);
+ if (wsaved > NSWINS)
+ return -EFAULT;
+
+ err = 0;
+ for (i = 0; i < wsaved; i++) {
+ err |= copy_from_user(&t->reg_window[i],
+ &rp->reg_window[i],
+ sizeof(struct reg_window));
+ err |= __get_user(t->rwbuf_stkptrs[i],
+ &rp->rwbuf_stkptrs[i]);
+ }
+ if (err)
+ return err;
+
+ set_thread_wsaved(wsaved);
+ synchronize_user_stack();
+ if (get_thread_wsaved())
+ return -EFAULT;
+ return 0;
+}
diff --git a/arch/x86/include/asm/xen/page.h b/arch/x86/include/asm/xen/page.h
index 64a619d..7ff4669 100644
--- a/arch/x86/include/asm/xen/page.h
+++ b/arch/x86/include/asm/xen/page.h
@@ -39,7 +39,7 @@
((unsigned long)((u64)CONFIG_XEN_MAX_DOMAIN_MEMORY * 1024 * 1024 * 1024 / PAGE_SIZE))
extern unsigned long *machine_to_phys_mapping;
-extern unsigned int machine_to_phys_order;
+extern unsigned long machine_to_phys_nr;
extern unsigned long get_phys_to_machine(unsigned long pfn);
extern bool set_phys_to_machine(unsigned long pfn, unsigned long mfn);
@@ -87,7 +87,7 @@
if (xen_feature(XENFEAT_auto_translated_physmap))
return mfn;
- if (unlikely((mfn >> machine_to_phys_order) != 0)) {
+ if (unlikely(mfn >= machine_to_phys_nr)) {
pfn = ~0;
goto try_override;
}
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index adc66c3..34b1859 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -207,7 +207,6 @@
((start_rip << UVH_IPI_INT_VECTOR_SHFT) >> 12) |
APIC_DM_INIT;
uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
- mdelay(10);
val = (1UL << UVH_IPI_INT_SEND_SHFT) |
(phys_apicid << UVH_IPI_INT_APIC_ID_SHFT) |
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 988724b..ff5790d 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -22,6 +22,8 @@
depends on HAVE_KVM
# for device assignment:
depends on PCI
+ # for TASKSTATS/TASK_DELAY_ACCT:
+ depends on NET
select PREEMPT_NOTIFIERS
select MMU_NOTIFIER
select ANON_INODES
@@ -31,6 +33,7 @@
select KVM_ASYNC_PF
select USER_RETURN_NOTIFIER
select KVM_MMIO
+ select TASKSTATS
select TASK_DELAY_ACCT
---help---
Support hosting fully virtualized guest machines using hardware
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 247aae3..0d17c8c 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -17,6 +17,7 @@
#include <asm/traps.h> /* dotraplinkage, ... */
#include <asm/pgalloc.h> /* pgd_*(), ... */
#include <asm/kmemcheck.h> /* kmemcheck_*(), ... */
+#include <asm/vsyscall.h>
/*
* Page fault error code bits:
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index ae3cb23..c953302 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -360,6 +360,15 @@
}
}
+ /* After the PCI-E bus has been walked and all devices discovered,
+ * configure any settings of the fabric that might be necessary.
+ */
+ if (bus) {
+ struct pci_bus *child;
+ list_for_each_entry(child, &bus->children, node)
+ pcie_bus_configure_settings(child, child->self->pcie_mpss);
+ }
+
if (!bus)
kfree(sd);
diff --git a/arch/x86/platform/olpc/olpc.c b/arch/x86/platform/olpc/olpc.c
index 8b9940e..7cce722 100644
--- a/arch/x86/platform/olpc/olpc.c
+++ b/arch/x86/platform/olpc/olpc.c
@@ -161,13 +161,13 @@
if (inbuf && inlen) {
/* write data to EC */
for (i = 0; i < inlen; i++) {
+ pr_devel("olpc-ec: sending cmd arg 0x%x\n", inbuf[i]);
+ outb(inbuf[i], 0x68);
if (wait_on_ibf(0x6c, 0)) {
printk(KERN_ERR "olpc-ec: timeout waiting for"
" EC accept data!\n");
goto err;
}
- pr_devel("olpc-ec: sending cmd arg 0x%x\n", inbuf[i]);
- outb(inbuf[i], 0x68);
}
}
if (outbuf && outlen) {
diff --git a/arch/x86/vdso/vdso32/sysenter.S b/arch/x86/vdso/vdso32/sysenter.S
index e2800af..e354bce 100644
--- a/arch/x86/vdso/vdso32/sysenter.S
+++ b/arch/x86/vdso/vdso32/sysenter.S
@@ -43,7 +43,7 @@
.space 7,0x90
/* 14: System call restart point is here! (SYSENTER_RETURN-2) */
- jmp .Lenter_kernel
+ int $0x80
/* 16: System call normal return point is here! */
VDSO32_SYSENTER_RETURN: /* Symbol used by sysenter.c via vdso32-syms.h */
pop %ebp
diff --git a/arch/x86/xen/Makefile b/arch/x86/xen/Makefile
index 3326204..add2c2d 100644
--- a/arch/x86/xen/Makefile
+++ b/arch/x86/xen/Makefile
@@ -15,7 +15,7 @@
grant-table.o suspend.o platform-pci-unplug.o \
p2m.o
-obj-$(CONFIG_FTRACE) += trace.o
+obj-$(CONFIG_EVENT_TRACING) += trace.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_PARAVIRT_SPINLOCKS)+= spinlock.o
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index e2345af..2d69617 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -77,8 +77,8 @@
unsigned long *machine_to_phys_mapping = (void *)MACH2PHYS_VIRT_START;
EXPORT_SYMBOL(machine_to_phys_mapping);
-unsigned int machine_to_phys_order;
-EXPORT_SYMBOL(machine_to_phys_order);
+unsigned long machine_to_phys_nr;
+EXPORT_SYMBOL(machine_to_phys_nr);
struct start_info *xen_start_info;
EXPORT_SYMBOL_GPL(xen_start_info);
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 8cce339..20a6142 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1713,15 +1713,19 @@
void __init xen_setup_machphys_mapping(void)
{
struct xen_machphys_mapping mapping;
- unsigned long machine_to_phys_nr_ents;
if (HYPERVISOR_memory_op(XENMEM_machphys_mapping, &mapping) == 0) {
machine_to_phys_mapping = (unsigned long *)mapping.v_start;
- machine_to_phys_nr_ents = mapping.max_mfn + 1;
+ machine_to_phys_nr = mapping.max_mfn + 1;
} else {
- machine_to_phys_nr_ents = MACH2PHYS_NR_ENTRIES;
+ machine_to_phys_nr = MACH2PHYS_NR_ENTRIES;
}
- machine_to_phys_order = fls(machine_to_phys_nr_ents - 1);
+#ifdef CONFIG_X86_32
+ if ((machine_to_phys_mapping + machine_to_phys_nr)
+ < machine_to_phys_mapping)
+ machine_to_phys_nr = (unsigned long *)NULL
+ - machine_to_phys_mapping;
+#endif
}
#ifdef CONFIG_X86_64
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index b4533a8..e79dbb9 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -521,8 +521,6 @@
native_smp_prepare_cpus(max_cpus);
WARN_ON(xen_smp_intr_init(0));
- if (!xen_have_vector_callback)
- return;
xen_init_lock_cpu(0);
xen_init_spinlocks();
}
@@ -546,6 +544,8 @@
void __init xen_hvm_smp_init(void)
{
+ if (!xen_have_vector_callback)
+ return;
smp_ops.smp_prepare_cpus = xen_hvm_smp_prepare_cpus;
smp_ops.smp_send_reschedule = xen_smp_send_reschedule;
smp_ops.cpu_up = xen_hvm_cpu_up;
diff --git a/block/Kconfig b/block/Kconfig
index 60be1e0..e97934e 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -65,6 +65,16 @@
If unsure, say Y.
+config BLK_DEV_BSGLIB
+ bool "Block layer SG support v4 helper lib"
+ default n
+ select BLK_DEV_BSG
+ help
+ Subsystems will normally enable this if needed. Users will not
+ normally need to manually enable this.
+
+ If unsure, say N.
+
config BLK_DEV_INTEGRITY
bool "Block layer data integrity support"
---help---
diff --git a/block/Makefile b/block/Makefile
index 0fec4b3..514c6e4 100644
--- a/block/Makefile
+++ b/block/Makefile
@@ -8,6 +8,7 @@
blk-iopoll.o blk-lib.o ioctl.o genhd.o scsi_ioctl.o
obj-$(CONFIG_BLK_DEV_BSG) += bsg.o
+obj-$(CONFIG_BLK_DEV_BSGLIB) += bsg-lib.o
obj-$(CONFIG_BLK_CGROUP) += blk-cgroup.o
obj-$(CONFIG_BLK_DEV_THROTTLING) += blk-throttle.o
obj-$(CONFIG_IOSCHED_NOOP) += noop-iosched.o
diff --git a/block/blk-core.c b/block/blk-core.c
index b627558..90e1ffd 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1702,6 +1702,7 @@
int blk_insert_cloned_request(struct request_queue *q, struct request *rq)
{
unsigned long flags;
+ int where = ELEVATOR_INSERT_BACK;
if (blk_rq_check_limits(q, rq))
return -EIO;
@@ -1718,7 +1719,10 @@
*/
BUG_ON(blk_queued_rq(rq));
- add_acct_request(q, rq, ELEVATOR_INSERT_BACK);
+ if (rq->cmd_flags & (REQ_FLUSH|REQ_FUA))
+ where = ELEVATOR_INSERT_FLUSH;
+
+ add_acct_request(q, rq, where);
spin_unlock_irqrestore(q->queue_lock, flags);
return 0;
@@ -2275,7 +2279,7 @@
* %false - we are done with this request
* %true - still buffers pending for this request
**/
-static bool __blk_end_bidi_request(struct request *rq, int error,
+bool __blk_end_bidi_request(struct request *rq, int error,
unsigned int nr_bytes, unsigned int bidi_bytes)
{
if (blk_update_bidi_request(rq, error, nr_bytes, bidi_bytes))
diff --git a/block/blk-flush.c b/block/blk-flush.c
index bb21e4c..491eb30 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -95,11 +95,12 @@
{
unsigned int policy = 0;
+ if (blk_rq_sectors(rq))
+ policy |= REQ_FSEQ_DATA;
+
if (fflags & REQ_FLUSH) {
if (rq->cmd_flags & REQ_FLUSH)
policy |= REQ_FSEQ_PREFLUSH;
- if (blk_rq_sectors(rq))
- policy |= REQ_FSEQ_DATA;
if (!(fflags & REQ_FUA) && (rq->cmd_flags & REQ_FUA))
policy |= REQ_FSEQ_POSTFLUSH;
}
@@ -122,7 +123,7 @@
/* make @rq a normal request */
rq->cmd_flags &= ~REQ_FLUSH_SEQ;
- rq->end_io = NULL;
+ rq->end_io = rq->flush.saved_end_io;
}
/**
@@ -300,9 +301,6 @@
unsigned int fflags = q->flush_flags; /* may change, cache */
unsigned int policy = blk_flush_policy(fflags, rq);
- BUG_ON(rq->end_io);
- BUG_ON(!rq->bio || rq->bio != rq->biotail);
-
/*
* @policy now records what operations need to be done. Adjust
* REQ_FLUSH and FUA for the driver.
@@ -312,6 +310,19 @@
rq->cmd_flags &= ~REQ_FUA;
/*
+ * An empty flush handed down from a stacking driver may
+ * translate into nothing if the underlying device does not
+ * advertise a write-back cache. In this case, simply
+ * complete the request.
+ */
+ if (!policy) {
+ __blk_end_bidi_request(rq, 0, 0, 0);
+ return;
+ }
+
+ BUG_ON(!rq->bio || rq->bio != rq->biotail);
+
+ /*
* If there's data but flush is not necessary, the request can be
* processed directly without going through flush machinery. Queue
* for normal execution.
@@ -319,6 +330,7 @@
if ((policy & REQ_FSEQ_DATA) &&
!(policy & (REQ_FSEQ_PREFLUSH | REQ_FSEQ_POSTFLUSH))) {
list_add_tail(&rq->queuelist, &q->queue_head);
+ blk_run_queue_async(q);
return;
}
@@ -329,6 +341,7 @@
memset(&rq->flush, 0, sizeof(rq->flush));
INIT_LIST_HEAD(&rq->flush.list);
rq->cmd_flags |= REQ_FLUSH_SEQ;
+ rq->flush.saved_end_io = rq->end_io; /* Usually NULL */
rq->end_io = flush_data_end_io;
blk_flush_complete_seq(rq, REQ_FSEQ_ACTIONS & ~policy, 0);
diff --git a/block/blk-softirq.c b/block/blk-softirq.c
index 475fab8..58340d0 100644
--- a/block/blk-softirq.c
+++ b/block/blk-softirq.c
@@ -124,6 +124,14 @@
} else
ccpu = cpu;
+ /*
+ * If current CPU and requested CPU are in the same group, running
+ * softirq in current CPU. One might concern this is just like
+ * QUEUE_FLAG_SAME_FORCE, but actually not. blk_complete_request() is
+ * running in interrupt handler, and currently I/O controller doesn't
+ * support multiple interrupts, so current CPU is unique actually. This
+ * avoids IPI sending from current CPU to the first CPU of a group.
+ */
if (ccpu == cpu || ccpu == group_cpu) {
struct list_head *list;
do_local:
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index f6a7941..a19f58c 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -746,7 +746,7 @@
static void throtl_charge_bio(struct throtl_grp *tg, struct bio *bio)
{
bool rw = bio_data_dir(bio);
- bool sync = bio->bi_rw & REQ_SYNC;
+ bool sync = rw_is_sync(bio->bi_rw);
/* Charge the bio to the group */
tg->bytes_disp[rw] += bio->bi_size;
@@ -1150,7 +1150,7 @@
if (tg_no_rule_group(tg, rw)) {
blkiocg_update_dispatch_stats(&tg->blkg, bio->bi_size,
- rw, bio->bi_rw & REQ_SYNC);
+ rw, rw_is_sync(bio->bi_rw));
rcu_read_unlock();
return 0;
}
diff --git a/block/blk.h b/block/blk.h
index d658628..20b900a 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -17,6 +17,8 @@
struct bio *bio);
void blk_dequeue_request(struct request *rq);
void __blk_queue_free_tags(struct request_queue *q);
+bool __blk_end_bidi_request(struct request *rq, int error,
+ unsigned int nr_bytes, unsigned int bidi_bytes);
void blk_rq_timed_out_timer(unsigned long data);
void blk_delete_timer(struct request *);
diff --git a/block/bsg-lib.c b/block/bsg-lib.c
new file mode 100644
index 0000000..6690e6e
--- /dev/null
+++ b/block/bsg-lib.c
@@ -0,0 +1,298 @@
+/*
+ * BSG helper library
+ *
+ * Copyright (C) 2008 James Smart, Emulex Corporation
+ * Copyright (C) 2011 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2011 Mike Christie
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+#include <linux/slab.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <linux/scatterlist.h>
+#include <linux/bsg-lib.h>
+#include <linux/module.h>
+#include <scsi/scsi_cmnd.h>
+
+/**
+ * bsg_destroy_job - routine to teardown/delete a bsg job
+ * @job: bsg_job that is to be torn down
+ */
+static void bsg_destroy_job(struct bsg_job *job)
+{
+ put_device(job->dev); /* release reference for the request */
+
+ kfree(job->request_payload.sg_list);
+ kfree(job->reply_payload.sg_list);
+ kfree(job);
+}
+
+/**
+ * bsg_job_done - completion routine for bsg requests
+ * @job: bsg_job that is complete
+ * @result: job reply result
+ * @reply_payload_rcv_len: length of payload recvd
+ *
+ * The LLD should call this when the bsg job has completed.
+ */
+void bsg_job_done(struct bsg_job *job, int result,
+ unsigned int reply_payload_rcv_len)
+{
+ struct request *req = job->req;
+ struct request *rsp = req->next_rq;
+ int err;
+
+ err = job->req->errors = result;
+ if (err < 0)
+ /* we're only returning the result field in the reply */
+ job->req->sense_len = sizeof(u32);
+ else
+ job->req->sense_len = job->reply_len;
+ /* we assume all request payload was transferred, residual == 0 */
+ req->resid_len = 0;
+
+ if (rsp) {
+ WARN_ON(reply_payload_rcv_len > rsp->resid_len);
+
+ /* set reply (bidi) residual */
+ rsp->resid_len -= min(reply_payload_rcv_len, rsp->resid_len);
+ }
+ blk_complete_request(req);
+}
+EXPORT_SYMBOL_GPL(bsg_job_done);
+
+/**
+ * bsg_softirq_done - softirq done routine for destroying the bsg requests
+ * @rq: BSG request that holds the job to be destroyed
+ */
+static void bsg_softirq_done(struct request *rq)
+{
+ struct bsg_job *job = rq->special;
+
+ blk_end_request_all(rq, rq->errors);
+ bsg_destroy_job(job);
+}
+
+static int bsg_map_buffer(struct bsg_buffer *buf, struct request *req)
+{
+ size_t sz = (sizeof(struct scatterlist) * req->nr_phys_segments);
+
+ BUG_ON(!req->nr_phys_segments);
+
+ buf->sg_list = kzalloc(sz, GFP_KERNEL);
+ if (!buf->sg_list)
+ return -ENOMEM;
+ sg_init_table(buf->sg_list, req->nr_phys_segments);
+ buf->sg_cnt = blk_rq_map_sg(req->q, req, buf->sg_list);
+ buf->payload_len = blk_rq_bytes(req);
+ return 0;
+}
+
+/**
+ * bsg_create_job - create the bsg_job structure for the bsg request
+ * @dev: device that is being sent the bsg request
+ * @req: BSG request that needs a job structure
+ */
+static int bsg_create_job(struct device *dev, struct request *req)
+{
+ struct request *rsp = req->next_rq;
+ struct request_queue *q = req->q;
+ struct bsg_job *job;
+ int ret;
+
+ BUG_ON(req->special);
+
+ job = kzalloc(sizeof(struct bsg_job) + q->bsg_job_size, GFP_KERNEL);
+ if (!job)
+ return -ENOMEM;
+
+ req->special = job;
+ job->req = req;
+ if (q->bsg_job_size)
+ job->dd_data = (void *)&job[1];
+ job->request = req->cmd;
+ job->request_len = req->cmd_len;
+ job->reply = req->sense;
+ job->reply_len = SCSI_SENSE_BUFFERSIZE; /* Size of sense buffer
+ * allocated */
+ if (req->bio) {
+ ret = bsg_map_buffer(&job->request_payload, req);
+ if (ret)
+ goto failjob_rls_job;
+ }
+ if (rsp && rsp->bio) {
+ ret = bsg_map_buffer(&job->reply_payload, rsp);
+ if (ret)
+ goto failjob_rls_rqst_payload;
+ }
+ job->dev = dev;
+ /* take a reference for the request */
+ get_device(job->dev);
+ return 0;
+
+failjob_rls_rqst_payload:
+ kfree(job->request_payload.sg_list);
+failjob_rls_job:
+ kfree(job);
+ return -ENOMEM;
+}
+
+/*
+ * bsg_goose_queue - restart queue in case it was stopped
+ * @q: request q to be restarted
+ */
+void bsg_goose_queue(struct request_queue *q)
+{
+ if (!q)
+ return;
+
+ blk_run_queue_async(q);
+}
+EXPORT_SYMBOL_GPL(bsg_goose_queue);
+
+/**
+ * bsg_request_fn - generic handler for bsg requests
+ * @q: request queue to manage
+ *
+ * On error the create_bsg_job function should return a -Exyz error value
+ * that will be set to the req->errors.
+ *
+ * Drivers/subsys should pass this to the queue init function.
+ */
+void bsg_request_fn(struct request_queue *q)
+{
+ struct device *dev = q->queuedata;
+ struct request *req;
+ struct bsg_job *job;
+ int ret;
+
+ if (!get_device(dev))
+ return;
+
+ while (1) {
+ req = blk_fetch_request(q);
+ if (!req)
+ break;
+ spin_unlock_irq(q->queue_lock);
+
+ ret = bsg_create_job(dev, req);
+ if (ret) {
+ req->errors = ret;
+ blk_end_request_all(req, ret);
+ spin_lock_irq(q->queue_lock);
+ continue;
+ }
+
+ job = req->special;
+ ret = q->bsg_job_fn(job);
+ spin_lock_irq(q->queue_lock);
+ if (ret)
+ break;
+ }
+
+ spin_unlock_irq(q->queue_lock);
+ put_device(dev);
+ spin_lock_irq(q->queue_lock);
+}
+EXPORT_SYMBOL_GPL(bsg_request_fn);
+
+/**
+ * bsg_setup_queue - Create and add the bsg hooks so we can receive requests
+ * @dev: device to attach bsg device to
+ * @q: request queue setup by caller
+ * @name: device to give bsg device
+ * @job_fn: bsg job handler
+ * @dd_job_size: size of LLD data needed for each job
+ *
+ * The caller should have setup the reuqest queue with bsg_request_fn
+ * as the request_fn.
+ */
+int bsg_setup_queue(struct device *dev, struct request_queue *q,
+ char *name, bsg_job_fn *job_fn, int dd_job_size)
+{
+ int ret;
+
+ q->queuedata = dev;
+ q->bsg_job_size = dd_job_size;
+ q->bsg_job_fn = job_fn;
+ queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q);
+ blk_queue_softirq_done(q, bsg_softirq_done);
+ blk_queue_rq_timeout(q, BLK_DEFAULT_SG_TIMEOUT);
+
+ ret = bsg_register_queue(q, dev, name, NULL);
+ if (ret) {
+ printk(KERN_ERR "%s: bsg interface failed to "
+ "initialize - register queue\n", dev->kobj.name);
+ return ret;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(bsg_setup_queue);
+
+/**
+ * bsg_remove_queue - Deletes the bsg dev from the q
+ * @q: the request_queue that is to be torn down.
+ *
+ * Notes:
+ * Before unregistering the queue empty any requests that are blocked
+ */
+void bsg_remove_queue(struct request_queue *q)
+{
+ struct request *req; /* block request */
+ int counts; /* totals for request_list count and starved */
+
+ if (!q)
+ return;
+
+ /* Stop taking in new requests */
+ spin_lock_irq(q->queue_lock);
+ blk_stop_queue(q);
+
+ /* drain all requests in the queue */
+ while (1) {
+ /* need the lock to fetch a request
+ * this may fetch the same reqeust as the previous pass
+ */
+ req = blk_fetch_request(q);
+ /* save requests in use and starved */
+ counts = q->rq.count[0] + q->rq.count[1] +
+ q->rq.starved[0] + q->rq.starved[1];
+ spin_unlock_irq(q->queue_lock);
+ /* any requests still outstanding? */
+ if (counts == 0)
+ break;
+
+ /* This may be the same req as the previous iteration,
+ * always send the blk_end_request_all after a prefetch.
+ * It is not okay to not end the request because the
+ * prefetch started the request.
+ */
+ if (req) {
+ /* return -ENXIO to indicate that this queue is
+ * going away
+ */
+ req->errors = -ENXIO;
+ blk_end_request_all(req, -ENXIO);
+ }
+
+ msleep(200); /* allow bsg to possibly finish */
+ spin_lock_irq(q->queue_lock);
+ }
+ bsg_unregister_queue(q);
+}
+EXPORT_SYMBOL_GPL(bsg_remove_queue);
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 1f96ad6..a33bd43 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -130,6 +130,8 @@
unsigned long slice_end;
long slice_resid;
+ /* pending metadata requests */
+ int meta_pending;
/* number of requests that are on the dispatch list or inside driver */
int dispatched;
@@ -682,6 +684,9 @@
if (rq_is_sync(rq1) != rq_is_sync(rq2))
return rq_is_sync(rq1) ? rq1 : rq2;
+ if ((rq1->cmd_flags ^ rq2->cmd_flags) & REQ_META)
+ return rq1->cmd_flags & REQ_META ? rq1 : rq2;
+
s1 = blk_rq_pos(rq1);
s2 = blk_rq_pos(rq2);
@@ -1209,6 +1214,9 @@
hlist_del_init(&cfqg->cfqd_node);
+ BUG_ON(cfqd->nr_blkcg_linked_grps <= 0);
+ cfqd->nr_blkcg_linked_grps--;
+
/*
* Put the reference taken at the time of creation so that when all
* queues are gone, group can be destroyed.
@@ -1604,6 +1612,10 @@
cfqq->cfqd->rq_queued--;
cfq_blkiocg_update_io_remove_stats(&(RQ_CFQG(rq))->blkg,
rq_data_dir(rq), rq_is_sync(rq));
+ if (rq->cmd_flags & REQ_META) {
+ WARN_ON(!cfqq->meta_pending);
+ cfqq->meta_pending--;
+ }
}
static int cfq_merge(struct request_queue *q, struct request **req,
@@ -3357,6 +3369,13 @@
return true;
/*
+ * So both queues are sync. Let the new request get disk time if
+ * it's a metadata request and the current queue is doing regular IO.
+ */
+ if ((rq->cmd_flags & REQ_META) && !cfqq->meta_pending)
+ return true;
+
+ /*
* Allow an RT request to pre-empt an ongoing non-RT cfqq timeslice.
*/
if (cfq_class_rt(new_cfqq) && !cfq_class_rt(cfqq))
@@ -3420,6 +3439,8 @@
struct cfq_io_context *cic = RQ_CIC(rq);
cfqd->rq_queued++;
+ if (rq->cmd_flags & REQ_META)
+ cfqq->meta_pending++;
cfq_update_io_thinktime(cfqd, cfqq, cic);
cfq_update_io_seektime(cfqd, cfqq, rq);
diff --git a/block/genhd.c b/block/genhd.c
index 5cb51c5..e2f6790 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1146,17 +1146,17 @@
cpu = part_stat_lock();
part_round_stats(cpu, hd);
part_stat_unlock();
- seq_printf(seqf, "%4d %7d %s %lu %lu %llu "
- "%u %lu %lu %llu %u %u %u %u\n",
+ seq_printf(seqf, "%4d %7d %s %lu %lu %lu "
+ "%u %lu %lu %lu %u %u %u %u\n",
MAJOR(part_devt(hd)), MINOR(part_devt(hd)),
disk_name(gp, hd->partno, buf),
part_stat_read(hd, ios[READ]),
part_stat_read(hd, merges[READ]),
- (unsigned long long)part_stat_read(hd, sectors[READ]),
+ part_stat_read(hd, sectors[READ]),
jiffies_to_msecs(part_stat_read(hd, ticks[READ])),
part_stat_read(hd, ios[WRITE]),
part_stat_read(hd, merges[WRITE]),
- (unsigned long long)part_stat_read(hd, sectors[WRITE]),
+ part_stat_read(hd, sectors[WRITE]),
jiffies_to_msecs(part_stat_read(hd, ticks[WRITE])),
part_in_flight(hd),
jiffies_to_msecs(part_stat_read(hd, io_ticks)),
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index ca3e6be..5987e0b 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -468,6 +468,15 @@
interface card. This is not required for ICS partition support.
If you are unsure, say N to this.
+config PATA_IMX
+ tristate "PATA support for Freescale iMX"
+ depends on ARCH_MXC
+ help
+ This option enables support for the PATA host available on Freescale
+ iMX SoCs.
+
+ If unsure, say N.
+
config PATA_IT8213
tristate "IT8213 PATA support (Experimental)"
depends on PCI && EXPERIMENTAL
diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile
index 8ac64e1..9550d69 100644
--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
@@ -48,6 +48,7 @@
obj-$(CONFIG_PATA_HPT3X2N) += pata_hpt3x2n.o
obj-$(CONFIG_PATA_HPT3X3) += pata_hpt3x3.o
obj-$(CONFIG_PATA_ICSIDE) += pata_icside.o
+obj-$(CONFIG_PATA_IMX) += pata_imx.o
obj-$(CONFIG_PATA_IT8213) += pata_it8213.o
obj-$(CONFIG_PATA_IT821X) += pata_it821x.o
obj-$(CONFIG_PATA_JMICRON) += pata_jmicron.o
diff --git a/drivers/ata/pata_imx.c b/drivers/ata/pata_imx.c
new file mode 100644
index 0000000..ca9d9ca
--- /dev/null
+++ b/drivers/ata/pata_imx.c
@@ -0,0 +1,253 @@
+/*
+ * Freescale iMX PATA driver
+ *
+ * Copyright (C) 2011 Arnaud Patard <arnaud.patard@rtp-net.org>
+ *
+ * Based on pata_platform - Copyright (C) 2006 - 2007 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * TODO:
+ * - dmaengine support
+ * - check if timing stuff needed
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/blkdev.h>
+#include <scsi/scsi_host.h>
+#include <linux/ata.h>
+#include <linux/libata.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+
+#define DRV_NAME "pata_imx"
+
+#define PATA_IMX_ATA_CONTROL 0x24
+#define PATA_IMX_ATA_CTRL_FIFO_RST_B (1<<7)
+#define PATA_IMX_ATA_CTRL_ATA_RST_B (1<<6)
+#define PATA_IMX_ATA_CTRL_IORDY_EN (1<<0)
+#define PATA_IMX_ATA_INT_EN 0x2C
+#define PATA_IMX_ATA_INTR_ATA_INTRQ2 (1<<3)
+#define PATA_IMX_DRIVE_DATA 0xA0
+#define PATA_IMX_DRIVE_CONTROL 0xD8
+
+struct pata_imx_priv {
+ struct clk *clk;
+ /* timings/interrupt/control regs */
+ u8 *host_regs;
+ u32 ata_ctl;
+};
+
+static int pata_imx_set_mode(struct ata_link *link, struct ata_device **unused)
+{
+ struct ata_device *dev;
+ struct ata_port *ap = link->ap;
+ struct pata_imx_priv *priv = ap->host->private_data;
+ u32 val;
+
+ ata_for_each_dev(dev, link, ENABLED) {
+ dev->pio_mode = dev->xfer_mode = XFER_PIO_0;
+ dev->xfer_shift = ATA_SHIFT_PIO;
+ dev->flags |= ATA_DFLAG_PIO;
+
+ val = __raw_readl(priv->host_regs + PATA_IMX_ATA_CONTROL);
+ if (ata_pio_need_iordy(dev))
+ val |= PATA_IMX_ATA_CTRL_IORDY_EN;
+ else
+ val &= ~PATA_IMX_ATA_CTRL_IORDY_EN;
+ __raw_writel(val, priv->host_regs + PATA_IMX_ATA_CONTROL);
+
+ ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
+ }
+ return 0;
+}
+
+static struct scsi_host_template pata_imx_sht = {
+ ATA_PIO_SHT(DRV_NAME),
+};
+
+static struct ata_port_operations pata_imx_port_ops = {
+ .inherits = &ata_sff_port_ops,
+ .sff_data_xfer = ata_sff_data_xfer_noirq,
+ .cable_detect = ata_cable_unknown,
+ .set_mode = pata_imx_set_mode,
+};
+
+static void pata_imx_setup_port(struct ata_ioports *ioaddr)
+{
+ /* Fixup the port shift for platforms that need it */
+ ioaddr->data_addr = ioaddr->cmd_addr + (ATA_REG_DATA << 2);
+ ioaddr->error_addr = ioaddr->cmd_addr + (ATA_REG_ERR << 2);
+ ioaddr->feature_addr = ioaddr->cmd_addr + (ATA_REG_FEATURE << 2);
+ ioaddr->nsect_addr = ioaddr->cmd_addr + (ATA_REG_NSECT << 2);
+ ioaddr->lbal_addr = ioaddr->cmd_addr + (ATA_REG_LBAL << 2);
+ ioaddr->lbam_addr = ioaddr->cmd_addr + (ATA_REG_LBAM << 2);
+ ioaddr->lbah_addr = ioaddr->cmd_addr + (ATA_REG_LBAH << 2);
+ ioaddr->device_addr = ioaddr->cmd_addr + (ATA_REG_DEVICE << 2);
+ ioaddr->status_addr = ioaddr->cmd_addr + (ATA_REG_STATUS << 2);
+ ioaddr->command_addr = ioaddr->cmd_addr + (ATA_REG_CMD << 2);
+}
+
+static int __devinit pata_imx_probe(struct platform_device *pdev)
+{
+ struct ata_host *host;
+ struct ata_port *ap;
+ struct pata_imx_priv *priv;
+ int irq = 0;
+ struct resource *io_res;
+
+ io_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (io_res == NULL)
+ return -EINVAL;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq <= 0)
+ return -EINVAL;
+
+ priv = devm_kzalloc(&pdev->dev,
+ sizeof(struct pata_imx_priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(priv->clk)) {
+ dev_err(&pdev->dev, "Failed to get clock\n");
+ return PTR_ERR(priv->clk);
+ }
+
+ clk_enable(priv->clk);
+
+ host = ata_host_alloc(&pdev->dev, 1);
+ if (!host)
+ goto free_priv;
+
+ host->private_data = priv;
+ ap = host->ports[0];
+
+ ap->ops = &pata_imx_port_ops;
+ ap->pio_mask = ATA_PIO0;
+ ap->flags |= ATA_FLAG_SLAVE_POSS;
+
+ priv->host_regs = devm_ioremap(&pdev->dev, io_res->start,
+ resource_size(io_res));
+ if (!priv->host_regs) {
+ dev_err(&pdev->dev, "failed to map IO/CTL base\n");
+ goto free_priv;
+ }
+
+ ap->ioaddr.cmd_addr = priv->host_regs + PATA_IMX_DRIVE_DATA;
+ ap->ioaddr.ctl_addr = priv->host_regs + PATA_IMX_DRIVE_CONTROL;
+
+ ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;
+
+ pata_imx_setup_port(&ap->ioaddr);
+
+ ata_port_desc(ap, "cmd 0x%llx ctl 0x%llx",
+ (unsigned long long)io_res->start + PATA_IMX_DRIVE_DATA,
+ (unsigned long long)io_res->start + PATA_IMX_DRIVE_CONTROL);
+
+ /* deassert resets */
+ __raw_writel(PATA_IMX_ATA_CTRL_FIFO_RST_B |
+ PATA_IMX_ATA_CTRL_ATA_RST_B,
+ priv->host_regs + PATA_IMX_ATA_CONTROL);
+ /* enable interrupts */
+ __raw_writel(PATA_IMX_ATA_INTR_ATA_INTRQ2,
+ priv->host_regs + PATA_IMX_ATA_INT_EN);
+
+ /* activate */
+ return ata_host_activate(host, irq, ata_sff_interrupt, 0,
+ &pata_imx_sht);
+
+free_priv:
+ clk_disable(priv->clk);
+ clk_put(priv->clk);
+ return -ENOMEM;
+}
+
+static int __devexit pata_imx_remove(struct platform_device *pdev)
+{
+ struct ata_host *host = dev_get_drvdata(&pdev->dev);
+ struct pata_imx_priv *priv = host->private_data;
+
+ ata_host_detach(host);
+
+ __raw_writel(0, priv->host_regs + PATA_IMX_ATA_INT_EN);
+
+ clk_disable(priv->clk);
+ clk_put(priv->clk);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int pata_imx_suspend(struct device *dev)
+{
+ struct ata_host *host = dev_get_drvdata(dev);
+ struct pata_imx_priv *priv = host->private_data;
+ int ret;
+
+ ret = ata_host_suspend(host, PMSG_SUSPEND);
+ if (!ret) {
+ __raw_writel(0, priv->host_regs + PATA_IMX_ATA_INT_EN);
+ priv->ata_ctl =
+ __raw_readl(priv->host_regs + PATA_IMX_ATA_CONTROL);
+ clk_disable(priv->clk);
+ }
+
+ return ret;
+}
+
+static int pata_imx_resume(struct device *dev)
+{
+ struct ata_host *host = dev_get_drvdata(dev);
+ struct pata_imx_priv *priv = host->private_data;
+
+ clk_enable(priv->clk);
+
+ __raw_writel(priv->ata_ctl, priv->host_regs + PATA_IMX_ATA_CONTROL);
+
+ __raw_writel(PATA_IMX_ATA_INTR_ATA_INTRQ2,
+ priv->host_regs + PATA_IMX_ATA_INT_EN);
+
+ ata_host_resume(host);
+
+ return 0;
+}
+
+static const struct dev_pm_ops pata_imx_pm_ops = {
+ .suspend = pata_imx_suspend,
+ .resume = pata_imx_resume,
+};
+#endif
+
+static struct platform_driver pata_imx_driver = {
+ .probe = pata_imx_probe,
+ .remove = __devexit_p(pata_imx_remove),
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+#ifdef CONFIG_PM
+ .pm = &pata_imx_pm_ops,
+#endif
+ },
+};
+
+static int __init pata_imx_init(void)
+{
+ return platform_driver_register(&pata_imx_driver);
+}
+
+static void __exit pata_imx_exit(void)
+{
+ platform_driver_unregister(&pata_imx_driver);
+}
+module_init(pata_imx_init);
+module_exit(pata_imx_exit);
+
+MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
+MODULE_DESCRIPTION("low-level driver for iMX PATA");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c
index 65e4be6..8e9f504 100644
--- a/drivers/ata/pata_via.c
+++ b/drivers/ata/pata_via.c
@@ -124,6 +124,17 @@
{ NULL }
};
+static const struct dmi_system_id no_atapi_dma_dmi_table[] = {
+ {
+ .ident = "AVERATEC 3200",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "AVERATEC"),
+ DMI_MATCH(DMI_BOARD_NAME, "3200"),
+ },
+ },
+ { }
+};
+
struct via_port {
u8 cached_device;
};
@@ -355,6 +366,13 @@
mask &= ~ ATA_MASK_UDMA;
}
}
+
+ if (dev->class == ATA_DEV_ATAPI &&
+ dmi_check_system(no_atapi_dma_dmi_table)) {
+ ata_dev_warn(dev, "controller locks up on ATAPI DMA, forcing PIO\n");
+ mask &= ATA_MASK_PIO;
+ }
+
return mask;
}
diff --git a/drivers/ata/sata_dwc_460ex.c b/drivers/ata/sata_dwc_460ex.c
index 0a9a774..5c42374 100644
--- a/drivers/ata/sata_dwc_460ex.c
+++ b/drivers/ata/sata_dwc_460ex.c
@@ -1329,7 +1329,7 @@
dev_err(ap->dev, "%s: dma_alloc_coherent failed\n",
__func__);
err = -ENOMEM;
- goto CLEANUP;
+ goto CLEANUP_ALLOC;
}
}
@@ -1349,15 +1349,13 @@
/* Clear any error bits before libata starts issuing commands */
clear_serror();
ap->private_data = hsdevp;
+ dev_dbg(ap->dev, "%s: done\n", __func__);
+ return 0;
+CLEANUP_ALLOC:
+ kfree(hsdevp);
CLEANUP:
- if (err) {
- sata_dwc_port_stop(ap);
- dev_dbg(ap->dev, "%s: fail\n", __func__);
- } else {
- dev_dbg(ap->dev, "%s: done\n", __func__);
- }
-
+ dev_dbg(ap->dev, "%s: fail. ap->id = %d\n", __func__, ap->print_id);
return err;
}
diff --git a/drivers/ata/sata_sil.c b/drivers/ata/sata_sil.c
index 98c1d78..9dfb40b 100644
--- a/drivers/ata/sata_sil.c
+++ b/drivers/ata/sata_sil.c
@@ -438,7 +438,7 @@
u8 status;
if (unlikely(bmdma2 & SIL_DMA_SATA_IRQ)) {
- u32 serror;
+ u32 serror = 0xffffffff;
/* SIEN doesn't mask SATA IRQs on some 3112s. Those
* controllers continue to assert IRQ as long as
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index bbb03e6..06ed6b4 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -521,11 +521,6 @@
if (!firmware_p)
return -EINVAL;
- if (WARN_ON(usermodehelper_is_disabled())) {
- dev_err(device, "firmware: %s will not be loaded\n", name);
- return -EBUSY;
- }
-
*firmware_p = firmware = kzalloc(sizeof(*firmware), GFP_KERNEL);
if (!firmware) {
dev_err(device, "%s: kmalloc(struct firmware) failed\n",
@@ -539,6 +534,12 @@
return 0;
}
+ if (WARN_ON(usermodehelper_is_disabled())) {
+ dev_err(device, "firmware: %s will not be loaded\n", name);
+ retval = -EBUSY;
+ goto out;
+ }
+
if (uevent)
dev_dbg(device, "firmware: requesting %s\n", name);
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index e18566a..1c37457 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -460,6 +460,21 @@
return 0;
}
+/**
+ * pm_genpd_poweroff_unused - Power off all PM domains with no devices in use.
+ */
+void pm_genpd_poweroff_unused(void)
+{
+ struct generic_pm_domain *genpd;
+
+ mutex_lock(&gpd_list_lock);
+
+ list_for_each_entry(genpd, &gpd_list, gpd_list_node)
+ genpd_queue_power_off_work(genpd);
+
+ mutex_unlock(&gpd_list_lock);
+}
+
#else
static inline void genpd_power_off_work_fn(struct work_struct *work) {}
@@ -1255,18 +1270,3 @@
list_add(&genpd->gpd_list_node, &gpd_list);
mutex_unlock(&gpd_list_lock);
}
-
-/**
- * pm_genpd_poweroff_unused - Power off all PM domains with no devices in use.
- */
-void pm_genpd_poweroff_unused(void)
-{
- struct generic_pm_domain *genpd;
-
- mutex_lock(&gpd_list_lock);
-
- list_for_each_entry(genpd, &gpd_list, gpd_list_node)
- genpd_queue_power_off_work(genpd);
-
- mutex_unlock(&gpd_list_lock);
-}
diff --git a/drivers/base/regmap/regmap-i2c.c b/drivers/base/regmap/regmap-i2c.c
index c2231ff..c4f7a45 100644
--- a/drivers/base/regmap/regmap-i2c.c
+++ b/drivers/base/regmap/regmap-i2c.c
@@ -113,3 +113,4 @@
}
EXPORT_SYMBOL_GPL(regmap_init_i2c);
+MODULE_LICENSE("GPL");
diff --git a/drivers/base/regmap/regmap-spi.c b/drivers/base/regmap/regmap-spi.c
index 4deba06..f839694 100644
--- a/drivers/base/regmap/regmap-spi.c
+++ b/drivers/base/regmap/regmap-spi.c
@@ -13,6 +13,7 @@
#include <linux/regmap.h>
#include <linux/spi/spi.h>
#include <linux/init.h>
+#include <linux/module.h>
static int regmap_spi_write(struct device *dev, const void *data, size_t count)
{
@@ -70,3 +71,5 @@
return regmap_init(&spi->dev, ®map_spi, config);
}
EXPORT_SYMBOL_GPL(regmap_init_spi);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index cf3565c..0eef4da 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -317,7 +317,7 @@
u8[0] |= map->bus->read_flag_mask;
ret = map->bus->read(map->dev, map->work_buf, map->format.reg_bytes,
- val, map->format.val_bytes);
+ val, val_len);
if (ret != 0)
return ret;
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 717d6e4..6f07ec1 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -256,6 +256,21 @@
Most users will answer N here.
+config BLK_DEV_LOOP_MIN_COUNT
+ int "Number of loop devices to pre-create at init time"
+ depends on BLK_DEV_LOOP
+ default 8
+ help
+ Static number of loop devices to be unconditionally pre-created
+ at init time.
+
+ This default value can be overwritten on the kernel command
+ line or with module-parameter loop.max_loop.
+
+ The historic default is 8. If a late 2011 version of losetup(8)
+ is used, it can be set to 0, since needed loop devices can be
+ dynamically allocated with the /dev/loop-control interface.
+
config BLK_DEV_CRYPTOLOOP
tristate "Cryptoloop Support"
select CRYPTO
@@ -471,7 +486,7 @@
in another domain which drives the actual block device.
config XEN_BLKDEV_BACKEND
- tristate "Block-device backend driver"
+ tristate "Xen block-device backend driver"
depends on XEN_BACKEND
help
The block-device backend driver allows the kernel to export its
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 515bcd9..0feab26 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -1829,10 +1829,10 @@
/* silently ignore cpu mask on UP kernel */
if (nr_cpu_ids > 1 && sc.cpu_mask[0] != 0) {
- err = __bitmap_parse(sc.cpu_mask, 32, 0,
+ err = bitmap_parse(sc.cpu_mask, 32,
cpumask_bits(new_cpu_mask), nr_cpu_ids);
if (err) {
- dev_warn(DEV, "__bitmap_parse() failed with %d\n", err);
+ dev_warn(DEV, "bitmap_parse() failed with %d\n", err);
retcode = ERR_CPU_MASK_PARSE;
goto fail;
}
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 76c8da7..4720c7a 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -75,11 +75,11 @@
#include <linux/kthread.h>
#include <linux/splice.h>
#include <linux/sysfs.h>
-
+#include <linux/miscdevice.h>
#include <asm/uaccess.h>
-static LIST_HEAD(loop_devices);
-static DEFINE_MUTEX(loop_devices_mutex);
+static DEFINE_IDR(loop_index_idr);
+static DEFINE_MUTEX(loop_index_mutex);
static int max_part;
static int part_shift;
@@ -722,17 +722,10 @@
static ssize_t loop_attr_show(struct device *dev, char *page,
ssize_t (*callback)(struct loop_device *, char *))
{
- struct loop_device *l, *lo = NULL;
+ struct gendisk *disk = dev_to_disk(dev);
+ struct loop_device *lo = disk->private_data;
- mutex_lock(&loop_devices_mutex);
- list_for_each_entry(l, &loop_devices, lo_list)
- if (disk_to_dev(l->lo_disk) == dev) {
- lo = l;
- break;
- }
- mutex_unlock(&loop_devices_mutex);
-
- return lo ? callback(lo, page) : -EIO;
+ return callback(lo, page);
}
#define LOOP_ATTR_RO(_name) \
@@ -750,10 +743,10 @@
ssize_t ret;
char *p = NULL;
- mutex_lock(&lo->lo_ctl_mutex);
+ spin_lock_irq(&lo->lo_lock);
if (lo->lo_backing_file)
p = d_path(&lo->lo_backing_file->f_path, buf, PAGE_SIZE - 1);
- mutex_unlock(&lo->lo_ctl_mutex);
+ spin_unlock_irq(&lo->lo_lock);
if (IS_ERR_OR_NULL(p))
ret = PTR_ERR(p);
@@ -1007,7 +1000,9 @@
kthread_stop(lo->lo_thread);
+ spin_lock_irq(&lo->lo_lock);
lo->lo_backing_file = NULL;
+ spin_unlock_irq(&lo->lo_lock);
loop_release_xfer(lo);
lo->transfer = NULL;
@@ -1485,13 +1480,22 @@
static int lo_open(struct block_device *bdev, fmode_t mode)
{
- struct loop_device *lo = bdev->bd_disk->private_data;
+ struct loop_device *lo;
+ int err = 0;
+
+ mutex_lock(&loop_index_mutex);
+ lo = bdev->bd_disk->private_data;
+ if (!lo) {
+ err = -ENXIO;
+ goto out;
+ }
mutex_lock(&lo->lo_ctl_mutex);
lo->lo_refcnt++;
mutex_unlock(&lo->lo_ctl_mutex);
-
- return 0;
+out:
+ mutex_unlock(&loop_index_mutex);
+ return err;
}
static int lo_release(struct gendisk *disk, fmode_t mode)
@@ -1557,40 +1561,71 @@
return 0;
}
+static int unregister_transfer_cb(int id, void *ptr, void *data)
+{
+ struct loop_device *lo = ptr;
+ struct loop_func_table *xfer = data;
+
+ mutex_lock(&lo->lo_ctl_mutex);
+ if (lo->lo_encryption == xfer)
+ loop_release_xfer(lo);
+ mutex_unlock(&lo->lo_ctl_mutex);
+ return 0;
+}
+
int loop_unregister_transfer(int number)
{
unsigned int n = number;
- struct loop_device *lo;
struct loop_func_table *xfer;
if (n == 0 || n >= MAX_LO_CRYPT || (xfer = xfer_funcs[n]) == NULL)
return -EINVAL;
xfer_funcs[n] = NULL;
-
- list_for_each_entry(lo, &loop_devices, lo_list) {
- mutex_lock(&lo->lo_ctl_mutex);
-
- if (lo->lo_encryption == xfer)
- loop_release_xfer(lo);
-
- mutex_unlock(&lo->lo_ctl_mutex);
- }
-
+ idr_for_each(&loop_index_idr, &unregister_transfer_cb, xfer);
return 0;
}
EXPORT_SYMBOL(loop_register_transfer);
EXPORT_SYMBOL(loop_unregister_transfer);
-static struct loop_device *loop_alloc(int i)
+static int loop_add(struct loop_device **l, int i)
{
struct loop_device *lo;
struct gendisk *disk;
+ int err;
lo = kzalloc(sizeof(*lo), GFP_KERNEL);
- if (!lo)
+ if (!lo) {
+ err = -ENOMEM;
goto out;
+ }
+
+ err = idr_pre_get(&loop_index_idr, GFP_KERNEL);
+ if (err < 0)
+ goto out_free_dev;
+
+ if (i >= 0) {
+ int m;
+
+ /* create specific i in the index */
+ err = idr_get_new_above(&loop_index_idr, lo, i, &m);
+ if (err >= 0 && i != m) {
+ idr_remove(&loop_index_idr, m);
+ err = -EEXIST;
+ }
+ } else if (i == -1) {
+ int m;
+
+ /* get next free nr */
+ err = idr_get_new(&loop_index_idr, lo, &m);
+ if (err >= 0)
+ i = m;
+ } else {
+ err = -EINVAL;
+ }
+ if (err < 0)
+ goto out_free_dev;
lo->lo_queue = blk_alloc_queue(GFP_KERNEL);
if (!lo->lo_queue)
@@ -1611,81 +1646,158 @@
disk->private_data = lo;
disk->queue = lo->lo_queue;
sprintf(disk->disk_name, "loop%d", i);
- return lo;
+ add_disk(disk);
+ *l = lo;
+ return lo->lo_number;
out_free_queue:
blk_cleanup_queue(lo->lo_queue);
out_free_dev:
kfree(lo);
out:
- return NULL;
+ return err;
}
-static void loop_free(struct loop_device *lo)
+static void loop_remove(struct loop_device *lo)
{
+ del_gendisk(lo->lo_disk);
blk_cleanup_queue(lo->lo_queue);
put_disk(lo->lo_disk);
- list_del(&lo->lo_list);
kfree(lo);
}
-static struct loop_device *loop_init_one(int i)
+static int find_free_cb(int id, void *ptr, void *data)
{
- struct loop_device *lo;
+ struct loop_device *lo = ptr;
+ struct loop_device **l = data;
- list_for_each_entry(lo, &loop_devices, lo_list) {
- if (lo->lo_number == i)
- return lo;
+ if (lo->lo_state == Lo_unbound) {
+ *l = lo;
+ return 1;
}
-
- lo = loop_alloc(i);
- if (lo) {
- add_disk(lo->lo_disk);
- list_add_tail(&lo->lo_list, &loop_devices);
- }
- return lo;
+ return 0;
}
-static void loop_del_one(struct loop_device *lo)
+static int loop_lookup(struct loop_device **l, int i)
{
- del_gendisk(lo->lo_disk);
- loop_free(lo);
+ struct loop_device *lo;
+ int ret = -ENODEV;
+
+ if (i < 0) {
+ int err;
+
+ err = idr_for_each(&loop_index_idr, &find_free_cb, &lo);
+ if (err == 1) {
+ *l = lo;
+ ret = lo->lo_number;
+ }
+ goto out;
+ }
+
+ /* lookup and return a specific i */
+ lo = idr_find(&loop_index_idr, i);
+ if (lo) {
+ *l = lo;
+ ret = lo->lo_number;
+ }
+out:
+ return ret;
}
static struct kobject *loop_probe(dev_t dev, int *part, void *data)
{
struct loop_device *lo;
struct kobject *kobj;
+ int err;
- mutex_lock(&loop_devices_mutex);
- lo = loop_init_one(MINOR(dev) >> part_shift);
- kobj = lo ? get_disk(lo->lo_disk) : ERR_PTR(-ENOMEM);
- mutex_unlock(&loop_devices_mutex);
+ mutex_lock(&loop_index_mutex);
+ err = loop_lookup(&lo, MINOR(dev) >> part_shift);
+ if (err < 0)
+ err = loop_add(&lo, MINOR(dev) >> part_shift);
+ if (err < 0)
+ kobj = ERR_PTR(err);
+ else
+ kobj = get_disk(lo->lo_disk);
+ mutex_unlock(&loop_index_mutex);
*part = 0;
return kobj;
}
+static long loop_control_ioctl(struct file *file, unsigned int cmd,
+ unsigned long parm)
+{
+ struct loop_device *lo;
+ int ret = -ENOSYS;
+
+ mutex_lock(&loop_index_mutex);
+ switch (cmd) {
+ case LOOP_CTL_ADD:
+ ret = loop_lookup(&lo, parm);
+ if (ret >= 0) {
+ ret = -EEXIST;
+ break;
+ }
+ ret = loop_add(&lo, parm);
+ break;
+ case LOOP_CTL_REMOVE:
+ ret = loop_lookup(&lo, parm);
+ if (ret < 0)
+ break;
+ mutex_lock(&lo->lo_ctl_mutex);
+ if (lo->lo_state != Lo_unbound) {
+ ret = -EBUSY;
+ mutex_unlock(&lo->lo_ctl_mutex);
+ break;
+ }
+ if (lo->lo_refcnt > 0) {
+ ret = -EBUSY;
+ mutex_unlock(&lo->lo_ctl_mutex);
+ break;
+ }
+ lo->lo_disk->private_data = NULL;
+ mutex_unlock(&lo->lo_ctl_mutex);
+ idr_remove(&loop_index_idr, lo->lo_number);
+ loop_remove(lo);
+ break;
+ case LOOP_CTL_GET_FREE:
+ ret = loop_lookup(&lo, -1);
+ if (ret >= 0)
+ break;
+ ret = loop_add(&lo, -1);
+ }
+ mutex_unlock(&loop_index_mutex);
+
+ return ret;
+}
+
+static const struct file_operations loop_ctl_fops = {
+ .open = nonseekable_open,
+ .unlocked_ioctl = loop_control_ioctl,
+ .compat_ioctl = loop_control_ioctl,
+ .owner = THIS_MODULE,
+ .llseek = noop_llseek,
+};
+
+static struct miscdevice loop_misc = {
+ .minor = LOOP_CTRL_MINOR,
+ .name = "loop-control",
+ .fops = &loop_ctl_fops,
+};
+
+MODULE_ALIAS_MISCDEV(LOOP_CTRL_MINOR);
+MODULE_ALIAS("devname:loop-control");
+
static int __init loop_init(void)
{
int i, nr;
unsigned long range;
- struct loop_device *lo, *next;
+ struct loop_device *lo;
+ int err;
- /*
- * loop module now has a feature to instantiate underlying device
- * structure on-demand, provided that there is an access dev node.
- * However, this will not work well with user space tool that doesn't
- * know about such "feature". In order to not break any existing
- * tool, we do the following:
- *
- * (1) if max_loop is specified, create that many upfront, and this
- * also becomes a hard limit.
- * (2) if max_loop is not specified, create 8 loop device on module
- * load, user can further extend loop device by create dev node
- * themselves and have kernel automatically instantiate actual
- * device on-demand.
- */
+ err = misc_register(&loop_misc);
+ if (err < 0)
+ return err;
part_shift = 0;
if (max_part > 0) {
@@ -1708,57 +1820,60 @@
if (max_loop > 1UL << (MINORBITS - part_shift))
return -EINVAL;
+ /*
+ * If max_loop is specified, create that many devices upfront.
+ * This also becomes a hard limit. If max_loop is not specified,
+ * create CONFIG_BLK_DEV_LOOP_MIN_COUNT loop devices at module
+ * init time. Loop devices can be requested on-demand with the
+ * /dev/loop-control interface, or be instantiated by accessing
+ * a 'dead' device node.
+ */
if (max_loop) {
nr = max_loop;
range = max_loop << part_shift;
} else {
- nr = 8;
+ nr = CONFIG_BLK_DEV_LOOP_MIN_COUNT;
range = 1UL << MINORBITS;
}
if (register_blkdev(LOOP_MAJOR, "loop"))
return -EIO;
- for (i = 0; i < nr; i++) {
- lo = loop_alloc(i);
- if (!lo)
- goto Enomem;
- list_add_tail(&lo->lo_list, &loop_devices);
- }
-
- /* point of no return */
-
- list_for_each_entry(lo, &loop_devices, lo_list)
- add_disk(lo->lo_disk);
-
blk_register_region(MKDEV(LOOP_MAJOR, 0), range,
THIS_MODULE, loop_probe, NULL, NULL);
+ /* pre-create number of devices given by config or max_loop */
+ mutex_lock(&loop_index_mutex);
+ for (i = 0; i < nr; i++)
+ loop_add(&lo, i);
+ mutex_unlock(&loop_index_mutex);
+
printk(KERN_INFO "loop: module loaded\n");
return 0;
+}
-Enomem:
- printk(KERN_INFO "loop: out of memory\n");
+static int loop_exit_cb(int id, void *ptr, void *data)
+{
+ struct loop_device *lo = ptr;
- list_for_each_entry_safe(lo, next, &loop_devices, lo_list)
- loop_free(lo);
-
- unregister_blkdev(LOOP_MAJOR, "loop");
- return -ENOMEM;
+ loop_remove(lo);
+ return 0;
}
static void __exit loop_exit(void)
{
unsigned long range;
- struct loop_device *lo, *next;
range = max_loop ? max_loop << part_shift : 1UL << MINORBITS;
- list_for_each_entry_safe(lo, next, &loop_devices, lo_list)
- loop_del_one(lo);
+ idr_for_each(&loop_index_idr, &loop_exit_cb, NULL);
+ idr_remove_all(&loop_index_idr);
+ idr_destroy(&loop_index_idr);
blk_unregister_region(MKDEV(LOOP_MAJOR, 0), range);
unregister_blkdev(LOOP_MAJOR, "loop");
+
+ misc_deregister(&loop_misc);
}
module_init(loop_init);
diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c
index 773bfa7..ae3e167 100644
--- a/drivers/block/swim3.c
+++ b/drivers/block/swim3.c
@@ -1184,6 +1184,7 @@
{
.compatible = "swim3"
},
+ { /* end of list */ }
};
static struct macio_driver swim3_driver =
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index b536a9c..9ea8c25 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -123,8 +123,8 @@
#define BLKIF_MINOR_EXT(dev) ((dev)&(~EXTENDED))
#define EMULATED_HD_DISK_MINOR_OFFSET (0)
#define EMULATED_HD_DISK_NAME_OFFSET (EMULATED_HD_DISK_MINOR_OFFSET / 256)
-#define EMULATED_SD_DISK_MINOR_OFFSET (EMULATED_HD_DISK_MINOR_OFFSET + (4 * 16))
-#define EMULATED_SD_DISK_NAME_OFFSET (EMULATED_HD_DISK_NAME_OFFSET + 4)
+#define EMULATED_SD_DISK_MINOR_OFFSET (0)
+#define EMULATED_SD_DISK_NAME_OFFSET (EMULATED_SD_DISK_MINOR_OFFSET / 256)
#define DEV_NAME "xvd" /* name in /dev */
@@ -529,7 +529,7 @@
minor = BLKIF_MINOR_EXT(info->vdevice);
nr_parts = PARTS_PER_EXT_DISK;
offset = minor / nr_parts;
- if (xen_hvm_domain() && offset <= EMULATED_HD_DISK_NAME_OFFSET + 4)
+ if (xen_hvm_domain() && offset < EMULATED_HD_DISK_NAME_OFFSET + 4)
printk(KERN_WARNING "blkfront: vdevice 0x%x might conflict with "
"emulated IDE disks,\n\t choose an xvd device name"
"from xvde on\n", info->vdevice);
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index 75fb965..f997c27 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -1929,11 +1929,17 @@
goto out;
s->manufact.len = buf[0] << 8 | buf[1];
- if (s->manufact.len < 0 || s->manufact.len > 2048) {
+ if (s->manufact.len < 0) {
cdinfo(CD_WARNING, "Received invalid manufacture info length"
" (%d)\n", s->manufact.len);
ret = -EIO;
} else {
+ if (s->manufact.len > 2048) {
+ cdinfo(CD_WARNING, "Received invalid manufacture info "
+ "length (%d): truncating to 2048\n",
+ s->manufact.len);
+ s->manufact.len = 2048;
+ }
memcpy(s->manufact.value, &buf[4], s->manufact.len);
}
diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c
index 04f1e7c..f6cf448 100644
--- a/drivers/edac/i7core_edac.c
+++ b/drivers/edac/i7core_edac.c
@@ -1670,7 +1670,7 @@
char *type, *optype, *err, *msg;
unsigned long error = m->status & 0x1ff0000l;
u32 optypenum = (m->status >> 4) & 0x07;
- u32 core_err_cnt = (m->status >> 38) && 0x7fff;
+ u32 core_err_cnt = (m->status >> 38) & 0x7fff;
u32 dimm = (m->misc >> 16) & 0x3;
u32 channel = (m->misc >> 18) & 0x3;
u32 syndrome = m->misc >> 32;
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index e6ad3bb..4799393 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -216,15 +216,33 @@
struct fw_cdev_event_phy_packet phy_packet;
};
-static inline void __user *u64_to_uptr(__u64 value)
+#ifdef CONFIG_COMPAT
+static void __user *u64_to_uptr(u64 value)
+{
+ if (is_compat_task())
+ return compat_ptr(value);
+ else
+ return (void __user *)(unsigned long)value;
+}
+
+static u64 uptr_to_u64(void __user *ptr)
+{
+ if (is_compat_task())
+ return ptr_to_compat(ptr);
+ else
+ return (u64)(unsigned long)ptr;
+}
+#else
+static inline void __user *u64_to_uptr(u64 value)
{
return (void __user *)(unsigned long)value;
}
-static inline __u64 uptr_to_u64(void __user *ptr)
+static inline u64 uptr_to_u64(void __user *ptr)
{
- return (__u64)(unsigned long)ptr;
+ return (u64)(unsigned long)ptr;
}
+#endif /* CONFIG_COMPAT */
static int fw_device_op_open(struct inode *inode, struct file *file)
{
diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c
index 8ba7f79..f3b890d 100644
--- a/drivers/firewire/core-device.c
+++ b/drivers/firewire/core-device.c
@@ -455,15 +455,20 @@
static int read_rom(struct fw_device *device,
int generation, int index, u32 *data)
{
- int rcode;
+ u64 offset = (CSR_REGISTER_BASE | CSR_CONFIG_ROM) + index * 4;
+ int i, rcode;
/* device->node_id, accessed below, must not be older than generation */
smp_rmb();
- rcode = fw_run_transaction(device->card, TCODE_READ_QUADLET_REQUEST,
- device->node_id, generation, device->max_speed,
- (CSR_REGISTER_BASE | CSR_CONFIG_ROM) + index * 4,
- data, 4);
+ for (i = 10; i < 100; i += 10) {
+ rcode = fw_run_transaction(device->card,
+ TCODE_READ_QUADLET_REQUEST, device->node_id,
+ generation, device->max_speed, offset, data, 4);
+ if (rcode != RCODE_BUSY)
+ break;
+ msleep(i);
+ }
be32_to_cpus(data);
return rcode;
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index bcf792f..57cd3a4 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -2179,8 +2179,13 @@
ohci_driver_name, ohci)) {
fw_error("Failed to allocate interrupt %d.\n", dev->irq);
pci_disable_msi(dev);
- dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE,
- ohci->config_rom, ohci->config_rom_bus);
+
+ if (config_rom) {
+ dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE,
+ ohci->next_config_rom,
+ ohci->next_config_rom_bus);
+ ohci->next_config_rom = NULL;
+ }
return -EIO;
}
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index a8ab626..3c395a5 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -499,7 +499,7 @@
seq_printf(m, "Interrupts received: %d\n",
atomic_read(&dev_priv->irq_received));
for (i = 0; i < I915_NUM_RINGS; i++) {
- if (IS_GEN6(dev)) {
+ if (IS_GEN6(dev) || IS_GEN7(dev)) {
seq_printf(m, "Graphics Interrupt mask (%s): %08x\n",
dev_priv->ring[i].name,
I915_READ_IMR(&dev_priv->ring[i]));
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index feb4f16..7916bd9 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -36,6 +36,7 @@
#include <linux/io-mapping.h>
#include <linux/i2c.h>
#include <drm/intel-gtt.h>
+#include <linux/backlight.h>
/* General customization:
*/
@@ -690,6 +691,7 @@
int child_dev_num;
struct child_device_config *child_dev;
struct drm_connector *int_lvds_connector;
+ struct drm_connector *int_edp_connector;
bool mchbar_need_disable;
@@ -723,6 +725,8 @@
/* list of fbdev register on this device */
struct intel_fbdev *fbdev;
+ struct backlight_device *backlight;
+
struct drm_property *broadcast_rgb_property;
struct drm_property *force_audio_property;
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 02f96fd..9cbb0cd 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -2058,8 +2058,10 @@
dev->driver->get_vblank_counter = gm45_get_vblank_counter;
}
-
- dev->driver->get_vblank_timestamp = i915_get_vblank_timestamp;
+ if (drm_core_check_feature(dev, DRIVER_MODESET))
+ dev->driver->get_vblank_timestamp = i915_get_vblank_timestamp;
+ else
+ dev->driver->get_vblank_timestamp = NULL;
dev->driver->get_scanout_position = i915_get_crtc_scanoutpos;
if (IS_IVYBRIDGE(dev)) {
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index d1331f7..542453f 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -375,6 +375,7 @@
# define MI_FLUSH_ENABLE (1 << 11)
#define GFX_MODE 0x02520
+#define GFX_MODE_GEN7 0x0229c
#define GFX_RUN_LIST_ENABLE (1<<15)
#define GFX_TLB_INVALIDATE_ALWAYS (1<<13)
#define GFX_SURFACE_FAULT_ENABLE (1<<12)
@@ -382,6 +383,9 @@
#define GFX_PSMI_GRANULARITY (1<<10)
#define GFX_PPGTT_ENABLE (1<<9)
+#define GFX_MODE_ENABLE(bit) (((bit) << 16) | (bit))
+#define GFX_MODE_DISABLE(bit) (((bit) << 16) | (0))
+
#define SCPD0 0x0209c /* 915+ only */
#define IER 0x020a0
#define IIR 0x020a4
@@ -1318,6 +1322,7 @@
#define ADPA_PIPE_SELECT_MASK (1<<30)
#define ADPA_PIPE_A_SELECT 0
#define ADPA_PIPE_B_SELECT (1<<30)
+#define ADPA_PIPE_SELECT(pipe) ((pipe) << 30)
#define ADPA_USE_VGA_HVPOLARITY (1<<15)
#define ADPA_SETS_HVPOLARITY 0
#define ADPA_VSYNC_CNTL_DISABLE (1<<11)
@@ -1460,6 +1465,7 @@
/* Selects pipe B for LVDS data. Must be set on pre-965. */
#define LVDS_PIPEB_SELECT (1 << 30)
#define LVDS_PIPE_MASK (1 << 30)
+#define LVDS_PIPE(pipe) ((pipe) << 30)
/* LVDS dithering flag on 965/g4x platform */
#define LVDS_ENABLE_DITHER (1 << 25)
/* LVDS sync polarity flags. Set to invert (i.e. negative) */
@@ -1499,9 +1505,6 @@
#define LVDS_B0B3_POWER_DOWN (0 << 2)
#define LVDS_B0B3_POWER_UP (3 << 2)
-#define LVDS_PIPE_ENABLED(V, P) \
- (((V) & (LVDS_PIPE_MASK | LVDS_PORT_EN)) == ((P) << 30 | LVDS_PORT_EN))
-
/* Video Data Island Packet control */
#define VIDEO_DIP_DATA 0x61178
#define VIDEO_DIP_CTL 0x61170
@@ -3256,14 +3259,12 @@
#define ADPA_CRT_HOTPLUG_VOLREF_475MV (1<<17)
#define ADPA_CRT_HOTPLUG_FORCE_TRIGGER (1<<16)
-#define ADPA_PIPE_ENABLED(V, P) \
- (((V) & (ADPA_TRANS_SELECT_MASK | ADPA_DAC_ENABLE)) == ((P) << 30 | ADPA_DAC_ENABLE))
-
/* or SDVOB */
#define HDMIB 0xe1140
#define PORT_ENABLE (1 << 31)
#define TRANSCODER_A (0)
#define TRANSCODER_B (1 << 30)
+#define TRANSCODER(pipe) ((pipe) << 30)
#define TRANSCODER_MASK (1 << 30)
#define COLOR_FORMAT_8bpc (0)
#define COLOR_FORMAT_12bpc (3 << 26)
@@ -3280,9 +3281,6 @@
#define HSYNC_ACTIVE_HIGH (1 << 3)
#define PORT_DETECTED (1 << 2)
-#define HDMI_PIPE_ENABLED(V, P) \
- (((V) & (TRANSCODER_MASK | PORT_ENABLE)) == ((P) << 30 | PORT_ENABLE))
-
/* PCH SDVOB multiplex with HDMIB */
#define PCH_SDVOB HDMIB
@@ -3349,6 +3347,7 @@
#define PORT_TRANS_B_SEL_CPT (1<<29)
#define PORT_TRANS_C_SEL_CPT (2<<29)
#define PORT_TRANS_SEL_MASK (3<<29)
+#define PORT_TRANS_SEL_CPT(pipe) ((pipe) << 29)
#define TRANS_DP_CTL_A 0xe0300
#define TRANS_DP_CTL_B 0xe1300
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 87677d6..f107423 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -871,7 +871,8 @@
}
mutex_unlock(&dev->struct_mutex);
- intel_init_clock_gating(dev);
+ if (drm_core_check_feature(dev, DRIVER_MODESET))
+ intel_init_clock_gating(dev);
if (IS_IRONLAKE_M(dev)) {
ironlake_enable_drps(dev);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 35364e6..ee1d701 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -980,8 +980,8 @@
pipe_name(pipe));
}
-static bool dp_pipe_enabled(struct drm_i915_private *dev_priv, enum pipe pipe,
- int reg, u32 port_sel, u32 val)
+static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe, u32 port_sel, u32 val)
{
if ((val & DP_PORT_EN) == 0)
return false;
@@ -998,11 +998,58 @@
return true;
}
+static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe, u32 val)
+{
+ if ((val & PORT_ENABLE) == 0)
+ return false;
+
+ if (HAS_PCH_CPT(dev_priv->dev)) {
+ if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
+ return false;
+ } else {
+ if ((val & TRANSCODER_MASK) != TRANSCODER(pipe))
+ return false;
+ }
+ return true;
+}
+
+static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe, u32 val)
+{
+ if ((val & LVDS_PORT_EN) == 0)
+ return false;
+
+ if (HAS_PCH_CPT(dev_priv->dev)) {
+ if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
+ return false;
+ } else {
+ if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
+ return false;
+ }
+ return true;
+}
+
+static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe, u32 val)
+{
+ if ((val & ADPA_DAC_ENABLE) == 0)
+ return false;
+ if (HAS_PCH_CPT(dev_priv->dev)) {
+ if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
+ return false;
+ } else {
+ if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
+ return false;
+ }
+ return true;
+}
+
static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe, int reg, u32 port_sel)
{
u32 val = I915_READ(reg);
- WARN(dp_pipe_enabled(dev_priv, pipe, reg, port_sel, val),
+ WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
"PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
reg, pipe_name(pipe));
}
@@ -1011,7 +1058,7 @@
enum pipe pipe, int reg)
{
u32 val = I915_READ(reg);
- WARN(HDMI_PIPE_ENABLED(val, pipe),
+ WARN(hdmi_pipe_enabled(dev_priv, val, pipe),
"PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
reg, pipe_name(pipe));
}
@@ -1028,13 +1075,13 @@
reg = PCH_ADPA;
val = I915_READ(reg);
- WARN(ADPA_PIPE_ENABLED(val, pipe),
+ WARN(adpa_pipe_enabled(dev_priv, val, pipe),
"PCH VGA enabled on transcoder %c, should be disabled\n",
pipe_name(pipe));
reg = PCH_LVDS;
val = I915_READ(reg);
- WARN(LVDS_PIPE_ENABLED(val, pipe),
+ WARN(lvds_pipe_enabled(dev_priv, val, pipe),
"PCH LVDS enabled on transcoder %c, should be disabled\n",
pipe_name(pipe));
@@ -1360,7 +1407,7 @@
enum pipe pipe, int reg, u32 port_sel)
{
u32 val = I915_READ(reg);
- if (dp_pipe_enabled(dev_priv, pipe, reg, port_sel, val)) {
+ if (dp_pipe_enabled(dev_priv, pipe, port_sel, val)) {
DRM_DEBUG_KMS("Disabling pch dp %x on pipe %d\n", reg, pipe);
I915_WRITE(reg, val & ~DP_PORT_EN);
}
@@ -1370,7 +1417,7 @@
enum pipe pipe, int reg)
{
u32 val = I915_READ(reg);
- if (HDMI_PIPE_ENABLED(val, pipe)) {
+ if (hdmi_pipe_enabled(dev_priv, val, pipe)) {
DRM_DEBUG_KMS("Disabling pch HDMI %x on pipe %d\n",
reg, pipe);
I915_WRITE(reg, val & ~PORT_ENABLE);
@@ -1392,12 +1439,13 @@
reg = PCH_ADPA;
val = I915_READ(reg);
- if (ADPA_PIPE_ENABLED(val, pipe))
+ if (adpa_pipe_enabled(dev_priv, val, pipe))
I915_WRITE(reg, val & ~ADPA_DAC_ENABLE);
reg = PCH_LVDS;
val = I915_READ(reg);
- if (LVDS_PIPE_ENABLED(val, pipe)) {
+ if (lvds_pipe_enabled(dev_priv, val, pipe)) {
+ DRM_DEBUG_KMS("disable lvds on pipe %d val 0x%08x\n", pipe, val);
I915_WRITE(reg, val & ~LVDS_PORT_EN);
POSTING_READ(reg);
udelay(100);
@@ -5049,6 +5097,81 @@
return ret;
}
+static void ironlake_update_pch_refclk(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_mode_config *mode_config = &dev->mode_config;
+ struct drm_crtc *crtc;
+ struct intel_encoder *encoder;
+ struct intel_encoder *has_edp_encoder = NULL;
+ u32 temp;
+ bool has_lvds = false;
+
+ /* We need to take the global config into account */
+ list_for_each_entry(crtc, &mode_config->crtc_list, head) {
+ if (!crtc->enabled)
+ continue;
+
+ list_for_each_entry(encoder, &mode_config->encoder_list,
+ base.head) {
+ if (encoder->base.crtc != crtc)
+ continue;
+
+ switch (encoder->type) {
+ case INTEL_OUTPUT_LVDS:
+ has_lvds = true;
+ case INTEL_OUTPUT_EDP:
+ has_edp_encoder = encoder;
+ break;
+ }
+ }
+ }
+
+ /* Ironlake: try to setup display ref clock before DPLL
+ * enabling. This is only under driver's control after
+ * PCH B stepping, previous chipset stepping should be
+ * ignoring this setting.
+ */
+ temp = I915_READ(PCH_DREF_CONTROL);
+ /* Always enable nonspread source */
+ temp &= ~DREF_NONSPREAD_SOURCE_MASK;
+ temp |= DREF_NONSPREAD_SOURCE_ENABLE;
+ temp &= ~DREF_SSC_SOURCE_MASK;
+ temp |= DREF_SSC_SOURCE_ENABLE;
+ I915_WRITE(PCH_DREF_CONTROL, temp);
+
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
+
+ if (has_edp_encoder) {
+ if (intel_panel_use_ssc(dev_priv)) {
+ temp |= DREF_SSC1_ENABLE;
+ I915_WRITE(PCH_DREF_CONTROL, temp);
+
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
+ }
+ temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
+
+ /* Enable CPU source on CPU attached eDP */
+ if (!intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
+ if (intel_panel_use_ssc(dev_priv))
+ temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
+ else
+ temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
+ } else {
+ /* Enable SSC on PCH eDP if needed */
+ if (intel_panel_use_ssc(dev_priv)) {
+ DRM_ERROR("enabling SSC on PCH\n");
+ temp |= DREF_SUPERSPREAD_SOURCE_ENABLE;
+ }
+ }
+ I915_WRITE(PCH_DREF_CONTROL, temp);
+ POSTING_READ(PCH_DREF_CONTROL);
+ udelay(200);
+ }
+}
+
static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
@@ -5244,49 +5367,7 @@
ironlake_compute_m_n(intel_crtc->bpp, lane, target_clock, link_bw,
&m_n);
- /* Ironlake: try to setup display ref clock before DPLL
- * enabling. This is only under driver's control after
- * PCH B stepping, previous chipset stepping should be
- * ignoring this setting.
- */
- temp = I915_READ(PCH_DREF_CONTROL);
- /* Always enable nonspread source */
- temp &= ~DREF_NONSPREAD_SOURCE_MASK;
- temp |= DREF_NONSPREAD_SOURCE_ENABLE;
- temp &= ~DREF_SSC_SOURCE_MASK;
- temp |= DREF_SSC_SOURCE_ENABLE;
- I915_WRITE(PCH_DREF_CONTROL, temp);
-
- POSTING_READ(PCH_DREF_CONTROL);
- udelay(200);
-
- if (has_edp_encoder) {
- if (intel_panel_use_ssc(dev_priv)) {
- temp |= DREF_SSC1_ENABLE;
- I915_WRITE(PCH_DREF_CONTROL, temp);
-
- POSTING_READ(PCH_DREF_CONTROL);
- udelay(200);
- }
- temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
-
- /* Enable CPU source on CPU attached eDP */
- if (!intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
- if (intel_panel_use_ssc(dev_priv))
- temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
- else
- temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
- } else {
- /* Enable SSC on PCH eDP if needed */
- if (intel_panel_use_ssc(dev_priv)) {
- DRM_ERROR("enabling SSC on PCH\n");
- temp |= DREF_SUPERSPREAD_SOURCE_ENABLE;
- }
- }
- I915_WRITE(PCH_DREF_CONTROL, temp);
- POSTING_READ(PCH_DREF_CONTROL);
- udelay(200);
- }
+ ironlake_update_pch_refclk(dev);
fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
if (has_reduced_clock)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 0feae90..44fef5e 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1841,6 +1841,11 @@
static void
intel_dp_destroy (struct drm_connector *connector)
{
+ struct drm_device *dev = connector->dev;
+
+ if (intel_dpd_is_edp(dev))
+ intel_panel_destroy_backlight(dev);
+
drm_sysfs_connector_remove(connector);
drm_connector_cleanup(connector);
kfree(connector);
@@ -2072,6 +2077,8 @@
DRM_MODE_TYPE_PREFERRED;
}
}
+ dev_priv->int_edp_connector = connector;
+ intel_panel_setup_backlight(dev);
}
intel_dp_add_properties(intel_dp, connector);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 7b330e7..0b2ee9d 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -297,9 +297,10 @@
extern u32 intel_panel_get_max_backlight(struct drm_device *dev);
extern u32 intel_panel_get_backlight(struct drm_device *dev);
extern void intel_panel_set_backlight(struct drm_device *dev, u32 level);
-extern void intel_panel_setup_backlight(struct drm_device *dev);
+extern int intel_panel_setup_backlight(struct drm_device *dev);
extern void intel_panel_enable_backlight(struct drm_device *dev);
extern void intel_panel_disable_backlight(struct drm_device *dev);
+extern void intel_panel_destroy_backlight(struct drm_device *dev);
extern enum drm_connector_status intel_panel_detect(struct drm_device *dev);
extern void intel_crtc_load_lut(struct drm_crtc *crtc);
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 2e8ddfc..31da77f 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -72,14 +72,16 @@
{
struct drm_device *dev = intel_lvds->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 ctl_reg, lvds_reg;
+ u32 ctl_reg, lvds_reg, stat_reg;
if (HAS_PCH_SPLIT(dev)) {
ctl_reg = PCH_PP_CONTROL;
lvds_reg = PCH_LVDS;
+ stat_reg = PCH_PP_STATUS;
} else {
ctl_reg = PP_CONTROL;
lvds_reg = LVDS;
+ stat_reg = PP_STATUS;
}
I915_WRITE(lvds_reg, I915_READ(lvds_reg) | LVDS_PORT_EN);
@@ -94,17 +96,16 @@
DRM_DEBUG_KMS("applying panel-fitter: %x, %x\n",
intel_lvds->pfit_control,
intel_lvds->pfit_pgm_ratios);
- if (wait_for((I915_READ(PP_STATUS) & PP_ON) == 0, 1000)) {
- DRM_ERROR("timed out waiting for panel to power off\n");
- } else {
- I915_WRITE(PFIT_PGM_RATIOS, intel_lvds->pfit_pgm_ratios);
- I915_WRITE(PFIT_CONTROL, intel_lvds->pfit_control);
- intel_lvds->pfit_dirty = false;
- }
+
+ I915_WRITE(PFIT_PGM_RATIOS, intel_lvds->pfit_pgm_ratios);
+ I915_WRITE(PFIT_CONTROL, intel_lvds->pfit_control);
+ intel_lvds->pfit_dirty = false;
}
I915_WRITE(ctl_reg, I915_READ(ctl_reg) | POWER_TARGET_ON);
POSTING_READ(lvds_reg);
+ if (wait_for((I915_READ(stat_reg) & PP_ON) != 0, 1000))
+ DRM_ERROR("timed out waiting for panel to power on\n");
intel_panel_enable_backlight(dev);
}
@@ -113,24 +114,25 @@
{
struct drm_device *dev = intel_lvds->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 ctl_reg, lvds_reg;
+ u32 ctl_reg, lvds_reg, stat_reg;
if (HAS_PCH_SPLIT(dev)) {
ctl_reg = PCH_PP_CONTROL;
lvds_reg = PCH_LVDS;
+ stat_reg = PCH_PP_STATUS;
} else {
ctl_reg = PP_CONTROL;
lvds_reg = LVDS;
+ stat_reg = PP_STATUS;
}
intel_panel_disable_backlight(dev);
I915_WRITE(ctl_reg, I915_READ(ctl_reg) & ~POWER_TARGET_ON);
+ if (wait_for((I915_READ(stat_reg) & PP_ON) == 0, 1000))
+ DRM_ERROR("timed out waiting for panel to power off\n");
if (intel_lvds->pfit_control) {
- if (wait_for((I915_READ(PP_STATUS) & PP_ON) == 0, 1000))
- DRM_ERROR("timed out waiting for panel to power off\n");
-
I915_WRITE(PFIT_CONTROL, 0);
intel_lvds->pfit_dirty = true;
}
@@ -398,53 +400,21 @@
static void intel_lvds_prepare(struct drm_encoder *encoder)
{
- struct drm_device *dev = encoder->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_lvds *intel_lvds = to_intel_lvds(encoder);
- /* We try to do the minimum that is necessary in order to unlock
- * the registers for mode setting.
- *
- * On Ironlake, this is quite simple as we just set the unlock key
- * and ignore all subtleties. (This may cause some issues...)
- *
+ /*
* Prior to Ironlake, we must disable the pipe if we want to adjust
* the panel fitter. However at all other times we can just reset
* the registers regardless.
*/
-
- if (HAS_PCH_SPLIT(dev)) {
- I915_WRITE(PCH_PP_CONTROL,
- I915_READ(PCH_PP_CONTROL) | PANEL_UNLOCK_REGS);
- } else if (intel_lvds->pfit_dirty) {
- I915_WRITE(PP_CONTROL,
- (I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS)
- & ~POWER_TARGET_ON);
- } else {
- I915_WRITE(PP_CONTROL,
- I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS);
- }
+ if (!HAS_PCH_SPLIT(encoder->dev) && intel_lvds->pfit_dirty)
+ intel_lvds_disable(intel_lvds);
}
static void intel_lvds_commit(struct drm_encoder *encoder)
{
- struct drm_device *dev = encoder->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_lvds *intel_lvds = to_intel_lvds(encoder);
- /* Undo any unlocking done in prepare to prevent accidental
- * adjustment of the registers.
- */
- if (HAS_PCH_SPLIT(dev)) {
- u32 val = I915_READ(PCH_PP_CONTROL);
- if ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS)
- I915_WRITE(PCH_PP_CONTROL, val & 0x3);
- } else {
- u32 val = I915_READ(PP_CONTROL);
- if ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS)
- I915_WRITE(PP_CONTROL, val & 0x3);
- }
-
/* Always do a full power on as we do not know what state
* we were left in.
*/
@@ -582,6 +552,8 @@
struct drm_device *dev = connector->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
+ intel_panel_destroy_backlight(dev);
+
if (dev_priv->lid_notifier.notifier_call)
acpi_lid_notifier_unregister(&dev_priv->lid_notifier);
drm_sysfs_connector_remove(connector);
@@ -1040,6 +1012,19 @@
pwm = I915_READ(BLC_PWM_PCH_CTL1);
pwm |= PWM_PCH_ENABLE;
I915_WRITE(BLC_PWM_PCH_CTL1, pwm);
+ /*
+ * Unlock registers and just
+ * leave them unlocked
+ */
+ I915_WRITE(PCH_PP_CONTROL,
+ I915_READ(PCH_PP_CONTROL) | PANEL_UNLOCK_REGS);
+ } else {
+ /*
+ * Unlock registers and just
+ * leave them unlocked
+ */
+ I915_WRITE(PP_CONTROL,
+ I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS);
}
dev_priv->lid_notifier.notifier_call = intel_lid_notify;
if (acpi_lid_notifier_register(&dev_priv->lid_notifier)) {
@@ -1049,6 +1034,9 @@
/* keep the LVDS connector */
dev_priv->int_lvds_connector = connector;
drm_sysfs_connector_add(connector);
+
+ intel_panel_setup_backlight(dev);
+
return true;
failed:
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index b7c5ddb..b8e8158b 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -227,7 +227,6 @@
asle->aslc = asle_stat;
}
-/* Only present on Ironlake+ */
void intel_opregion_gse_intr(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 05f500c..a9e0c7b 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -277,7 +277,7 @@
dev_priv->backlight_enabled = true;
}
-void intel_panel_setup_backlight(struct drm_device *dev)
+static void intel_panel_init_backlight(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -309,3 +309,73 @@
return connector_status_unknown;
}
+
+#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
+static int intel_panel_update_status(struct backlight_device *bd)
+{
+ struct drm_device *dev = bl_get_data(bd);
+ intel_panel_set_backlight(dev, bd->props.brightness);
+ return 0;
+}
+
+static int intel_panel_get_brightness(struct backlight_device *bd)
+{
+ struct drm_device *dev = bl_get_data(bd);
+ return intel_panel_get_backlight(dev);
+}
+
+static const struct backlight_ops intel_panel_bl_ops = {
+ .update_status = intel_panel_update_status,
+ .get_brightness = intel_panel_get_brightness,
+};
+
+int intel_panel_setup_backlight(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct backlight_properties props;
+ struct drm_connector *connector;
+
+ intel_panel_init_backlight(dev);
+
+ if (dev_priv->int_lvds_connector)
+ connector = dev_priv->int_lvds_connector;
+ else if (dev_priv->int_edp_connector)
+ connector = dev_priv->int_edp_connector;
+ else
+ return -ENODEV;
+
+ props.type = BACKLIGHT_RAW;
+ props.max_brightness = intel_panel_get_max_backlight(dev);
+ dev_priv->backlight =
+ backlight_device_register("intel_backlight",
+ &connector->kdev, dev,
+ &intel_panel_bl_ops, &props);
+
+ if (IS_ERR(dev_priv->backlight)) {
+ DRM_ERROR("Failed to register backlight: %ld\n",
+ PTR_ERR(dev_priv->backlight));
+ dev_priv->backlight = NULL;
+ return -ENODEV;
+ }
+ dev_priv->backlight->props.brightness = intel_panel_get_backlight(dev);
+ return 0;
+}
+
+void intel_panel_destroy_backlight(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ if (dev_priv->backlight)
+ backlight_device_unregister(dev_priv->backlight);
+}
+#else
+int intel_panel_setup_backlight(struct drm_device *dev)
+{
+ intel_panel_init_backlight(dev);
+ return 0;
+}
+
+void intel_panel_destroy_backlight(struct drm_device *dev)
+{
+ return;
+}
+#endif
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 47b9b27..c30626e 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -290,6 +290,10 @@
if (IS_GEN6(dev) || IS_GEN7(dev))
mode |= MI_FLUSH_ENABLE << 16 | MI_FLUSH_ENABLE;
I915_WRITE(MI_MODE, mode);
+ if (IS_GEN7(dev))
+ I915_WRITE(GFX_MODE_GEN7,
+ GFX_MODE_DISABLE(GFX_TLB_INVALIDATE_ALWAYS) |
+ GFX_MODE_ENABLE(GFX_REPLAY_MODE));
}
if (INTEL_INFO(dev)->gen >= 6) {
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 645b84b..7ad43c6 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -613,6 +613,18 @@
return true;
}
+bool radeon_dp_needs_link_train(struct radeon_connector *radeon_connector)
+{
+ u8 link_status[DP_LINK_STATUS_SIZE];
+ struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
+
+ if (!radeon_dp_get_link_status(radeon_connector, link_status))
+ return false;
+ if (dp_channel_eq_ok(link_status, dig->dp_lane_count))
+ return false;
+ return true;
+}
+
struct radeon_dp_link_train_info {
struct radeon_device *rdev;
struct drm_encoder *encoder;
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 14dce9f..fb5fa08 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -743,7 +743,7 @@
!evergreen_average_bandwidth_vs_available_bandwidth(&wm) ||
!evergreen_check_latency_hiding(&wm) ||
(rdev->disp_priority == 2)) {
- DRM_INFO("force priority to high\n");
+ DRM_DEBUG_KMS("force priority to high\n");
priority_a_cnt |= PRIORITY_ALWAYS_ON;
priority_b_cnt |= PRIORITY_ALWAYS_ON;
}
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 6d6b5f1..4f0c1ec 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -60,18 +60,20 @@
radeon_hpd_set_polarity(rdev, radeon_connector->hpd.hpd);
- /* powering up/down the eDP panel generates hpd events which
- * can interfere with modesetting.
- */
- if (connector->connector_type == DRM_MODE_CONNECTOR_eDP)
+ /* if the connector is already off, don't turn it back on */
+ if (connector->dpms != DRM_MODE_DPMS_ON)
return;
- /* pre-r600 did not always have the hpd pins mapped accurately to connectors */
- if (rdev->family >= CHIP_R600) {
- if (radeon_hpd_sense(rdev, radeon_connector->hpd.hpd))
+ /* just deal with DP (not eDP) here. */
+ if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
+ int saved_dpms = connector->dpms;
+
+ if (radeon_hpd_sense(rdev, radeon_connector->hpd.hpd) &&
+ radeon_dp_needs_link_train(radeon_connector))
drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
else
drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+ connector->dpms = saved_dpms;
}
}
@@ -464,6 +466,16 @@
(supported_device == ATOM_DEVICE_DFP2_SUPPORT))
return true;
}
+ /* TOSHIBA Satellite L300D with ATI Mobility Radeon x1100
+ * (RS690M) sends data to i2c bus for a HDMI connector that
+ * is not implemented */
+ if ((dev->pdev->device == 0x791f) &&
+ (dev->pdev->subsystem_vendor == 0x1179) &&
+ (dev->pdev->subsystem_device == 0xff68)) {
+ if ((connector_type == DRM_MODE_CONNECTOR_HDMIA) &&
+ (supported_device == ATOM_DEVICE_DFP2_SUPPORT))
+ return true;
+ }
/* Default: no EDID header probe required for DDC probing */
return false;
@@ -474,11 +486,19 @@
{
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
struct drm_display_mode *native_mode = &radeon_encoder->native_mode;
+ struct drm_display_mode *t, *mode;
+
+ /* If the EDID preferred mode doesn't match the native mode, use it */
+ list_for_each_entry_safe(mode, t, &connector->probed_modes, head) {
+ if (mode->type & DRM_MODE_TYPE_PREFERRED) {
+ if (mode->hdisplay != native_mode->hdisplay ||
+ mode->vdisplay != native_mode->vdisplay)
+ memcpy(native_mode, mode, sizeof(*mode));
+ }
+ }
/* Try to get native mode details from EDID if necessary */
if (!native_mode->clock) {
- struct drm_display_mode *t, *mode;
-
list_for_each_entry_safe(mode, t, &connector->probed_modes, head) {
if (mode->hdisplay == native_mode->hdisplay &&
mode->vdisplay == native_mode->vdisplay) {
@@ -489,6 +509,7 @@
}
}
}
+
if (!native_mode->clock) {
DRM_DEBUG_KMS("No LVDS native mode details, disabling RMX\n");
radeon_encoder->rmx_type = RMX_OFF;
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 440e6ec..b51e157 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -32,6 +32,7 @@
#include <drm/radeon_drm.h>
#include <linux/vgaarb.h>
#include <linux/vga_switcheroo.h>
+#include <linux/efi.h>
#include "radeon_reg.h"
#include "radeon.h"
#include "atom.h"
@@ -300,6 +301,8 @@
mc->mc_vram_size = mc->aper_size;
}
mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
+ if (radeon_vram_limit && radeon_vram_limit < mc->real_vram_size)
+ mc->real_vram_size = radeon_vram_limit;
dev_info(rdev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
mc->mc_vram_size >> 20, mc->vram_start,
mc->vram_end, mc->real_vram_size >> 20);
@@ -348,6 +351,9 @@
{
uint32_t reg;
+ if (efi_enabled && rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE)
+ return false;
+
/* first check CRTCs */
if (ASIC_IS_DCE41(rdev)) {
reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
index b293487..319d85d 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -2323,6 +2323,9 @@
default:
encoder->possible_crtcs = 0x3;
break;
+ case 4:
+ encoder->possible_crtcs = 0xf;
+ break;
case 6:
encoder->possible_crtcs = 0x3f;
break;
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index d09031c..68820f5 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -479,6 +479,7 @@
struct drm_display_mode *mode);
extern void radeon_dp_link_train(struct drm_encoder *encoder,
struct drm_connector *connector);
+extern bool radeon_dp_needs_link_train(struct radeon_connector *radeon_connector);
extern u8 radeon_dp_getsinktype(struct radeon_connector *radeon_connector);
extern bool radeon_dp_getdpcd(struct radeon_connector *radeon_connector);
extern void atombios_dig_encoder_setup(struct drm_encoder *encoder, int action, int panel_mode);
diff --git a/drivers/gpu/drm/radeon/radeon_test.c b/drivers/gpu/drm/radeon/radeon_test.c
index dee4a0c..602fa35 100644
--- a/drivers/gpu/drm/radeon/radeon_test.c
+++ b/drivers/gpu/drm/radeon/radeon_test.c
@@ -40,10 +40,14 @@
size = 1024 * 1024;
/* Number of tests =
- * (Total GTT - IB pool - writeback page - ring buffer) / test size
+ * (Total GTT - IB pool - writeback page - ring buffers) / test size
*/
- n = ((u32)(rdev->mc.gtt_size - RADEON_IB_POOL_SIZE*64*1024 - RADEON_GPU_PAGE_SIZE -
- rdev->cp.ring_size)) / size;
+ n = rdev->mc.gtt_size - RADEON_IB_POOL_SIZE*64*1024 - rdev->cp.ring_size;
+ if (rdev->wb.wb_obj)
+ n -= RADEON_GPU_PAGE_SIZE;
+ if (rdev->ih.ring_obj)
+ n -= rdev->ih.ring_size;
+ n /= size;
gtt_obj = kzalloc(n * sizeof(*gtt_obj), GFP_KERNEL);
if (!gtt_obj) {
@@ -132,9 +136,15 @@
gtt_start++, vram_start++) {
if (*vram_start != gtt_start) {
DRM_ERROR("Incorrect GTT->VRAM copy %d: Got 0x%p, "
- "expected 0x%p (GTT map 0x%p-0x%p)\n",
- i, *vram_start, gtt_start, gtt_map,
- gtt_end);
+ "expected 0x%p (GTT/VRAM offset "
+ "0x%16llx/0x%16llx)\n",
+ i, *vram_start, gtt_start,
+ (unsigned long long)
+ (gtt_addr - rdev->mc.gtt_start +
+ (void*)gtt_start - gtt_map),
+ (unsigned long long)
+ (vram_addr - rdev->mc.vram_start +
+ (void*)gtt_start - gtt_map));
radeon_bo_kunmap(vram_obj);
goto out_cleanup;
}
@@ -175,9 +185,15 @@
gtt_start++, vram_start++) {
if (*gtt_start != vram_start) {
DRM_ERROR("Incorrect VRAM->GTT copy %d: Got 0x%p, "
- "expected 0x%p (VRAM map 0x%p-0x%p)\n",
- i, *gtt_start, vram_start, vram_map,
- vram_end);
+ "expected 0x%p (VRAM/GTT offset "
+ "0x%16llx/0x%16llx)\n",
+ i, *gtt_start, vram_start,
+ (unsigned long long)
+ (vram_addr - rdev->mc.vram_start +
+ (void*)vram_start - vram_map),
+ (unsigned long long)
+ (gtt_addr - rdev->mc.gtt_start +
+ (void*)vram_start - vram_map));
radeon_bo_kunmap(gtt_obj[i]);
goto out_cleanup;
}
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index 60125dd..9b86fb0 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -450,6 +450,29 @@
return -EINVAL;
mem->bus.base = rdev->mc.aper_base;
mem->bus.is_iomem = true;
+#ifdef __alpha__
+ /*
+ * Alpha: use bus.addr to hold the ioremap() return,
+ * so we can modify bus.base below.
+ */
+ if (mem->placement & TTM_PL_FLAG_WC)
+ mem->bus.addr =
+ ioremap_wc(mem->bus.base + mem->bus.offset,
+ mem->bus.size);
+ else
+ mem->bus.addr =
+ ioremap_nocache(mem->bus.base + mem->bus.offset,
+ mem->bus.size);
+
+ /*
+ * Alpha: Use just the bus offset plus
+ * the hose/domain memory base for bus.base.
+ * It then can be used to build PTEs for VRAM
+ * access, as done in ttm_bo_vm_fault().
+ */
+ mem->bus.base = (mem->bus.base & 0x0ffffffffUL) +
+ rdev->ddev->hose->dense_mem_base;
+#endif
break;
default:
return -EINVAL;
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 56619f6..a4d38d8 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -353,8 +353,10 @@
ret = ttm_tt_set_user(bo->ttm, current,
bo->buffer_start, bo->num_pages);
- if (unlikely(ret != 0))
+ if (unlikely(ret != 0)) {
ttm_tt_destroy(bo->ttm);
+ bo->ttm = NULL;
+ }
break;
default:
printk(KERN_ERR TTM_PFX "Illegal buffer object type\n");
@@ -390,10 +392,12 @@
* Create and bind a ttm if required.
*/
- if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED) && (bo->ttm == NULL)) {
- ret = ttm_bo_add_ttm(bo, false);
- if (ret)
- goto out_err;
+ if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) {
+ if (bo->ttm == NULL) {
+ ret = ttm_bo_add_ttm(bo, false);
+ if (ret)
+ goto out_err;
+ }
ret = ttm_tt_set_placement_caching(bo->ttm, mem->placement);
if (ret)
diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c
index 77dbf40..ae3c6f5 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -635,13 +635,13 @@
if (ret)
return ret;
- ttm_bo_free_old_node(bo);
if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) &&
(bo->ttm != NULL)) {
ttm_tt_unbind(bo->ttm);
ttm_tt_destroy(bo->ttm);
bo->ttm = NULL;
}
+ ttm_bo_free_old_node(bo);
} else {
/**
* This should help pipeline ordinary buffer moves.
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 306b15f..1130a89 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -589,6 +589,7 @@
config HID_WIIMOTE
tristate "Nintendo Wii Remote support"
depends on BT_HIDP
+ depends on LEDS_CLASS
---help---
Support for the Nintendo Wii Remote bluetooth device.
diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c
index b85744f..18b3bc6 100644
--- a/drivers/hid/hid-apple.c
+++ b/drivers/hid/hid-apple.c
@@ -444,6 +444,12 @@
{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS),
.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
APPLE_RDESC_JIS },
+ { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI),
+ .driver_data = APPLE_HAS_FN },
+ { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO),
+ .driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD },
+ { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS),
+ .driver_data = APPLE_HAS_FN },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO),
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 1a5cf0c..242353d 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1340,6 +1340,9 @@
{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index db63ccf..7d27d2b 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -109,6 +109,9 @@
#define USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI 0x0245
#define USB_DEVICE_ID_APPLE_WELLSPRING5_ISO 0x0246
#define USB_DEVICE_ID_APPLE_WELLSPRING5_JIS 0x0247
+#define USB_DEVICE_ID_APPLE_ALU_REVB_ANSI 0x024f
+#define USB_DEVICE_ID_APPLE_ALU_REVB_ISO 0x0250
+#define USB_DEVICE_ID_APPLE_ALU_REVB_JIS 0x0251
#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI 0x0239
#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO 0x023a
#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS 0x023b
@@ -576,6 +579,9 @@
#define USB_DEVICE_ID_SAMSUNG_IR_REMOTE 0x0001
#define USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE 0x0600
+#define USB_VENDOR_ID_SIGMA_MICRO 0x1c4f
+#define USB_DEVICE_ID_SIGMA_MICRO_KEYBOARD 0x0002
+
#define USB_VENDOR_ID_SKYCABLE 0x1223
#define USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER 0x3F07
diff --git a/drivers/hid/hid-wiimote.c b/drivers/hid/hid-wiimote.c
index a594383..85a02e5f 100644
--- a/drivers/hid/hid-wiimote.c
+++ b/drivers/hid/hid-wiimote.c
@@ -10,10 +10,10 @@
* any later version.
*/
-#include <linux/atomic.h>
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/input.h>
+#include <linux/leds.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include "hid-ids.h"
@@ -33,9 +33,9 @@
};
struct wiimote_data {
- atomic_t ready;
struct hid_device *hdev;
struct input_dev *input;
+ struct led_classdev *leds[4];
spinlock_t qlock;
__u8 head;
@@ -53,8 +53,15 @@
#define WIIPROTO_FLAGS_LEDS (WIIPROTO_FLAG_LED1 | WIIPROTO_FLAG_LED2 | \
WIIPROTO_FLAG_LED3 | WIIPROTO_FLAG_LED4)
+/* return flag for led \num */
+#define WIIPROTO_FLAG_LED(num) (WIIPROTO_FLAG_LED1 << (num - 1))
+
enum wiiproto_reqs {
+ WIIPROTO_REQ_NULL = 0x0,
WIIPROTO_REQ_LED = 0x11,
+ WIIPROTO_REQ_DRM = 0x12,
+ WIIPROTO_REQ_STATUS = 0x20,
+ WIIPROTO_REQ_RETURN = 0x22,
WIIPROTO_REQ_DRM_K = 0x30,
};
@@ -87,9 +94,6 @@
BTN_MODE, /* WIIPROTO_KEY_HOME */
};
-#define dev_to_wii(pdev) hid_get_drvdata(container_of(pdev, struct hid_device, \
- dev))
-
static ssize_t wiimote_hid_send(struct hid_device *hdev, __u8 *buffer,
size_t count)
{
@@ -192,66 +196,96 @@
wiimote_queue(wdata, cmd, sizeof(cmd));
}
-#define wiifs_led_show_set(num) \
-static ssize_t wiifs_led_show_##num(struct device *dev, \
- struct device_attribute *attr, char *buf) \
-{ \
- struct wiimote_data *wdata = dev_to_wii(dev); \
- unsigned long flags; \
- int state; \
- \
- if (!atomic_read(&wdata->ready)) \
- return -EBUSY; \
- \
- spin_lock_irqsave(&wdata->state.lock, flags); \
- state = !!(wdata->state.flags & WIIPROTO_FLAG_LED##num); \
- spin_unlock_irqrestore(&wdata->state.lock, flags); \
- \
- return sprintf(buf, "%d\n", state); \
-} \
-static ssize_t wiifs_led_set_##num(struct device *dev, \
- struct device_attribute *attr, const char *buf, size_t count) \
-{ \
- struct wiimote_data *wdata = dev_to_wii(dev); \
- int tmp = simple_strtoul(buf, NULL, 10); \
- unsigned long flags; \
- __u8 state; \
- \
- if (!atomic_read(&wdata->ready)) \
- return -EBUSY; \
- \
- spin_lock_irqsave(&wdata->state.lock, flags); \
- \
- state = wdata->state.flags; \
- \
- if (tmp) \
- wiiproto_req_leds(wdata, state | WIIPROTO_FLAG_LED##num);\
- else \
- wiiproto_req_leds(wdata, state & ~WIIPROTO_FLAG_LED##num);\
- \
- spin_unlock_irqrestore(&wdata->state.lock, flags); \
- \
- return count; \
-} \
-static DEVICE_ATTR(led##num, S_IRUGO | S_IWUSR, wiifs_led_show_##num, \
- wiifs_led_set_##num)
+/*
+ * Check what peripherals of the wiimote are currently
+ * active and select a proper DRM that supports all of
+ * the requested data inputs.
+ */
+static __u8 select_drm(struct wiimote_data *wdata)
+{
+ return WIIPROTO_REQ_DRM_K;
+}
-wiifs_led_show_set(1);
-wiifs_led_show_set(2);
-wiifs_led_show_set(3);
-wiifs_led_show_set(4);
+static void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm)
+{
+ __u8 cmd[3];
+
+ if (drm == WIIPROTO_REQ_NULL)
+ drm = select_drm(wdata);
+
+ cmd[0] = WIIPROTO_REQ_DRM;
+ cmd[1] = 0;
+ cmd[2] = drm;
+
+ wiimote_queue(wdata, cmd, sizeof(cmd));
+}
+
+static enum led_brightness wiimote_leds_get(struct led_classdev *led_dev)
+{
+ struct wiimote_data *wdata;
+ struct device *dev = led_dev->dev->parent;
+ int i;
+ unsigned long flags;
+ bool value = false;
+
+ wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
+
+ for (i = 0; i < 4; ++i) {
+ if (wdata->leds[i] == led_dev) {
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1);
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+ break;
+ }
+ }
+
+ return value ? LED_FULL : LED_OFF;
+}
+
+static void wiimote_leds_set(struct led_classdev *led_dev,
+ enum led_brightness value)
+{
+ struct wiimote_data *wdata;
+ struct device *dev = led_dev->dev->parent;
+ int i;
+ unsigned long flags;
+ __u8 state, flag;
+
+ wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
+
+ for (i = 0; i < 4; ++i) {
+ if (wdata->leds[i] == led_dev) {
+ flag = WIIPROTO_FLAG_LED(i + 1);
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ state = wdata->state.flags;
+ if (value == LED_OFF)
+ wiiproto_req_leds(wdata, state & ~flag);
+ else
+ wiiproto_req_leds(wdata, state | flag);
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+ break;
+ }
+ }
+}
static int wiimote_input_event(struct input_dev *dev, unsigned int type,
unsigned int code, int value)
{
+ return 0;
+}
+
+static int wiimote_input_open(struct input_dev *dev)
+{
struct wiimote_data *wdata = input_get_drvdata(dev);
- if (!atomic_read(&wdata->ready))
- return -EBUSY;
- /* smp_rmb: Make sure wdata->xy is available when wdata->ready is 1 */
- smp_rmb();
+ return hid_hw_open(wdata->hdev);
+}
- return 0;
+static void wiimote_input_close(struct input_dev *dev)
+{
+ struct wiimote_data *wdata = input_get_drvdata(dev);
+
+ hid_hw_close(wdata->hdev);
}
static void handler_keys(struct wiimote_data *wdata, const __u8 *payload)
@@ -281,6 +315,26 @@
input_sync(wdata->input);
}
+static void handler_status(struct wiimote_data *wdata, const __u8 *payload)
+{
+ handler_keys(wdata, payload);
+
+ /* on status reports the drm is reset so we need to resend the drm */
+ wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
+}
+
+static void handler_return(struct wiimote_data *wdata, const __u8 *payload)
+{
+ __u8 err = payload[3];
+ __u8 cmd = payload[2];
+
+ handler_keys(wdata, payload);
+
+ if (err)
+ hid_warn(wdata->hdev, "Remote error %hhu on req %hhu\n", err,
+ cmd);
+}
+
struct wiiproto_handler {
__u8 id;
size_t size;
@@ -288,6 +342,8 @@
};
static struct wiiproto_handler handlers[] = {
+ { .id = WIIPROTO_REQ_STATUS, .size = 6, .func = handler_status },
+ { .id = WIIPROTO_REQ_RETURN, .size = 4, .func = handler_return },
{ .id = WIIPROTO_REQ_DRM_K, .size = 2, .func = handler_keys },
{ .id = 0 }
};
@@ -300,11 +356,6 @@
int i;
unsigned long flags;
- if (!atomic_read(&wdata->ready))
- return -EBUSY;
- /* smp_rmb: Make sure wdata->xy is available when wdata->ready is 1 */
- smp_rmb();
-
if (size < 1)
return -EINVAL;
@@ -321,6 +372,58 @@
return 0;
}
+static void wiimote_leds_destroy(struct wiimote_data *wdata)
+{
+ int i;
+ struct led_classdev *led;
+
+ for (i = 0; i < 4; ++i) {
+ if (wdata->leds[i]) {
+ led = wdata->leds[i];
+ wdata->leds[i] = NULL;
+ led_classdev_unregister(led);
+ kfree(led);
+ }
+ }
+}
+
+static int wiimote_leds_create(struct wiimote_data *wdata)
+{
+ int i, ret;
+ struct device *dev = &wdata->hdev->dev;
+ size_t namesz = strlen(dev_name(dev)) + 9;
+ struct led_classdev *led;
+ char *name;
+
+ for (i = 0; i < 4; ++i) {
+ led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL);
+ if (!led) {
+ ret = -ENOMEM;
+ goto err;
+ }
+ name = (void*)&led[1];
+ snprintf(name, namesz, "%s:blue:p%d", dev_name(dev), i);
+ led->name = name;
+ led->brightness = 0;
+ led->max_brightness = 1;
+ led->brightness_get = wiimote_leds_get;
+ led->brightness_set = wiimote_leds_set;
+
+ ret = led_classdev_register(dev, led);
+ if (ret) {
+ kfree(led);
+ goto err;
+ }
+ wdata->leds[i] = led;
+ }
+
+ return 0;
+
+err:
+ wiimote_leds_destroy(wdata);
+ return ret;
+}
+
static struct wiimote_data *wiimote_create(struct hid_device *hdev)
{
struct wiimote_data *wdata;
@@ -341,6 +444,8 @@
input_set_drvdata(wdata->input, wdata);
wdata->input->event = wiimote_input_event;
+ wdata->input->open = wiimote_input_open;
+ wdata->input->close = wiimote_input_close;
wdata->input->dev.parent = &wdata->hdev->dev;
wdata->input->id.bustype = wdata->hdev->bus;
wdata->input->id.vendor = wdata->hdev->vendor;
@@ -362,6 +467,12 @@
static void wiimote_destroy(struct wiimote_data *wdata)
{
+ wiimote_leds_destroy(wdata);
+
+ input_unregister_device(wdata->input);
+ cancel_work_sync(&wdata->worker);
+ hid_hw_stop(wdata->hdev);
+
kfree(wdata);
}
@@ -377,19 +488,6 @@
return -ENOMEM;
}
- ret = device_create_file(&hdev->dev, &dev_attr_led1);
- if (ret)
- goto err;
- ret = device_create_file(&hdev->dev, &dev_attr_led2);
- if (ret)
- goto err;
- ret = device_create_file(&hdev->dev, &dev_attr_led3);
- if (ret)
- goto err;
- ret = device_create_file(&hdev->dev, &dev_attr_led4);
- if (ret)
- goto err;
-
ret = hid_parse(hdev);
if (ret) {
hid_err(hdev, "HID parse failed\n");
@@ -408,9 +506,10 @@
goto err_stop;
}
- /* smp_wmb: Write wdata->xy first before wdata->ready is set to 1 */
- smp_wmb();
- atomic_set(&wdata->ready, 1);
+ ret = wiimote_leds_create(wdata);
+ if (ret)
+ goto err_free;
+
hid_info(hdev, "New device registered\n");
/* by default set led1 after device initialization */
@@ -420,15 +519,15 @@
return 0;
+err_free:
+ wiimote_destroy(wdata);
+ return ret;
+
err_stop:
hid_hw_stop(hdev);
err:
input_free_device(wdata->input);
- device_remove_file(&hdev->dev, &dev_attr_led1);
- device_remove_file(&hdev->dev, &dev_attr_led2);
- device_remove_file(&hdev->dev, &dev_attr_led3);
- device_remove_file(&hdev->dev, &dev_attr_led4);
- wiimote_destroy(wdata);
+ kfree(wdata);
return ret;
}
@@ -437,16 +536,6 @@
struct wiimote_data *wdata = hid_get_drvdata(hdev);
hid_info(hdev, "Device removed\n");
-
- device_remove_file(&hdev->dev, &dev_attr_led1);
- device_remove_file(&hdev->dev, &dev_attr_led2);
- device_remove_file(&hdev->dev, &dev_attr_led3);
- device_remove_file(&hdev->dev, &dev_attr_led4);
-
- hid_hw_stop(hdev);
- input_unregister_device(wdata->input);
-
- cancel_work_sync(&wdata->worker);
wiimote_destroy(wdata);
}
diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
index 621959d..4bdb5d4 100644
--- a/drivers/hid/usbhid/hid-quirks.c
+++ b/drivers/hid/usbhid/hid-quirks.c
@@ -89,6 +89,7 @@
{ USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_MULTI_TOUCH, HID_QUIRK_MULTI_INPUT },
{ USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS, HID_QUIRK_MULTI_INPUT },
+ { USB_VENDOR_ID_SIGMA_MICRO, USB_DEVICE_ID_SIGMA_MICRO_KEYBOARD, HID_QUIRK_NO_INIT_REPORTS },
{ 0, 0 }
};
diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c
index 0c731ca..b228e09 100644
--- a/drivers/i2c/busses/i2c-nomadik.c
+++ b/drivers/i2c/busses/i2c-nomadik.c
@@ -146,6 +146,7 @@
* @stop: stop condition
* @xfer_complete: acknowledge completion for a I2C message
* @result: controller propogated result
+ * @regulator: pointer to i2c regulator
* @busy: Busy doing transfer
*/
struct nmk_i2c_dev {
@@ -417,12 +418,12 @@
writel(readl(dev->virtbase + I2C_IMSCR) | irq_mask,
dev->virtbase + I2C_IMSCR);
- timeout = wait_for_completion_interruptible_timeout(
+ timeout = wait_for_completion_timeout(
&dev->xfer_complete, dev->adap.timeout);
if (timeout < 0) {
dev_err(&dev->pdev->dev,
- "wait_for_completion_interruptible_timeout"
+ "wait_for_completion_timeout"
"returned %d waiting for event\n", timeout);
status = timeout;
}
@@ -504,12 +505,12 @@
writel(readl(dev->virtbase + I2C_IMSCR) | irq_mask,
dev->virtbase + I2C_IMSCR);
- timeout = wait_for_completion_interruptible_timeout(
+ timeout = wait_for_completion_timeout(
&dev->xfer_complete, dev->adap.timeout);
if (timeout < 0) {
dev_err(&dev->pdev->dev,
- "wait_for_completion_interruptible_timeout"
+ "wait_for_completion_timeout "
"returned %d waiting for event\n", timeout);
status = timeout;
}
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 1a766cf..2dfb631 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -1139,41 +1139,12 @@
return 0;
}
-#ifdef CONFIG_SUSPEND
-static int omap_i2c_suspend(struct device *dev)
-{
- if (!pm_runtime_suspended(dev))
- if (dev->bus && dev->bus->pm && dev->bus->pm->runtime_suspend)
- dev->bus->pm->runtime_suspend(dev);
-
- return 0;
-}
-
-static int omap_i2c_resume(struct device *dev)
-{
- if (!pm_runtime_suspended(dev))
- if (dev->bus && dev->bus->pm && dev->bus->pm->runtime_resume)
- dev->bus->pm->runtime_resume(dev);
-
- return 0;
-}
-
-static struct dev_pm_ops omap_i2c_pm_ops = {
- .suspend = omap_i2c_suspend,
- .resume = omap_i2c_resume,
-};
-#define OMAP_I2C_PM_OPS (&omap_i2c_pm_ops)
-#else
-#define OMAP_I2C_PM_OPS NULL
-#endif
-
static struct platform_driver omap_i2c_driver = {
.probe = omap_i2c_probe,
.remove = omap_i2c_remove,
.driver = {
.name = "omap_i2c",
.owner = THIS_MODULE,
- .pm = OMAP_I2C_PM_OPS,
},
};
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 43f89ba..fe89c46 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -717,11 +717,13 @@
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_neigh *neigh;
- struct neighbour *n;
+ struct neighbour *n = NULL;
unsigned long flags;
- n = dst_get_neighbour(skb_dst(skb));
- if (likely(skb_dst(skb) && n)) {
+ if (likely(skb_dst(skb)))
+ n = dst_get_neighbour(skb_dst(skb));
+
+ if (likely(n)) {
if (unlikely(!*to_ipoib_neigh(n))) {
ipoib_path_lookup(skb, dev);
return NETDEV_TX_OK;
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c
index 8db008d..9c61b9c 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.c
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.c
@@ -101,13 +101,17 @@
/* verify PDU length */
datalen = ntoh24(hdr->dlength);
- if (datalen != rx_data_len) {
- printk(KERN_ERR "iscsi_iser: datalen %d (hdr) != %d (IB) \n",
- datalen, rx_data_len);
+ if (datalen > rx_data_len || (datalen + 4) < rx_data_len) {
+ iser_err("wrong datalen %d (hdr), %d (IB)\n",
+ datalen, rx_data_len);
rc = ISCSI_ERR_DATALEN;
goto error;
}
+ if (datalen != rx_data_len)
+ iser_dbg("aligned datalen (%d) hdr, %d (IB)\n",
+ datalen, rx_data_len);
+
/* read AHS */
ahslen = hdr->hlength * 4;
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h
index 342cbc1..db6f3ce 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.h
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.h
@@ -89,7 +89,7 @@
} while (0)
#define SHIFT_4K 12
-#define SIZE_4K (1UL << SHIFT_4K)
+#define SIZE_4K (1ULL << SHIFT_4K)
#define MASK_4K (~(SIZE_4K-1))
/* support up to 512KB in one RDMA */
diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c
index 5745b7f..f299de6 100644
--- a/drivers/infiniband/ulp/iser/iser_initiator.c
+++ b/drivers/infiniband/ulp/iser/iser_initiator.c
@@ -412,7 +412,7 @@
memcpy(iser_conn->ib_conn->login_buf, task->data,
task->data_count);
tx_dsg->addr = iser_conn->ib_conn->login_dma;
- tx_dsg->length = data_seg_len;
+ tx_dsg->length = task->data_count;
tx_dsg->lkey = device->mr->lkey;
mdesc->num_sge = 2;
}
diff --git a/drivers/input/joystick/analog.c b/drivers/input/joystick/analog.c
index 9882971..358cd7e 100644
--- a/drivers/input/joystick/analog.c
+++ b/drivers/input/joystick/analog.c
@@ -139,7 +139,7 @@
#include <linux/i8253.h>
#define GET_TIME(x) do { if (cpu_has_tsc) rdtscl(x); else x = get_time_pit(); } while (0)
-#define DELTA(x,y) (cpu_has_tsc ? ((y) - (x)) : ((x) - (y) + ((x) < (y) ? CLOCK_TICK_RATE / HZ : 0)))
+#define DELTA(x,y) (cpu_has_tsc ? ((y) - (x)) : ((x) - (y) + ((x) < (y) ? PIT_TICK_RATE / HZ : 0)))
#define TIME_NAME (cpu_has_tsc?"TSC":"PIT")
static unsigned int get_time_pit(void)
{
diff --git a/drivers/input/keyboard/ep93xx_keypad.c b/drivers/input/keyboard/ep93xx_keypad.c
index c8242dd..aa17e02 100644
--- a/drivers/input/keyboard/ep93xx_keypad.c
+++ b/drivers/input/keyboard/ep93xx_keypad.c
@@ -20,6 +20,7 @@
* flag.
*/
+#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/clk.h>
diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c
index f270447..a5a7791 100644
--- a/drivers/input/keyboard/tegra-kbc.c
+++ b/drivers/input/keyboard/tegra-kbc.c
@@ -702,7 +702,7 @@
err_free_mem_region:
release_mem_region(res->start, resource_size(res));
err_free_mem:
- input_free_device(kbc->idev);
+ input_free_device(input_dev);
kfree(kbc);
return err;
diff --git a/drivers/input/misc/ad714x-i2c.c b/drivers/input/misc/ad714x-i2c.c
index e21deb1..025417d 100644
--- a/drivers/input/misc/ad714x-i2c.c
+++ b/drivers/input/misc/ad714x-i2c.c
@@ -1,7 +1,7 @@
/*
* AD714X CapTouch Programmable Controller driver (I2C bus)
*
- * Copyright 2009 Analog Devices Inc.
+ * Copyright 2009-2011 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
@@ -27,54 +27,49 @@
static SIMPLE_DEV_PM_OPS(ad714x_i2c_pm, ad714x_i2c_suspend, ad714x_i2c_resume);
-static int ad714x_i2c_write(struct device *dev, unsigned short reg,
- unsigned short data)
+static int ad714x_i2c_write(struct ad714x_chip *chip,
+ unsigned short reg, unsigned short data)
{
- struct i2c_client *client = to_i2c_client(dev);
- int ret = 0;
- u8 *_reg = (u8 *)®
- u8 *_data = (u8 *)&data;
+ struct i2c_client *client = to_i2c_client(chip->dev);
+ int error;
- u8 tx[4] = {
- _reg[1],
- _reg[0],
- _data[1],
- _data[0]
- };
+ chip->xfer_buf[0] = cpu_to_be16(reg);
+ chip->xfer_buf[1] = cpu_to_be16(data);
- ret = i2c_master_send(client, tx, 4);
- if (ret < 0)
- dev_err(&client->dev, "I2C write error\n");
-
- return ret;
-}
-
-static int ad714x_i2c_read(struct device *dev, unsigned short reg,
- unsigned short *data)
-{
- struct i2c_client *client = to_i2c_client(dev);
- int ret = 0;
- u8 *_reg = (u8 *)®
- u8 *_data = (u8 *)data;
-
- u8 tx[2] = {
- _reg[1],
- _reg[0]
- };
- u8 rx[2];
-
- ret = i2c_master_send(client, tx, 2);
- if (ret >= 0)
- ret = i2c_master_recv(client, rx, 2);
-
- if (unlikely(ret < 0)) {
- dev_err(&client->dev, "I2C read error\n");
- } else {
- _data[0] = rx[1];
- _data[1] = rx[0];
+ error = i2c_master_send(client, (u8 *)chip->xfer_buf,
+ 2 * sizeof(*chip->xfer_buf));
+ if (unlikely(error < 0)) {
+ dev_err(&client->dev, "I2C write error: %d\n", error);
+ return error;
}
- return ret;
+ return 0;
+}
+
+static int ad714x_i2c_read(struct ad714x_chip *chip,
+ unsigned short reg, unsigned short *data, size_t len)
+{
+ struct i2c_client *client = to_i2c_client(chip->dev);
+ int i;
+ int error;
+
+ chip->xfer_buf[0] = cpu_to_be16(reg);
+
+ error = i2c_master_send(client, (u8 *)chip->xfer_buf,
+ sizeof(*chip->xfer_buf));
+ if (error >= 0)
+ error = i2c_master_recv(client, (u8 *)chip->xfer_buf,
+ len * sizeof(*chip->xfer_buf));
+
+ if (unlikely(error < 0)) {
+ dev_err(&client->dev, "I2C read error: %d\n", error);
+ return error;
+ }
+
+ for (i = 0; i < len; i++)
+ data[i] = be16_to_cpu(chip->xfer_buf[i]);
+
+ return 0;
}
static int __devinit ad714x_i2c_probe(struct i2c_client *client,
diff --git a/drivers/input/misc/ad714x-spi.c b/drivers/input/misc/ad714x-spi.c
index 4120dd5..875b508 100644
--- a/drivers/input/misc/ad714x-spi.c
+++ b/drivers/input/misc/ad714x-spi.c
@@ -1,12 +1,12 @@
/*
* AD714X CapTouch Programmable Controller driver (SPI bus)
*
- * Copyright 2009 Analog Devices Inc.
+ * Copyright 2009-2011 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
-#include <linux/input.h> /* BUS_I2C */
+#include <linux/input.h> /* BUS_SPI */
#include <linux/module.h>
#include <linux/spi/spi.h>
#include <linux/pm.h>
@@ -30,30 +30,68 @@
static SIMPLE_DEV_PM_OPS(ad714x_spi_pm, ad714x_spi_suspend, ad714x_spi_resume);
-static int ad714x_spi_read(struct device *dev, unsigned short reg,
- unsigned short *data)
+static int ad714x_spi_read(struct ad714x_chip *chip,
+ unsigned short reg, unsigned short *data, size_t len)
{
- struct spi_device *spi = to_spi_device(dev);
- unsigned short tx = AD714x_SPI_CMD_PREFIX | AD714x_SPI_READ | reg;
+ struct spi_device *spi = to_spi_device(chip->dev);
+ struct spi_message message;
+ struct spi_transfer xfer[2];
+ int i;
+ int error;
- return spi_write_then_read(spi, (u8 *)&tx, 2, (u8 *)data, 2);
+ spi_message_init(&message);
+ memset(xfer, 0, sizeof(xfer));
+
+ chip->xfer_buf[0] = cpu_to_be16(AD714x_SPI_CMD_PREFIX |
+ AD714x_SPI_READ | reg);
+ xfer[0].tx_buf = &chip->xfer_buf[0];
+ xfer[0].len = sizeof(chip->xfer_buf[0]);
+ spi_message_add_tail(&xfer[0], &message);
+
+ xfer[1].rx_buf = &chip->xfer_buf[1];
+ xfer[1].len = sizeof(chip->xfer_buf[1]) * len;
+ spi_message_add_tail(&xfer[1], &message);
+
+ error = spi_sync(spi, &message);
+ if (unlikely(error)) {
+ dev_err(chip->dev, "SPI read error: %d\n", error);
+ return error;
+ }
+
+ for (i = 0; i < len; i++)
+ data[i] = be16_to_cpu(chip->xfer_buf[i + 1]);
+
+ return 0;
}
-static int ad714x_spi_write(struct device *dev, unsigned short reg,
- unsigned short data)
+static int ad714x_spi_write(struct ad714x_chip *chip,
+ unsigned short reg, unsigned short data)
{
- struct spi_device *spi = to_spi_device(dev);
- unsigned short tx[2] = {
- AD714x_SPI_CMD_PREFIX | reg,
- data
- };
+ struct spi_device *spi = to_spi_device(chip->dev);
+ int error;
- return spi_write(spi, (u8 *)tx, 4);
+ chip->xfer_buf[0] = cpu_to_be16(AD714x_SPI_CMD_PREFIX | reg);
+ chip->xfer_buf[1] = cpu_to_be16(data);
+
+ error = spi_write(spi, (u8 *)chip->xfer_buf,
+ 2 * sizeof(*chip->xfer_buf));
+ if (unlikely(error)) {
+ dev_err(chip->dev, "SPI write error: %d\n", error);
+ return error;
+ }
+
+ return 0;
}
static int __devinit ad714x_spi_probe(struct spi_device *spi)
{
struct ad714x_chip *chip;
+ int err;
+
+ spi->bits_per_word = 8;
+ err = spi_setup(spi);
+ if (err < 0)
+ return err;
chip = ad714x_probe(&spi->dev, BUS_SPI, spi->irq,
ad714x_spi_read, ad714x_spi_write);
diff --git a/drivers/input/misc/ad714x.c b/drivers/input/misc/ad714x.c
index c3a62c4..ca42c7d2 100644
--- a/drivers/input/misc/ad714x.c
+++ b/drivers/input/misc/ad714x.c
@@ -1,7 +1,7 @@
/*
* AD714X CapTouch Programmable Controller driver supporting AD7142/3/7/8/7A
*
- * Copyright 2009 Analog Devices Inc.
+ * Copyright 2009-2011 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
@@ -59,7 +59,6 @@
#define STAGE11_AMBIENT 0x27D
#define PER_STAGE_REG_NUM 36
-#define STAGE_NUM 12
#define STAGE_CFGREG_NUM 8
#define SYS_CFGREG_NUM 8
@@ -124,27 +123,6 @@
* information to integrate all things which will be private data
* of spi/i2c device
*/
-struct ad714x_chip {
- unsigned short h_state;
- unsigned short l_state;
- unsigned short c_state;
- unsigned short adc_reg[STAGE_NUM];
- unsigned short amb_reg[STAGE_NUM];
- unsigned short sensor_val[STAGE_NUM];
-
- struct ad714x_platform_data *hw;
- struct ad714x_driver_data *sw;
-
- int irq;
- struct device *dev;
- ad714x_read_t read;
- ad714x_write_t write;
-
- struct mutex mutex;
-
- unsigned product;
- unsigned version;
-};
static void ad714x_use_com_int(struct ad714x_chip *ad714x,
int start_stage, int end_stage)
@@ -154,13 +132,13 @@
mask = ((1 << (end_stage + 1)) - 1) - ((1 << start_stage) - 1);
- ad714x->read(ad714x->dev, STG_COM_INT_EN_REG, &data);
+ ad714x->read(ad714x, STG_COM_INT_EN_REG, &data, 1);
data |= 1 << end_stage;
- ad714x->write(ad714x->dev, STG_COM_INT_EN_REG, data);
+ ad714x->write(ad714x, STG_COM_INT_EN_REG, data);
- ad714x->read(ad714x->dev, STG_HIGH_INT_EN_REG, &data);
+ ad714x->read(ad714x, STG_HIGH_INT_EN_REG, &data, 1);
data &= ~mask;
- ad714x->write(ad714x->dev, STG_HIGH_INT_EN_REG, data);
+ ad714x->write(ad714x, STG_HIGH_INT_EN_REG, data);
}
static void ad714x_use_thr_int(struct ad714x_chip *ad714x,
@@ -171,13 +149,13 @@
mask = ((1 << (end_stage + 1)) - 1) - ((1 << start_stage) - 1);
- ad714x->read(ad714x->dev, STG_COM_INT_EN_REG, &data);
+ ad714x->read(ad714x, STG_COM_INT_EN_REG, &data, 1);
data &= ~(1 << end_stage);
- ad714x->write(ad714x->dev, STG_COM_INT_EN_REG, data);
+ ad714x->write(ad714x, STG_COM_INT_EN_REG, data);
- ad714x->read(ad714x->dev, STG_HIGH_INT_EN_REG, &data);
+ ad714x->read(ad714x, STG_HIGH_INT_EN_REG, &data, 1);
data |= mask;
- ad714x->write(ad714x->dev, STG_HIGH_INT_EN_REG, data);
+ ad714x->write(ad714x, STG_HIGH_INT_EN_REG, data);
}
static int ad714x_cal_highest_stage(struct ad714x_chip *ad714x,
@@ -273,15 +251,16 @@
struct ad714x_slider_plat *hw = &ad714x->hw->slider[idx];
int i;
- for (i = hw->start_stage; i <= hw->end_stage; i++) {
- ad714x->read(ad714x->dev, CDC_RESULT_S0 + i,
- &ad714x->adc_reg[i]);
- ad714x->read(ad714x->dev,
- STAGE0_AMBIENT + i * PER_STAGE_REG_NUM,
- &ad714x->amb_reg[i]);
+ ad714x->read(ad714x, CDC_RESULT_S0 + hw->start_stage,
+ &ad714x->adc_reg[hw->start_stage],
+ hw->end_stage - hw->start_stage + 1);
- ad714x->sensor_val[i] = abs(ad714x->adc_reg[i] -
- ad714x->amb_reg[i]);
+ for (i = hw->start_stage; i <= hw->end_stage; i++) {
+ ad714x->read(ad714x, STAGE0_AMBIENT + i * PER_STAGE_REG_NUM,
+ &ad714x->amb_reg[i], 1);
+
+ ad714x->sensor_val[i] =
+ abs(ad714x->adc_reg[i] - ad714x->amb_reg[i]);
}
}
@@ -444,15 +423,16 @@
struct ad714x_wheel_plat *hw = &ad714x->hw->wheel[idx];
int i;
+ ad714x->read(ad714x, CDC_RESULT_S0 + hw->start_stage,
+ &ad714x->adc_reg[hw->start_stage],
+ hw->end_stage - hw->start_stage + 1);
+
for (i = hw->start_stage; i <= hw->end_stage; i++) {
- ad714x->read(ad714x->dev, CDC_RESULT_S0 + i,
- &ad714x->adc_reg[i]);
- ad714x->read(ad714x->dev,
- STAGE0_AMBIENT + i * PER_STAGE_REG_NUM,
- &ad714x->amb_reg[i]);
+ ad714x->read(ad714x, STAGE0_AMBIENT + i * PER_STAGE_REG_NUM,
+ &ad714x->amb_reg[i], 1);
if (ad714x->adc_reg[i] > ad714x->amb_reg[i])
- ad714x->sensor_val[i] = ad714x->adc_reg[i] -
- ad714x->amb_reg[i];
+ ad714x->sensor_val[i] =
+ ad714x->adc_reg[i] - ad714x->amb_reg[i];
else
ad714x->sensor_val[i] = 0;
}
@@ -597,15 +577,16 @@
struct ad714x_touchpad_plat *hw = &ad714x->hw->touchpad[idx];
int i;
+ ad714x->read(ad714x, CDC_RESULT_S0 + hw->x_start_stage,
+ &ad714x->adc_reg[hw->x_start_stage],
+ hw->x_end_stage - hw->x_start_stage + 1);
+
for (i = hw->x_start_stage; i <= hw->x_end_stage; i++) {
- ad714x->read(ad714x->dev, CDC_RESULT_S0 + i,
- &ad714x->adc_reg[i]);
- ad714x->read(ad714x->dev,
- STAGE0_AMBIENT + i * PER_STAGE_REG_NUM,
- &ad714x->amb_reg[i]);
+ ad714x->read(ad714x, STAGE0_AMBIENT + i * PER_STAGE_REG_NUM,
+ &ad714x->amb_reg[i], 1);
if (ad714x->adc_reg[i] > ad714x->amb_reg[i])
- ad714x->sensor_val[i] = ad714x->adc_reg[i] -
- ad714x->amb_reg[i];
+ ad714x->sensor_val[i] =
+ ad714x->adc_reg[i] - ad714x->amb_reg[i];
else
ad714x->sensor_val[i] = 0;
}
@@ -891,7 +872,7 @@
{
unsigned short data;
- ad714x->read(ad714x->dev, AD714X_PARTID_REG, &data);
+ ad714x->read(ad714x, AD714X_PARTID_REG, &data, 1);
switch (data & 0xFFF0) {
case AD7142_PARTID:
ad714x->product = 0x7142;
@@ -940,23 +921,20 @@
for (i = 0; i < STAGE_NUM; i++) {
reg_base = AD714X_STAGECFG_REG + i * STAGE_CFGREG_NUM;
for (j = 0; j < STAGE_CFGREG_NUM; j++)
- ad714x->write(ad714x->dev, reg_base + j,
+ ad714x->write(ad714x, reg_base + j,
ad714x->hw->stage_cfg_reg[i][j]);
}
for (i = 0; i < SYS_CFGREG_NUM; i++)
- ad714x->write(ad714x->dev, AD714X_SYSCFG_REG + i,
+ ad714x->write(ad714x, AD714X_SYSCFG_REG + i,
ad714x->hw->sys_cfg_reg[i]);
for (i = 0; i < SYS_CFGREG_NUM; i++)
- ad714x->read(ad714x->dev, AD714X_SYSCFG_REG + i,
- &data);
+ ad714x->read(ad714x, AD714X_SYSCFG_REG + i, &data, 1);
- ad714x->write(ad714x->dev, AD714X_STG_CAL_EN_REG, 0xFFF);
+ ad714x->write(ad714x, AD714X_STG_CAL_EN_REG, 0xFFF);
/* clear all interrupts */
- ad714x->read(ad714x->dev, STG_LOW_INT_STA_REG, &data);
- ad714x->read(ad714x->dev, STG_HIGH_INT_STA_REG, &data);
- ad714x->read(ad714x->dev, STG_COM_INT_STA_REG, &data);
+ ad714x->read(ad714x, STG_LOW_INT_STA_REG, &ad714x->l_state, 3);
}
static irqreturn_t ad714x_interrupt_thread(int irq, void *data)
@@ -966,9 +944,7 @@
mutex_lock(&ad714x->mutex);
- ad714x->read(ad714x->dev, STG_LOW_INT_STA_REG, &ad714x->l_state);
- ad714x->read(ad714x->dev, STG_HIGH_INT_STA_REG, &ad714x->h_state);
- ad714x->read(ad714x->dev, STG_COM_INT_STA_REG, &ad714x->c_state);
+ ad714x->read(ad714x, STG_LOW_INT_STA_REG, &ad714x->l_state, 3);
for (i = 0; i < ad714x->hw->button_num; i++)
ad714x_button_state_machine(ad714x, i);
@@ -1245,7 +1221,7 @@
mutex_lock(&ad714x->mutex);
data = ad714x->hw->sys_cfg_reg[AD714X_PWR_CTRL] | 0x3;
- ad714x->write(ad714x->dev, AD714X_PWR_CTRL, data);
+ ad714x->write(ad714x, AD714X_PWR_CTRL, data);
mutex_unlock(&ad714x->mutex);
@@ -1255,24 +1231,20 @@
int ad714x_enable(struct ad714x_chip *ad714x)
{
- unsigned short data;
-
dev_dbg(ad714x->dev, "%s enter\n", __func__);
mutex_lock(&ad714x->mutex);
/* resume to non-shutdown mode */
- ad714x->write(ad714x->dev, AD714X_PWR_CTRL,
+ ad714x->write(ad714x, AD714X_PWR_CTRL,
ad714x->hw->sys_cfg_reg[AD714X_PWR_CTRL]);
/* make sure the interrupt output line is not low level after resume,
* otherwise we will get no chance to enter falling-edge irq again
*/
- ad714x->read(ad714x->dev, STG_LOW_INT_STA_REG, &data);
- ad714x->read(ad714x->dev, STG_HIGH_INT_STA_REG, &data);
- ad714x->read(ad714x->dev, STG_COM_INT_STA_REG, &data);
+ ad714x->read(ad714x, STG_LOW_INT_STA_REG, &ad714x->l_state, 3);
mutex_unlock(&ad714x->mutex);
diff --git a/drivers/input/misc/ad714x.h b/drivers/input/misc/ad714x.h
index 45c54fb..3c85455 100644
--- a/drivers/input/misc/ad714x.h
+++ b/drivers/input/misc/ad714x.h
@@ -1,7 +1,7 @@
/*
* AD714X CapTouch Programmable Controller driver (bus interfaces)
*
- * Copyright 2009 Analog Devices Inc.
+ * Copyright 2009-2011 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
@@ -11,11 +11,40 @@
#include <linux/types.h>
+#define STAGE_NUM 12
+
struct device;
+struct ad714x_platform_data;
+struct ad714x_driver_data;
struct ad714x_chip;
-typedef int (*ad714x_read_t)(struct device *, unsigned short, unsigned short *);
-typedef int (*ad714x_write_t)(struct device *, unsigned short, unsigned short);
+typedef int (*ad714x_read_t)(struct ad714x_chip *, unsigned short, unsigned short *, size_t);
+typedef int (*ad714x_write_t)(struct ad714x_chip *, unsigned short, unsigned short);
+
+struct ad714x_chip {
+ unsigned short l_state;
+ unsigned short h_state;
+ unsigned short c_state;
+ unsigned short adc_reg[STAGE_NUM];
+ unsigned short amb_reg[STAGE_NUM];
+ unsigned short sensor_val[STAGE_NUM];
+
+ struct ad714x_platform_data *hw;
+ struct ad714x_driver_data *sw;
+
+ int irq;
+ struct device *dev;
+ ad714x_read_t read;
+ ad714x_write_t write;
+
+ struct mutex mutex;
+
+ unsigned product;
+ unsigned version;
+
+ __be16 xfer_buf[16] ____cacheline_aligned;
+
+};
int ad714x_disable(struct ad714x_chip *ad714x);
int ad714x_enable(struct ad714x_chip *ad714x);
diff --git a/drivers/input/misc/mma8450.c b/drivers/input/misc/mma8450.c
index 6c76cf7..0794778 100644
--- a/drivers/input/misc/mma8450.c
+++ b/drivers/input/misc/mma8450.c
@@ -234,7 +234,7 @@
{ .compatible = "fsl,mma8450", },
{ /* sentinel */ }
};
-MODULE_DEVICE_TABLE(i2c, mma8450_dt_ids);
+MODULE_DEVICE_TABLE(of, mma8450_dt_ids);
static struct i2c_driver mma8450_driver = {
.driver = {
diff --git a/drivers/input/misc/mpu3050.c b/drivers/input/misc/mpu3050.c
index b95fac1..f71dc72 100644
--- a/drivers/input/misc/mpu3050.c
+++ b/drivers/input/misc/mpu3050.c
@@ -282,7 +282,7 @@
err_pm_set_suspended:
pm_runtime_set_suspended(&client->dev);
err_free_mem:
- input_unregister_device(idev);
+ input_free_device(idev);
kfree(sensor);
return error;
}
diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c
index 3126983..da28018 100644
--- a/drivers/input/mouse/bcm5974.c
+++ b/drivers/input/mouse/bcm5974.c
@@ -67,6 +67,14 @@
#define USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI 0x0245
#define USB_DEVICE_ID_APPLE_WELLSPRING5_ISO 0x0246
#define USB_DEVICE_ID_APPLE_WELLSPRING5_JIS 0x0247
+/* MacbookAir4,2 (unibody, July 2011) */
+#define USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI 0x024c
+#define USB_DEVICE_ID_APPLE_WELLSPRING6_ISO 0x024d
+#define USB_DEVICE_ID_APPLE_WELLSPRING6_JIS 0x024e
+/* Macbook8,2 (unibody) */
+#define USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI 0x0252
+#define USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO 0x0253
+#define USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS 0x0254
#define BCM5974_DEVICE(prod) { \
.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | \
@@ -104,6 +112,14 @@
BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI),
BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5_ISO),
BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5_JIS),
+ /* MacbookAir4,2 */
+ BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI),
+ BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6_ISO),
+ BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6_JIS),
+ /* MacbookPro8,2 */
+ BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI),
+ BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO),
+ BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS),
/* Terminating entry */
{}
};
@@ -294,6 +310,30 @@
{ DIM_X, DIM_X / SN_COORD, -4415, 5050 },
{ DIM_Y, DIM_Y / SN_COORD, -55, 6680 }
},
+ {
+ USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI,
+ USB_DEVICE_ID_APPLE_WELLSPRING6_ISO,
+ USB_DEVICE_ID_APPLE_WELLSPRING6_JIS,
+ HAS_INTEGRATED_BUTTON,
+ 0x84, sizeof(struct bt_data),
+ 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS,
+ { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 },
+ { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
+ { DIM_X, DIM_X / SN_COORD, -4620, 5140 },
+ { DIM_Y, DIM_Y / SN_COORD, -150, 6600 }
+ },
+ {
+ USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI,
+ USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO,
+ USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS,
+ HAS_INTEGRATED_BUTTON,
+ 0x84, sizeof(struct bt_data),
+ 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS,
+ { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 },
+ { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
+ { DIM_X, DIM_X / SN_COORD, -4750, 5280 },
+ { DIM_Y, DIM_Y / SN_COORD, -150, 6730 }
+ },
{}
};
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index 449c0a4..d27c9d9 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -49,6 +49,7 @@
#define USB_REQ_GET_REPORT 0x01
#define USB_REQ_SET_REPORT 0x09
#define WAC_HID_FEATURE_REPORT 0x03
+#define WAC_MSG_RETRIES 5
static int usb_get_report(struct usb_interface *intf, unsigned char type,
unsigned char id, void *buf, int size)
@@ -165,7 +166,7 @@
report,
hid_desc->wDescriptorLength,
5000); /* 5 secs */
- } while (result < 0 && limit++ < 5);
+ } while (result < 0 && limit++ < WAC_MSG_RETRIES);
/* No need to parse the Descriptor. It isn't an error though */
if (result < 0)
@@ -319,24 +320,26 @@
int limit = 0, report_id = 2;
int error = -ENOMEM;
- rep_data = kmalloc(2, GFP_KERNEL);
+ rep_data = kmalloc(4, GFP_KERNEL);
if (!rep_data)
return error;
- /* ask to report tablet data if it is 2FGT Tablet PC or
+ /* ask to report tablet data if it is MT Tablet PC or
* not a Tablet PC */
if (features->type == TABLETPC2FG) {
do {
rep_data[0] = 3;
rep_data[1] = 4;
+ rep_data[2] = 0;
+ rep_data[3] = 0;
report_id = 3;
error = usb_set_report(intf, WAC_HID_FEATURE_REPORT,
- report_id, rep_data, 2);
+ report_id, rep_data, 4);
if (error >= 0)
error = usb_get_report(intf,
WAC_HID_FEATURE_REPORT, report_id,
- rep_data, 3);
- } while ((error < 0 || rep_data[1] != 4) && limit++ < 5);
+ rep_data, 4);
+ } while ((error < 0 || rep_data[1] != 4) && limit++ < WAC_MSG_RETRIES);
} else if (features->type != TABLETPC) {
do {
rep_data[0] = 2;
@@ -347,7 +350,7 @@
error = usb_get_report(intf,
WAC_HID_FEATURE_REPORT, report_id,
rep_data, 2);
- } while ((error < 0 || rep_data[1] != 2) && limit++ < 5);
+ } while ((error < 0 || rep_data[1] != 2) && limit++ < WAC_MSG_RETRIES);
}
kfree(rep_data);
diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
index 03ebcc8..c1c2f7b 100644
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -1460,6 +1460,9 @@
static const struct wacom_features wacom_features_0xD4 =
{ "Wacom Bamboo Pen", WACOM_PKGLEN_BBFUN, 14720, 9200, 1023,
63, BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
+static const struct wacom_features wacom_features_0xD5 =
+ { "Wacom Bamboo Pen 6x8", WACOM_PKGLEN_BBFUN, 21648, 13530, 1023,
+ 63, BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0xD6 =
{ "Wacom BambooPT 2FG 4x5", WACOM_PKGLEN_BBFUN, 14720, 9200, 1023,
63, BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
@@ -1564,6 +1567,7 @@
{ USB_DEVICE_WACOM(0xD2) },
{ USB_DEVICE_WACOM(0xD3) },
{ USB_DEVICE_WACOM(0xD4) },
+ { USB_DEVICE_WACOM(0xD5) },
{ USB_DEVICE_WACOM(0xD6) },
{ USB_DEVICE_WACOM(0xD7) },
{ USB_DEVICE_WACOM(0xD8) },
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index ae00604..f5d6685 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -244,6 +244,7 @@
int x;
int y;
int area;
+ int pressure;
};
/* Each client has this additional data */
@@ -536,6 +537,8 @@
finger[id].x);
input_report_abs(input_dev, ABS_MT_POSITION_Y,
finger[id].y);
+ input_report_abs(input_dev, ABS_MT_PRESSURE,
+ finger[id].pressure);
} else {
finger[id].status = 0;
}
@@ -546,6 +549,8 @@
if (status != MXT_RELEASE) {
input_report_abs(input_dev, ABS_X, finger[single_id].x);
input_report_abs(input_dev, ABS_Y, finger[single_id].y);
+ input_report_abs(input_dev,
+ ABS_PRESSURE, finger[single_id].pressure);
}
input_sync(input_dev);
@@ -560,6 +565,7 @@
int x;
int y;
int area;
+ int pressure;
/* Check the touch is present on the screen */
if (!(status & MXT_DETECT)) {
@@ -584,6 +590,7 @@
y = y >> 2;
area = message->message[4];
+ pressure = message->message[5];
dev_dbg(dev, "[%d] %s x: %d, y: %d, area: %d\n", id,
status & MXT_MOVE ? "moved" : "pressed",
@@ -594,6 +601,7 @@
finger[id].x = x;
finger[id].y = y;
finger[id].area = area;
+ finger[id].pressure = pressure;
mxt_input_report(data, id);
}
@@ -1116,6 +1124,8 @@
0, data->max_x, 0, 0);
input_set_abs_params(input_dev, ABS_Y,
0, data->max_y, 0, 0);
+ input_set_abs_params(input_dev, ABS_PRESSURE,
+ 0, 255, 0, 0);
/* For multi touch */
input_mt_init_slots(input_dev, MXT_MAX_FINGER);
@@ -1125,6 +1135,8 @@
0, data->max_x, 0, 0);
input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
0, data->max_y, 0, 0);
+ input_set_abs_params(input_dev, ABS_MT_PRESSURE,
+ 0, 255, 0, 0);
input_set_drvdata(input_dev, data);
i2c_set_clientdata(client, data);
diff --git a/drivers/input/touchscreen/max11801_ts.c b/drivers/input/touchscreen/max11801_ts.c
index 4f2713d..4627fe5 100644
--- a/drivers/input/touchscreen/max11801_ts.c
+++ b/drivers/input/touchscreen/max11801_ts.c
@@ -9,7 +9,8 @@
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*/
/*
diff --git a/drivers/input/touchscreen/tnetv107x-ts.c b/drivers/input/touchscreen/tnetv107x-ts.c
index 089b0a0..0e8f63e 100644
--- a/drivers/input/touchscreen/tnetv107x-ts.c
+++ b/drivers/input/touchscreen/tnetv107x-ts.c
@@ -13,6 +13,7 @@
* GNU General Public License for more details.
*/
+#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/errno.h>
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 38a83ac..43f2ea5 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3419,9 +3419,27 @@
static int bond_open(struct net_device *bond_dev)
{
struct bonding *bond = netdev_priv(bond_dev);
+ struct slave *slave;
+ int i;
bond->kill_timers = 0;
+ /* reset slave->backup and slave->inactive */
+ read_lock(&bond->lock);
+ if (bond->slave_cnt > 0) {
+ read_lock(&bond->curr_slave_lock);
+ bond_for_each_slave(bond, slave, i) {
+ if ((bond->params.mode == BOND_MODE_ACTIVEBACKUP)
+ && (slave != bond->curr_active_slave)) {
+ bond_set_slave_inactive_flags(slave);
+ } else {
+ bond_set_slave_active_flags(slave);
+ }
+ }
+ read_unlock(&bond->curr_slave_lock);
+ }
+ read_unlock(&bond->lock);
+
INIT_DELAYED_WORK(&bond->mcast_work, bond_resend_igmp_join_requests_delayed);
if (bond_is_lb(bond)) {
diff --git a/drivers/net/can/sja1000/plx_pci.c b/drivers/net/can/sja1000/plx_pci.c
index 231385b..c7f3d4e 100644
--- a/drivers/net/can/sja1000/plx_pci.c
+++ b/drivers/net/can/sja1000/plx_pci.c
@@ -408,7 +408,7 @@
struct sja1000_priv *priv;
int i = 0;
- for (i = 0; i < card->channels; i++) {
+ for (i = 0; i < PLX_PCI_MAX_CHAN; i++) {
dev = card->net_dev[i];
if (!dev)
continue;
@@ -536,7 +536,6 @@
if (err) {
dev_err(&pdev->dev, "Registering device failed "
"(err=%d)\n", err);
- free_sja1000dev(dev);
goto failure_cleanup;
}
@@ -549,6 +548,7 @@
dev_err(&pdev->dev, "Channel #%d not detected\n",
i + 1);
free_sja1000dev(dev);
+ card->net_dev[i] = NULL;
}
}
diff --git a/drivers/net/e1000e/e1000.h b/drivers/net/e1000e/e1000.h
index 35916f4..8533ad7 100644
--- a/drivers/net/e1000e/e1000.h
+++ b/drivers/net/e1000e/e1000.h
@@ -155,6 +155,9 @@
#define HV_M_STATUS_SPEED_1000 0x0200
#define HV_M_STATUS_LINK_UP 0x0040
+#define E1000_ICH_FWSM_PCIM2PCI 0x01000000 /* ME PCIm-to-PCI active */
+#define E1000_ICH_FWSM_PCIM2PCI_COUNT 2000
+
/* Time to wait before putting the device into D3 if there's no link (in ms). */
#define LINK_TIMEOUT 100
@@ -454,6 +457,7 @@
#define FLAG2_DISABLE_AIM (1 << 8)
#define FLAG2_CHECK_PHY_HANG (1 << 9)
#define FLAG2_NO_DISABLE_RX (1 << 10)
+#define FLAG2_PCIM2PCI_ARBITER_WA (1 << 11)
#define E1000_RX_DESC_PS(R, i) \
(&(((union e1000_rx_desc_packet_split *)((R).desc))[i]))
diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c
index 4e36978..54add27 100644
--- a/drivers/net/e1000e/ich8lan.c
+++ b/drivers/net/e1000e/ich8lan.c
@@ -137,8 +137,9 @@
#define HV_PM_CTRL PHY_REG(770, 17)
/* PHY Low Power Idle Control */
-#define I82579_LPI_CTRL PHY_REG(772, 20)
-#define I82579_LPI_CTRL_ENABLE_MASK 0x6000
+#define I82579_LPI_CTRL PHY_REG(772, 20)
+#define I82579_LPI_CTRL_ENABLE_MASK 0x6000
+#define I82579_LPI_CTRL_FORCE_PLL_LOCK_COUNT 0x80
/* EMI Registers */
#define I82579_EMI_ADDR 0x10
@@ -163,6 +164,11 @@
#define HV_KMRN_MODE_CTRL PHY_REG(769, 16)
#define HV_KMRN_MDIO_SLOW 0x0400
+/* KMRN FIFO Control and Status */
+#define HV_KMRN_FIFO_CTRLSTA PHY_REG(770, 16)
+#define HV_KMRN_FIFO_CTRLSTA_PREAMBLE_MASK 0x7000
+#define HV_KMRN_FIFO_CTRLSTA_PREAMBLE_SHIFT 12
+
/* ICH GbE Flash Hardware Sequencing Flash Status Register bit breakdown */
/* Offset 04h HSFSTS */
union ich8_hws_flash_status {
@@ -657,6 +663,7 @@
struct e1000_mac_info *mac = &hw->mac;
s32 ret_val;
bool link;
+ u16 phy_reg;
/*
* We only want to go out to the PHY registers to see if Auto-Neg
@@ -689,16 +696,35 @@
mac->get_link_status = false;
- if (hw->phy.type == e1000_phy_82578) {
- ret_val = e1000_link_stall_workaround_hv(hw);
- if (ret_val)
- goto out;
- }
-
- if (hw->mac.type == e1000_pch2lan) {
+ switch (hw->mac.type) {
+ case e1000_pch2lan:
ret_val = e1000_k1_workaround_lv(hw);
if (ret_val)
goto out;
+ /* fall-thru */
+ case e1000_pchlan:
+ if (hw->phy.type == e1000_phy_82578) {
+ ret_val = e1000_link_stall_workaround_hv(hw);
+ if (ret_val)
+ goto out;
+ }
+
+ /*
+ * Workaround for PCHx parts in half-duplex:
+ * Set the number of preambles removed from the packet
+ * when it is passed from the PHY to the MAC to prevent
+ * the MAC from misinterpreting the packet type.
+ */
+ e1e_rphy(hw, HV_KMRN_FIFO_CTRLSTA, &phy_reg);
+ phy_reg &= ~HV_KMRN_FIFO_CTRLSTA_PREAMBLE_MASK;
+
+ if ((er32(STATUS) & E1000_STATUS_FD) != E1000_STATUS_FD)
+ phy_reg |= (1 << HV_KMRN_FIFO_CTRLSTA_PREAMBLE_SHIFT);
+
+ e1e_wphy(hw, HV_KMRN_FIFO_CTRLSTA, phy_reg);
+ break;
+ default:
+ break;
}
/*
@@ -788,6 +814,11 @@
(adapter->hw.phy.type == e1000_phy_igp_3))
adapter->flags |= FLAG_LSC_GIG_SPEED_DROP;
+ /* Enable workaround for 82579 w/ ME enabled */
+ if ((adapter->hw.mac.type == e1000_pch2lan) &&
+ (er32(FWSM) & E1000_ICH_FWSM_FW_VALID))
+ adapter->flags2 |= FLAG2_PCIM2PCI_ARBITER_WA;
+
/* Disable EEE by default until IEEE802.3az spec is finalized */
if (adapter->flags2 & FLAG2_HAS_EEE)
adapter->hw.dev_spec.ich8lan.eee_disable = true;
@@ -1355,7 +1386,7 @@
return ret_val;
/* Preamble tuning for SSC */
- ret_val = e1e_wphy(hw, PHY_REG(770, 16), 0xA204);
+ ret_val = e1e_wphy(hw, HV_KMRN_FIFO_CTRLSTA, 0xA204);
if (ret_val)
return ret_val;
}
@@ -1645,6 +1676,7 @@
s32 ret_val = 0;
u16 status_reg = 0;
u32 mac_reg;
+ u16 phy_reg;
if (hw->mac.type != e1000_pch2lan)
goto out;
@@ -1659,12 +1691,19 @@
mac_reg = er32(FEXTNVM4);
mac_reg &= ~E1000_FEXTNVM4_BEACON_DURATION_MASK;
- if (status_reg & HV_M_STATUS_SPEED_1000)
- mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_8USEC;
- else
- mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_16USEC;
+ ret_val = e1e_rphy(hw, I82579_LPI_CTRL, &phy_reg);
+ if (ret_val)
+ goto out;
+ if (status_reg & HV_M_STATUS_SPEED_1000) {
+ mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_8USEC;
+ phy_reg &= ~I82579_LPI_CTRL_FORCE_PLL_LOCK_COUNT;
+ } else {
+ mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_16USEC;
+ phy_reg |= I82579_LPI_CTRL_FORCE_PLL_LOCK_COUNT;
+ }
ew32(FEXTNVM4, mac_reg);
+ ret_val = e1e_wphy(hw, I82579_LPI_CTRL, phy_reg);
}
out:
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 362f703..2198e61 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -519,6 +519,63 @@
}
/**
+ * e1000e_update_tail_wa - helper function for e1000e_update_[rt]dt_wa()
+ * @hw: pointer to the HW structure
+ * @tail: address of tail descriptor register
+ * @i: value to write to tail descriptor register
+ *
+ * When updating the tail register, the ME could be accessing Host CSR
+ * registers at the same time. Normally, this is handled in h/w by an
+ * arbiter but on some parts there is a bug that acknowledges Host accesses
+ * later than it should which could result in the descriptor register to
+ * have an incorrect value. Workaround this by checking the FWSM register
+ * which has bit 24 set while ME is accessing Host CSR registers, wait
+ * if it is set and try again a number of times.
+ **/
+static inline s32 e1000e_update_tail_wa(struct e1000_hw *hw, u8 __iomem * tail,
+ unsigned int i)
+{
+ unsigned int j = 0;
+
+ while ((j++ < E1000_ICH_FWSM_PCIM2PCI_COUNT) &&
+ (er32(FWSM) & E1000_ICH_FWSM_PCIM2PCI))
+ udelay(50);
+
+ writel(i, tail);
+
+ if ((j == E1000_ICH_FWSM_PCIM2PCI_COUNT) && (i != readl(tail)))
+ return E1000_ERR_SWFW_SYNC;
+
+ return 0;
+}
+
+static void e1000e_update_rdt_wa(struct e1000_adapter *adapter, unsigned int i)
+{
+ u8 __iomem *tail = (adapter->hw.hw_addr + adapter->rx_ring->tail);
+ struct e1000_hw *hw = &adapter->hw;
+
+ if (e1000e_update_tail_wa(hw, tail, i)) {
+ u32 rctl = er32(RCTL);
+ ew32(RCTL, rctl & ~E1000_RCTL_EN);
+ e_err("ME firmware caused invalid RDT - resetting\n");
+ schedule_work(&adapter->reset_task);
+ }
+}
+
+static void e1000e_update_tdt_wa(struct e1000_adapter *adapter, unsigned int i)
+{
+ u8 __iomem *tail = (adapter->hw.hw_addr + adapter->tx_ring->tail);
+ struct e1000_hw *hw = &adapter->hw;
+
+ if (e1000e_update_tail_wa(hw, tail, i)) {
+ u32 tctl = er32(TCTL);
+ ew32(TCTL, tctl & ~E1000_TCTL_EN);
+ e_err("ME firmware caused invalid TDT - resetting\n");
+ schedule_work(&adapter->reset_task);
+ }
+}
+
+/**
* e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
* @adapter: address of board private structure
**/
@@ -573,7 +630,10 @@
* such as IA-64).
*/
wmb();
- writel(i, adapter->hw.hw_addr + rx_ring->tail);
+ if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
+ e1000e_update_rdt_wa(adapter, i);
+ else
+ writel(i, adapter->hw.hw_addr + rx_ring->tail);
}
i++;
if (i == rx_ring->count)
@@ -673,7 +733,11 @@
* such as IA-64).
*/
wmb();
- writel(i << 1, adapter->hw.hw_addr + rx_ring->tail);
+ if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
+ e1000e_update_rdt_wa(adapter, i << 1);
+ else
+ writel(i << 1,
+ adapter->hw.hw_addr + rx_ring->tail);
}
i++;
@@ -756,7 +820,10 @@
* applicable for weak-ordered memory model archs,
* such as IA-64). */
wmb();
- writel(i, adapter->hw.hw_addr + rx_ring->tail);
+ if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
+ e1000e_update_rdt_wa(adapter, i);
+ else
+ writel(i, adapter->hw.hw_addr + rx_ring->tail);
}
}
@@ -4689,7 +4756,12 @@
wmb();
tx_ring->next_to_use = i;
- writel(i, adapter->hw.hw_addr + tx_ring->tail);
+
+ if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
+ e1000e_update_tdt_wa(adapter, i);
+ else
+ writel(i, adapter->hw.hw_addr + tx_ring->tail);
+
/*
* we need this if more than one processor can write to our tail
* at a time, it synchronizes IO on IA64/Altix systems
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index e55df30..6d5fbd4 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -5615,7 +5615,8 @@
goto out_error;
}
- nv_vlan_mode(dev, dev->features);
+ if (id->driver_data & DEV_HAS_VLAN)
+ nv_vlan_mode(dev, dev->features);
netif_carrier_off(dev);
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 2659daa..31d5c57 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -2710,8 +2710,13 @@
/* Tell the skb what kind of packet this is */
skb->protocol = eth_type_trans(skb, dev);
- /* Set vlan tag */
- if (fcb->flags & RXFCB_VLN)
+ /*
+ * There's need to check for NETIF_F_HW_VLAN_RX here.
+ * Even if vlan rx accel is disabled, on some chips
+ * RXFCB_VLN is pseudo randomly set.
+ */
+ if (dev->features & NETIF_F_HW_VLAN_RX &&
+ fcb->flags & RXFCB_VLN)
__vlan_hwaccel_put_tag(skb, fcb->vlctl);
/* Send the packet up the stack */
diff --git a/drivers/net/gianfar_ethtool.c b/drivers/net/gianfar_ethtool.c
index 6e35069..25a8c2a 100644
--- a/drivers/net/gianfar_ethtool.c
+++ b/drivers/net/gianfar_ethtool.c
@@ -686,10 +686,21 @@
{
unsigned int last_rule_idx = priv->cur_filer_idx;
unsigned int cmp_rqfpr;
- unsigned int local_rqfpr[MAX_FILER_IDX + 1];
- unsigned int local_rqfcr[MAX_FILER_IDX + 1];
+ unsigned int *local_rqfpr;
+ unsigned int *local_rqfcr;
int i = 0x0, k = 0x0;
int j = MAX_FILER_IDX, l = 0x0;
+ int ret = 1;
+
+ local_rqfpr = kmalloc(sizeof(unsigned int) * (MAX_FILER_IDX + 1),
+ GFP_KERNEL);
+ local_rqfcr = kmalloc(sizeof(unsigned int) * (MAX_FILER_IDX + 1),
+ GFP_KERNEL);
+ if (!local_rqfpr || !local_rqfcr) {
+ pr_err("Out of memory\n");
+ ret = 0;
+ goto err;
+ }
switch (class) {
case TCP_V4_FLOW:
@@ -706,7 +717,8 @@
break;
default:
pr_err("Right now this class is not supported\n");
- return 0;
+ ret = 0;
+ goto err;
}
for (i = 0; i < MAX_FILER_IDX + 1; i++) {
@@ -721,7 +733,8 @@
if (i == MAX_FILER_IDX + 1) {
pr_err("No parse rule found, can't create hash rules\n");
- return 0;
+ ret = 0;
+ goto err;
}
/* If a match was found, then it begins the starting of a cluster rule
@@ -765,7 +778,10 @@
priv->cur_filer_idx = priv->cur_filer_idx - 1;
}
- return 1;
+err:
+ kfree(local_rqfcr);
+ kfree(local_rqfpr);
+ return ret;
}
static int gfar_set_hash_opts(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index e86297b..2279039 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -1459,8 +1459,10 @@
if (ixgbe_rx_is_fcoe(adapter, rx_desc)) {
ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb,
staterr);
- if (!ddp_bytes)
+ if (!ddp_bytes) {
+ dev_kfree_skb_any(skb);
goto next_desc;
+ }
}
#endif /* IXGBE_FCOE */
ixgbe_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc);
diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c
index ad35c21..190f619 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -21,6 +21,7 @@
*/
#include <linux/init.h>
+#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <linux/etherdevice.h>
#include <linux/delay.h>
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index a03336e..f06fb78 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -228,23 +228,40 @@
if (ctx->rx_max != le32_to_cpu(ctx->ncm_parm.dwNtbInMaxSize)) {
if (flags & USB_CDC_NCM_NCAP_NTB_INPUT_SIZE) {
- struct usb_cdc_ncm_ndp_input_size ndp_in_sz;
- err = usb_control_msg(ctx->udev,
- usb_sndctrlpipe(ctx->udev, 0),
- USB_CDC_SET_NTB_INPUT_SIZE,
- USB_TYPE_CLASS | USB_DIR_OUT
- | USB_RECIP_INTERFACE,
- 0, iface_no, &ndp_in_sz, 8, 1000);
- } else {
- __le32 dwNtbInMaxSize = cpu_to_le32(ctx->rx_max);
- err = usb_control_msg(ctx->udev,
- usb_sndctrlpipe(ctx->udev, 0),
- USB_CDC_SET_NTB_INPUT_SIZE,
- USB_TYPE_CLASS | USB_DIR_OUT
- | USB_RECIP_INTERFACE,
- 0, iface_no, &dwNtbInMaxSize, 4, 1000);
- }
+ struct usb_cdc_ncm_ndp_input_size *ndp_in_sz;
+ ndp_in_sz = kzalloc(sizeof(*ndp_in_sz), GFP_KERNEL);
+ if (!ndp_in_sz) {
+ err = -ENOMEM;
+ goto size_err;
+ }
+
+ err = usb_control_msg(ctx->udev,
+ usb_sndctrlpipe(ctx->udev, 0),
+ USB_CDC_SET_NTB_INPUT_SIZE,
+ USB_TYPE_CLASS | USB_DIR_OUT
+ | USB_RECIP_INTERFACE,
+ 0, iface_no, ndp_in_sz, 8, 1000);
+ kfree(ndp_in_sz);
+ } else {
+ __le32 *dwNtbInMaxSize;
+ dwNtbInMaxSize = kzalloc(sizeof(*dwNtbInMaxSize),
+ GFP_KERNEL);
+ if (!dwNtbInMaxSize) {
+ err = -ENOMEM;
+ goto size_err;
+ }
+ *dwNtbInMaxSize = cpu_to_le32(ctx->rx_max);
+
+ err = usb_control_msg(ctx->udev,
+ usb_sndctrlpipe(ctx->udev, 0),
+ USB_CDC_SET_NTB_INPUT_SIZE,
+ USB_TYPE_CLASS | USB_DIR_OUT
+ | USB_RECIP_INTERFACE,
+ 0, iface_no, dwNtbInMaxSize, 4, 1000);
+ kfree(dwNtbInMaxSize);
+ }
+size_err:
if (err < 0)
pr_debug("Setting NTB Input Size failed\n");
}
@@ -325,19 +342,29 @@
/* set Max Datagram Size (MTU) */
if (flags & USB_CDC_NCM_NCAP_MAX_DATAGRAM_SIZE) {
- __le16 max_datagram_size;
+ __le16 *max_datagram_size;
u16 eth_max_sz = le16_to_cpu(ctx->ether_desc->wMaxSegmentSize);
+
+ max_datagram_size = kzalloc(sizeof(*max_datagram_size),
+ GFP_KERNEL);
+ if (!max_datagram_size) {
+ err = -ENOMEM;
+ goto max_dgram_err;
+ }
+
err = usb_control_msg(ctx->udev, usb_rcvctrlpipe(ctx->udev, 0),
USB_CDC_GET_MAX_DATAGRAM_SIZE,
USB_TYPE_CLASS | USB_DIR_IN
| USB_RECIP_INTERFACE,
- 0, iface_no, &max_datagram_size,
+ 0, iface_no, max_datagram_size,
2, 1000);
if (err < 0) {
pr_debug("GET_MAX_DATAGRAM_SIZE failed, use size=%u\n",
CDC_NCM_MIN_DATAGRAM_SIZE);
+ kfree(max_datagram_size);
} else {
- ctx->max_datagram_size = le16_to_cpu(max_datagram_size);
+ ctx->max_datagram_size =
+ le16_to_cpu(*max_datagram_size);
/* Check Eth descriptor value */
if (eth_max_sz < CDC_NCM_MAX_DATAGRAM_SIZE) {
if (ctx->max_datagram_size > eth_max_sz)
@@ -360,8 +387,10 @@
USB_TYPE_CLASS | USB_DIR_OUT
| USB_RECIP_INTERFACE,
0,
- iface_no, &max_datagram_size,
+ iface_no, max_datagram_size,
2, 1000);
+ kfree(max_datagram_size);
+max_dgram_err:
if (err < 0)
pr_debug("SET_MAX_DATAGRAM_SIZE failed\n");
}
diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c
index deb1eca..7c5336c 100644
--- a/drivers/net/via-velocity.c
+++ b/drivers/net/via-velocity.c
@@ -515,10 +515,6 @@
mac_set_cam_mask(regs, vptr->mCAMmask);
/* Enable VCAMs */
-
- if (test_bit(0, vptr->active_vlans))
- WORD_REG_BITS_ON(MCFG_RTGOPT, ®s->MCFG);
-
for_each_set_bit(vid, vptr->active_vlans, VLAN_N_VID) {
mac_set_vlan_cam(regs, i, (u8 *) &vid);
vptr->vCAMmask[i / 8] |= 0x1 << (i % 8);
diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index 1cbacb3..0959583 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -1929,14 +1929,17 @@
vmxnet3_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
- u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
- unsigned long flags;
- VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid);
- spin_lock_irqsave(&adapter->cmd_lock, flags);
- VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
- VMXNET3_CMD_UPDATE_VLAN_FILTERS);
- spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+ if (!(netdev->flags & IFF_PROMISC)) {
+ u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
+ unsigned long flags;
+
+ VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid);
+ spin_lock_irqsave(&adapter->cmd_lock, flags);
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_VLAN_FILTERS);
+ spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+ }
set_bit(vid, adapter->active_vlans);
}
@@ -1946,14 +1949,17 @@
vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
{
struct vmxnet3_adapter *adapter = netdev_priv(netdev);
- u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
- unsigned long flags;
- VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid);
- spin_lock_irqsave(&adapter->cmd_lock, flags);
- VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
- VMXNET3_CMD_UPDATE_VLAN_FILTERS);
- spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+ if (!(netdev->flags & IFF_PROMISC)) {
+ u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable;
+ unsigned long flags;
+
+ VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid);
+ spin_lock_irqsave(&adapter->cmd_lock, flags);
+ VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
+ VMXNET3_CMD_UPDATE_VLAN_FILTERS);
+ spin_unlock_irqrestore(&adapter->cmd_lock, flags);
+ }
clear_bit(vid, adapter->active_vlans);
}
diff --git a/drivers/net/wireless/iwlwifi/iwl-pci.c b/drivers/net/wireless/iwlwifi/iwl-pci.c
index 69d4ec4..2fdbffa 100644
--- a/drivers/net/wireless/iwlwifi/iwl-pci.c
+++ b/drivers/net/wireless/iwlwifi/iwl-pci.c
@@ -478,27 +478,22 @@
return err;
}
-static void iwl_pci_down(struct iwl_bus *bus)
-{
- struct iwl_pci_bus *pci_bus = (struct iwl_pci_bus *) bus->bus_specific;
-
- pci_disable_msi(pci_bus->pci_dev);
- pci_iounmap(pci_bus->pci_dev, pci_bus->hw_base);
- pci_release_regions(pci_bus->pci_dev);
- pci_disable_device(pci_bus->pci_dev);
- pci_set_drvdata(pci_bus->pci_dev, NULL);
-
- kfree(bus);
-}
-
static void __devexit iwl_pci_remove(struct pci_dev *pdev)
{
struct iwl_priv *priv = pci_get_drvdata(pdev);
- void *bus_specific = priv->bus->bus_specific;
+ struct iwl_bus *bus = priv->bus;
+ struct iwl_pci_bus *pci_bus = IWL_BUS_GET_PCI_BUS(bus);
+ struct pci_dev *pci_dev = IWL_BUS_GET_PCI_DEV(bus);
iwl_remove(priv);
- iwl_pci_down(bus_specific);
+ pci_disable_msi(pci_dev);
+ pci_iounmap(pci_dev, pci_bus->hw_base);
+ pci_release_regions(pci_dev);
+ pci_disable_device(pci_dev);
+ pci_set_drvdata(pci_dev, NULL);
+
+ kfree(bus);
}
#ifdef CONFIG_PM
diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index 9395631..dbf501c 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -464,6 +464,15 @@
int wcid, ack, pid;
int tx_wcid, tx_ack, tx_pid;
+ if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
+ !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags)) {
+ WARNING(entry->queue->rt2x00dev,
+ "Data pending for entry %u in queue %u\n",
+ entry->entry_idx, entry->queue->qid);
+ cond_resched();
+ return false;
+ }
+
wcid = rt2x00_get_field32(reg, TX_STA_FIFO_WCID);
ack = rt2x00_get_field32(reg, TX_STA_FIFO_TX_ACK_REQUIRED);
pid = rt2x00_get_field32(reg, TX_STA_FIFO_PID_TYPE);
@@ -529,12 +538,11 @@
entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
if (rt2800usb_txdone_entry_check(entry, reg))
break;
+ entry = NULL;
}
- if (!entry || rt2x00queue_empty(queue))
- break;
-
- rt2800_txdone_entry(entry, reg);
+ if (entry)
+ rt2800_txdone_entry(entry, reg);
}
}
@@ -558,8 +566,10 @@
while (!rt2x00queue_empty(queue)) {
entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
- if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags))
+ if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
+ !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
break;
+
if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags))
rt2x00lib_txdone_noinfo(entry, TXDONE_FAILURE);
else if (rt2x00queue_status_timeout(entry))
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c
index b6b4542..7fbb55c 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.c
@@ -262,23 +262,20 @@
struct queue_entry *entry = (struct queue_entry *)urb->context;
struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
- if (!test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags))
+ if (!test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags))
return;
-
- if (rt2x00dev->ops->lib->tx_dma_done)
- rt2x00dev->ops->lib->tx_dma_done(entry);
-
- /*
- * Report the frame as DMA done
- */
- rt2x00lib_dmadone(entry);
-
/*
* Check if the frame was correctly uploaded
*/
if (urb->status)
set_bit(ENTRY_DATA_IO_FAILED, &entry->flags);
+ /*
+ * Report the frame as DMA done
+ */
+ rt2x00lib_dmadone(entry);
+ if (rt2x00dev->ops->lib->tx_dma_done)
+ rt2x00dev->ops->lib->tx_dma_done(entry);
/*
* Schedule the delayed work for reading the TX status
* from the device.
diff --git a/drivers/net/wireless/wl12xx/acx.c b/drivers/net/wireless/wl12xx/acx.c
index 7e33f1f..34f6ab5 100644
--- a/drivers/net/wireless/wl12xx/acx.c
+++ b/drivers/net/wireless/wl12xx/acx.c
@@ -77,8 +77,6 @@
auth->sleep_auth = sleep_auth;
ret = wl1271_cmd_configure(wl, ACX_SLEEP_AUTH, auth, sizeof(*auth));
- if (ret < 0)
- return ret;
out:
kfree(auth);
@@ -624,10 +622,8 @@
ret = wl1271_cmd_configure(wl, ACX_CCA_THRESHOLD,
detection, sizeof(*detection));
- if (ret < 0) {
+ if (ret < 0)
wl1271_warning("failed to set cca threshold: %d", ret);
- return ret;
- }
out:
kfree(detection);
diff --git a/drivers/net/wireless/wl12xx/testmode.c b/drivers/net/wireless/wl12xx/testmode.c
index 5d5e1ef..88add68 100644
--- a/drivers/net/wireless/wl12xx/testmode.c
+++ b/drivers/net/wireless/wl12xx/testmode.c
@@ -139,12 +139,15 @@
if (ret < 0) {
wl1271_warning("testmode cmd interrogate failed: %d", ret);
+ kfree(cmd);
return ret;
}
skb = cfg80211_testmode_alloc_reply_skb(wl->hw->wiphy, sizeof(*cmd));
- if (!skb)
+ if (!skb) {
+ kfree(cmd);
return -ENOMEM;
+ }
NLA_PUT(skb, WL1271_TM_ATTR_DATA, sizeof(*cmd), cmd);
diff --git a/drivers/pci/hotplug/pcihp_slot.c b/drivers/pci/hotplug/pcihp_slot.c
index 749fdf0..753b21a 100644
--- a/drivers/pci/hotplug/pcihp_slot.c
+++ b/drivers/pci/hotplug/pcihp_slot.c
@@ -158,47 +158,6 @@
*/
}
-/* Program PCIE MaxPayload setting on device: ensure parent maxpayload <= device */
-static int pci_set_payload(struct pci_dev *dev)
-{
- int pos, ppos;
- u16 pctl, psz;
- u16 dctl, dsz, dcap, dmax;
- struct pci_dev *parent;
-
- parent = dev->bus->self;
- pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
- if (!pos)
- return 0;
-
- /* Read Device MaxPayload capability and setting */
- pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &dctl);
- pci_read_config_word(dev, pos + PCI_EXP_DEVCAP, &dcap);
- dsz = (dctl & PCI_EXP_DEVCTL_PAYLOAD) >> 5;
- dmax = (dcap & PCI_EXP_DEVCAP_PAYLOAD);
-
- /* Read Parent MaxPayload setting */
- ppos = pci_find_capability(parent, PCI_CAP_ID_EXP);
- if (!ppos)
- return 0;
- pci_read_config_word(parent, ppos + PCI_EXP_DEVCTL, &pctl);
- psz = (pctl & PCI_EXP_DEVCTL_PAYLOAD) >> 5;
-
- /* If parent payload > device max payload -> error
- * If parent payload > device payload -> set speed
- * If parent payload <= device payload -> do nothing
- */
- if (psz > dmax)
- return -1;
- else if (psz > dsz) {
- dev_info(&dev->dev, "Setting MaxPayload to %d\n", 128 << psz);
- pci_write_config_word(dev, pos + PCI_EXP_DEVCTL,
- (dctl & ~PCI_EXP_DEVCTL_PAYLOAD) +
- (psz << 5));
- }
- return 0;
-}
-
void pci_configure_slot(struct pci_dev *dev)
{
struct pci_dev *cdev;
@@ -210,9 +169,7 @@
(dev->class >> 8) == PCI_CLASS_BRIDGE_PCI)))
return;
- ret = pci_set_payload(dev);
- if (ret)
- dev_warn(&dev->dev, "could not set device max payload\n");
+ pcie_bus_configure_settings(dev->bus, dev->bus->self->pcie_mpss);
memset(&hpp, 0, sizeof(hpp));
ret = pci_get_hp_params(dev, &hpp);
diff --git a/drivers/pci/of.c b/drivers/pci/of.c
index c94d37e..f092993 100644
--- a/drivers/pci/of.c
+++ b/drivers/pci/of.c
@@ -55,7 +55,7 @@
*/
if (bus->bridge->of_node)
return of_node_get(bus->bridge->of_node);
- if (bus->bridge->parent->of_node)
+ if (bus->bridge->parent && bus->bridge->parent->of_node)
return of_node_get(bus->bridge->parent->of_node);
return NULL;
}
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 08a95b3..0ce6742 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -77,6 +77,8 @@
unsigned long pci_hotplug_io_size = DEFAULT_HOTPLUG_IO_SIZE;
unsigned long pci_hotplug_mem_size = DEFAULT_HOTPLUG_MEM_SIZE;
+enum pcie_bus_config_types pcie_bus_config = PCIE_BUS_PERFORMANCE;
+
/*
* The default CLS is used if arch didn't set CLS explicitly and not
* all pci devices agree on the same value. Arch can override either
@@ -3223,6 +3225,67 @@
EXPORT_SYMBOL(pcie_set_readrq);
/**
+ * pcie_get_mps - get PCI Express maximum payload size
+ * @dev: PCI device to query
+ *
+ * Returns maximum payload size in bytes
+ * or appropriate error value.
+ */
+int pcie_get_mps(struct pci_dev *dev)
+{
+ int ret, cap;
+ u16 ctl;
+
+ cap = pci_pcie_cap(dev);
+ if (!cap)
+ return -EINVAL;
+
+ ret = pci_read_config_word(dev, cap + PCI_EXP_DEVCTL, &ctl);
+ if (!ret)
+ ret = 128 << ((ctl & PCI_EXP_DEVCTL_PAYLOAD) >> 5);
+
+ return ret;
+}
+
+/**
+ * pcie_set_mps - set PCI Express maximum payload size
+ * @dev: PCI device to query
+ * @mps: maximum payload size in bytes
+ * valid values are 128, 256, 512, 1024, 2048, 4096
+ *
+ * If possible sets maximum payload size
+ */
+int pcie_set_mps(struct pci_dev *dev, int mps)
+{
+ int cap, err = -EINVAL;
+ u16 ctl, v;
+
+ if (mps < 128 || mps > 4096 || !is_power_of_2(mps))
+ goto out;
+
+ v = ffs(mps) - 8;
+ if (v > dev->pcie_mpss)
+ goto out;
+ v <<= 5;
+
+ cap = pci_pcie_cap(dev);
+ if (!cap)
+ goto out;
+
+ err = pci_read_config_word(dev, cap + PCI_EXP_DEVCTL, &ctl);
+ if (err)
+ goto out;
+
+ if ((ctl & PCI_EXP_DEVCTL_PAYLOAD) != v) {
+ ctl &= ~PCI_EXP_DEVCTL_PAYLOAD;
+ ctl |= v;
+ err = pci_write_config_word(dev, cap + PCI_EXP_DEVCTL, ctl);
+ }
+out:
+ return err;
+}
+
+/**
* pci_select_bars - Make BAR mask from the type of resource
* @dev: the PCI device for which BAR mask is made
* @flags: resource type mask to be selected
@@ -3505,6 +3568,10 @@
pci_hotplug_io_size = memparse(str + 9, &str);
} else if (!strncmp(str, "hpmemsize=", 10)) {
pci_hotplug_mem_size = memparse(str + 10, &str);
+ } else if (!strncmp(str, "pcie_bus_safe", 13)) {
+ pcie_bus_config = PCIE_BUS_SAFE;
+ } else if (!strncmp(str, "pcie_bus_perf", 13)) {
+ pcie_bus_config = PCIE_BUS_PERFORMANCE;
} else {
printk(KERN_ERR "PCI: Unknown option `%s'\n",
str);
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index c8cee76..b74084e 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -283,6 +283,8 @@
#endif /* CONFIG_PCI_IOV */
+extern unsigned long pci_cardbus_resource_alignment(struct resource *);
+
static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
struct resource *res)
{
@@ -292,6 +294,8 @@
if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
return pci_sriov_resource_alignment(dev, resno);
#endif
+ if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS)
+ return pci_cardbus_resource_alignment(res);
return resource_alignment(res);
}
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 795c902..8473727 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -856,6 +856,8 @@
pdev->pcie_cap = pos;
pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, ®16);
pdev->pcie_type = (reg16 & PCI_EXP_FLAGS_TYPE) >> 4;
+ pci_read_config_word(pdev, pos + PCI_EXP_DEVCAP, ®16);
+ pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD;
}
void set_pcie_hotplug_bridge(struct pci_dev *pdev)
@@ -1326,6 +1328,150 @@
return nr;
}
+static int pcie_find_smpss(struct pci_dev *dev, void *data)
+{
+ u8 *smpss = data;
+
+ if (!pci_is_pcie(dev))
+ return 0;
+
+ /* For PCIE hotplug enabled slots not connected directly to a
+ * PCI-E root port, there can be problems when hotplugging
+ * devices. This is due to the possibility of hotplugging a
+ * device into the fabric with a smaller MPS that the devices
+ * currently running have configured. Modifying the MPS on the
+ * running devices could cause a fatal bus error due to an
+ * incoming frame being larger than the newly configured MPS.
+ * To work around this, the MPS for the entire fabric must be
+ * set to the minimum size. Any devices hotplugged into this
+ * fabric will have the minimum MPS set. If the PCI hotplug
+ * slot is directly connected to the root port and there are not
+ * other devices on the fabric (which seems to be the most
+ * common case), then this is not an issue and MPS discovery
+ * will occur as normal.
+ */
+ if (dev->is_hotplug_bridge && (!list_is_singular(&dev->bus->devices) ||
+ dev->bus->self->pcie_type != PCI_EXP_TYPE_ROOT_PORT))
+ *smpss = 0;
+
+ if (*smpss > dev->pcie_mpss)
+ *smpss = dev->pcie_mpss;
+
+ return 0;
+}
+
+static void pcie_write_mps(struct pci_dev *dev, int mps)
+{
+ int rc, dev_mpss;
+
+ dev_mpss = 128 << dev->pcie_mpss;
+
+ if (pcie_bus_config == PCIE_BUS_PERFORMANCE) {
+ if (dev->bus->self) {
+ dev_dbg(&dev->bus->dev, "Bus MPSS %d\n",
+ 128 << dev->bus->self->pcie_mpss);
+
+ /* For "MPS Force Max", the assumption is made that
+ * downstream communication will never be larger than
+ * the MRRS. So, the MPS only needs to be configured
+ * for the upstream communication. This being the case,
+ * walk from the top down and set the MPS of the child
+ * to that of the parent bus.
+ */
+ mps = 128 << dev->bus->self->pcie_mpss;
+ if (mps > dev_mpss)
+ dev_warn(&dev->dev, "MPS configured higher than"
+ " maximum supported by the device. If"
+ " a bus issue occurs, try running with"
+ " pci=pcie_bus_safe.\n");
+ }
+
+ dev->pcie_mpss = ffs(mps) - 8;
+ }
+
+ rc = pcie_set_mps(dev, mps);
+ if (rc)
+ dev_err(&dev->dev, "Failed attempting to set the MPS\n");
+}
+
+static void pcie_write_mrrs(struct pci_dev *dev, int mps)
+{
+ int rc, mrrs;
+
+ if (pcie_bus_config == PCIE_BUS_PERFORMANCE) {
+ int dev_mpss = 128 << dev->pcie_mpss;
+
+ /* For Max performance, the MRRS must be set to the largest
+ * supported value. However, it cannot be configured larger
+ * than the MPS the device or the bus can support. This assumes
+ * that the largest MRRS available on the device cannot be
+ * smaller than the device MPSS.
+ */
+ mrrs = mps < dev_mpss ? mps : dev_mpss;
+ } else
+ /* In the "safe" case, configure the MRRS for fairness on the
+ * bus by making all devices have the same size
+ */
+ mrrs = mps;
+
+
+ /* MRRS is a R/W register. Invalid values can be written, but a
+ * subsiquent read will verify if the value is acceptable or not.
+ * If the MRRS value provided is not acceptable (e.g., too large),
+ * shrink the value until it is acceptable to the HW.
+ */
+ while (mrrs != pcie_get_readrq(dev) && mrrs >= 128) {
+ rc = pcie_set_readrq(dev, mrrs);
+ if (rc)
+ dev_err(&dev->dev, "Failed attempting to set the MRRS\n");
+
+ mrrs /= 2;
+ }
+}
+
+static int pcie_bus_configure_set(struct pci_dev *dev, void *data)
+{
+ int mps = 128 << *(u8 *)data;
+
+ if (!pci_is_pcie(dev))
+ return 0;
+
+ dev_info(&dev->dev, "Dev MPS %d MPSS %d MRRS %d\n",
+ pcie_get_mps(dev), 128<<dev->pcie_mpss, pcie_get_readrq(dev));
+
+ pcie_write_mps(dev, mps);
+ pcie_write_mrrs(dev, mps);
+
+ dev_info(&dev->dev, "Dev MPS %d MPSS %d MRRS %d\n",
+ pcie_get_mps(dev), 128<<dev->pcie_mpss, pcie_get_readrq(dev));
+
+ return 0;
+}
+
+/* pcie_bus_configure_mps requires that pci_walk_bus work in a top-down,
+ * parents then children fashion. If this changes, then this code will not
+ * work as designed.
+ */
+void pcie_bus_configure_settings(struct pci_bus *bus, u8 mpss)
+{
+ u8 smpss = mpss;
+
+ if (!bus->self)
+ return;
+
+ if (!pci_is_pcie(bus->self))
+ return;
+
+ if (pcie_bus_config == PCIE_BUS_SAFE) {
+ pcie_find_smpss(bus->self, &smpss);
+ pci_walk_bus(bus, pcie_find_smpss, &smpss);
+ }
+
+ pcie_bus_configure_set(bus->self, &smpss);
+ pci_walk_bus(bus, pcie_bus_configure_set, &smpss);
+}
+EXPORT_SYMBOL_GPL(pcie_bus_configure_settings);
+
unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus)
{
unsigned int devfn, pass, max = bus->secondary;
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 8a1d3c7..784da9d 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -34,6 +34,7 @@
resource_size_t start;
resource_size_t end;
resource_size_t add_size;
+ resource_size_t min_align;
unsigned long flags;
};
@@ -65,7 +66,7 @@
*/
static void add_to_list(struct resource_list_x *head,
struct pci_dev *dev, struct resource *res,
- resource_size_t add_size)
+ resource_size_t add_size, resource_size_t min_align)
{
struct resource_list_x *list = head;
struct resource_list_x *ln = list->next;
@@ -84,13 +85,16 @@
tmp->end = res->end;
tmp->flags = res->flags;
tmp->add_size = add_size;
+ tmp->min_align = min_align;
list->next = tmp;
}
static void add_to_failed_list(struct resource_list_x *head,
struct pci_dev *dev, struct resource *res)
{
- add_to_list(head, dev, res, 0);
+ add_to_list(head, dev, res,
+ 0 /* dont care */,
+ 0 /* dont care */);
}
static void __dev_sort_resources(struct pci_dev *dev,
@@ -121,18 +125,18 @@
}
/**
- * adjust_resources_sorted() - satisfy any additional resource requests
+ * reassign_resources_sorted() - satisfy any additional resource requests
*
- * @add_head : head of the list tracking requests requiring additional
+ * @realloc_head : head of the list tracking requests requiring additional
* resources
* @head : head of the list tracking requests with allocated
* resources
*
- * Walk through each element of the add_head and try to procure
+ * Walk through each element of the realloc_head and try to procure
* additional resources for the element, provided the element
* is in the head list.
*/
-static void adjust_resources_sorted(struct resource_list_x *add_head,
+static void reassign_resources_sorted(struct resource_list_x *realloc_head,
struct resource_list *head)
{
struct resource *res;
@@ -141,8 +145,8 @@
resource_size_t add_size;
int idx;
- prev = add_head;
- for (list = add_head->next; list;) {
+ prev = realloc_head;
+ for (list = realloc_head->next; list;) {
res = list->res;
/* skip resource that has been reset */
if (!res->flags)
@@ -159,13 +163,17 @@
idx = res - &list->dev->resource[0];
add_size=list->add_size;
- if (!resource_size(res) && add_size) {
- res->end = res->start + add_size - 1;
- if(pci_assign_resource(list->dev, idx))
+ if (!resource_size(res)) {
+ res->start = list->start;
+ res->end = res->start + add_size - 1;
+ if(pci_assign_resource(list->dev, idx))
reset_resource(res);
- } else if (add_size) {
- adjust_resource(res, res->start,
- resource_size(res) + add_size);
+ } else {
+ resource_size_t align = list->min_align;
+ res->flags |= list->flags & (IORESOURCE_STARTALIGN|IORESOURCE_SIZEALIGN);
+ if (pci_reassign_resource(list->dev, idx, add_size, align))
+ dev_printk(KERN_DEBUG, &list->dev->dev, "failed to add optional resources res=%pR\n",
+ res);
}
out:
tmp = list;
@@ -210,16 +218,16 @@
}
static void __assign_resources_sorted(struct resource_list *head,
- struct resource_list_x *add_head,
+ struct resource_list_x *realloc_head,
struct resource_list_x *fail_head)
{
/* Satisfy the must-have resource requests */
assign_requested_resources_sorted(head, fail_head);
- /* Try to satisfy any additional nice-to-have resource
+ /* Try to satisfy any additional optional resource
requests */
- if (add_head)
- adjust_resources_sorted(add_head, head);
+ if (realloc_head)
+ reassign_resources_sorted(realloc_head, head);
free_list(resource_list, head);
}
@@ -235,7 +243,7 @@
}
static void pbus_assign_resources_sorted(const struct pci_bus *bus,
- struct resource_list_x *add_head,
+ struct resource_list_x *realloc_head,
struct resource_list_x *fail_head)
{
struct pci_dev *dev;
@@ -245,7 +253,7 @@
list_for_each_entry(dev, &bus->devices, bus_list)
__dev_sort_resources(dev, &head);
- __assign_resources_sorted(&head, add_head, fail_head);
+ __assign_resources_sorted(&head, realloc_head, fail_head);
}
void pci_setup_cardbus(struct pci_bus *bus)
@@ -540,13 +548,27 @@
return size;
}
+static resource_size_t get_res_add_size(struct resource_list_x *realloc_head,
+ struct resource *res)
+{
+ struct resource_list_x *list;
+
+ /* check if it is in realloc_head list */
+ for (list = realloc_head->next; list && list->res != res;
+ list = list->next);
+ if (list)
+ return list->add_size;
+
+ return 0;
+}
+
/**
* pbus_size_io() - size the io window of a given bus
*
* @bus : the bus
* @min_size : the minimum io window that must to be allocated
* @add_size : additional optional io window
- * @add_head : track the additional io window on this list
+ * @realloc_head : track the additional io window on this list
*
* Sizing the IO windows of the PCI-PCI bridge is trivial,
* since these windows have 4K granularity and the IO ranges
@@ -554,11 +576,12 @@
* We must be careful with the ISA aliasing though.
*/
static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
- resource_size_t add_size, struct resource_list_x *add_head)
+ resource_size_t add_size, struct resource_list_x *realloc_head)
{
struct pci_dev *dev;
struct resource *b_res = find_free_bus_resource(bus, IORESOURCE_IO);
unsigned long size = 0, size0 = 0, size1 = 0;
+ resource_size_t children_add_size = 0;
if (!b_res)
return;
@@ -579,11 +602,16 @@
size += r_size;
else
size1 += r_size;
+
+ if (realloc_head)
+ children_add_size += get_res_add_size(realloc_head, r);
}
}
size0 = calculate_iosize(size, min_size, size1,
resource_size(b_res), 4096);
- size1 = (!add_head || (add_head && !add_size)) ? size0 :
+ if (children_add_size > add_size)
+ add_size = children_add_size;
+ size1 = (!realloc_head || (realloc_head && !add_size)) ? size0 :
calculate_iosize(size, min_size+add_size, size1,
resource_size(b_res), 4096);
if (!size0 && !size1) {
@@ -598,8 +626,8 @@
b_res->start = 4096;
b_res->end = b_res->start + size0 - 1;
b_res->flags |= IORESOURCE_STARTALIGN;
- if (size1 > size0 && add_head)
- add_to_list(add_head, bus->self, b_res, size1-size0);
+ if (size1 > size0 && realloc_head)
+ add_to_list(realloc_head, bus->self, b_res, size1-size0, 4096);
}
/**
@@ -608,7 +636,7 @@
* @bus : the bus
* @min_size : the minimum memory window that must to be allocated
* @add_size : additional optional memory window
- * @add_head : track the additional memory window on this list
+ * @realloc_head : track the additional memory window on this list
*
* Calculate the size of the bus and minimal alignment which
* guarantees that all child resources fit in this size.
@@ -616,7 +644,7 @@
static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
unsigned long type, resource_size_t min_size,
resource_size_t add_size,
- struct resource_list_x *add_head)
+ struct resource_list_x *realloc_head)
{
struct pci_dev *dev;
resource_size_t min_align, align, size, size0, size1;
@@ -624,6 +652,7 @@
int order, max_order;
struct resource *b_res = find_free_bus_resource(bus, type);
unsigned int mem64_mask = 0;
+ resource_size_t children_add_size = 0;
if (!b_res)
return 0;
@@ -645,6 +674,16 @@
if (r->parent || (r->flags & mask) != type)
continue;
r_size = resource_size(r);
+#ifdef CONFIG_PCI_IOV
+ /* put SRIOV requested res to the optional list */
+ if (realloc_head && i >= PCI_IOV_RESOURCES &&
+ i <= PCI_IOV_RESOURCE_END) {
+ r->end = r->start - 1;
+ add_to_list(realloc_head, dev, r, r_size, 0/* dont' care */);
+ children_add_size += r_size;
+ continue;
+ }
+#endif
/* For bridges size != alignment */
align = pci_resource_alignment(dev, r);
order = __ffs(align) - 20;
@@ -665,6 +704,9 @@
if (order > max_order)
max_order = order;
mem64_mask &= r->flags & IORESOURCE_MEM_64;
+
+ if (realloc_head)
+ children_add_size += get_res_add_size(realloc_head, r);
}
}
align = 0;
@@ -681,7 +723,9 @@
align += aligns[order];
}
size0 = calculate_memsize(size, min_size, 0, resource_size(b_res), min_align);
- size1 = (!add_head || (add_head && !add_size)) ? size0 :
+ if (children_add_size > add_size)
+ add_size = children_add_size;
+ size1 = (!realloc_head || (realloc_head && !add_size)) ? size0 :
calculate_memsize(size, min_size+add_size, 0,
resource_size(b_res), min_align);
if (!size0 && !size1) {
@@ -695,12 +739,22 @@
b_res->start = min_align;
b_res->end = size0 + min_align - 1;
b_res->flags |= IORESOURCE_STARTALIGN | mem64_mask;
- if (size1 > size0 && add_head)
- add_to_list(add_head, bus->self, b_res, size1-size0);
+ if (size1 > size0 && realloc_head)
+ add_to_list(realloc_head, bus->self, b_res, size1-size0, min_align);
return 1;
}
-static void pci_bus_size_cardbus(struct pci_bus *bus)
+unsigned long pci_cardbus_resource_alignment(struct resource *res)
+{
+ if (res->flags & IORESOURCE_IO)
+ return pci_cardbus_io_size;
+ if (res->flags & IORESOURCE_MEM)
+ return pci_cardbus_mem_size;
+ return 0;
+}
+
+static void pci_bus_size_cardbus(struct pci_bus *bus,
+ struct resource_list_x *realloc_head)
{
struct pci_dev *bridge = bus->self;
struct resource *b_res = &bridge->resource[PCI_BRIDGE_RESOURCES];
@@ -711,12 +765,14 @@
* a fixed amount of bus space for CardBus bridges.
*/
b_res[0].start = 0;
- b_res[0].end = pci_cardbus_io_size - 1;
b_res[0].flags |= IORESOURCE_IO | IORESOURCE_SIZEALIGN;
+ if (realloc_head)
+ add_to_list(realloc_head, bridge, b_res, pci_cardbus_io_size, 0 /* dont care */);
b_res[1].start = 0;
- b_res[1].end = pci_cardbus_io_size - 1;
b_res[1].flags |= IORESOURCE_IO | IORESOURCE_SIZEALIGN;
+ if (realloc_head)
+ add_to_list(realloc_head, bridge, b_res+1, pci_cardbus_io_size, 0 /* dont care */);
/*
* Check whether prefetchable memory is supported
@@ -736,21 +792,31 @@
*/
if (ctrl & PCI_CB_BRIDGE_CTL_PREFETCH_MEM0) {
b_res[2].start = 0;
- b_res[2].end = pci_cardbus_mem_size - 1;
b_res[2].flags |= IORESOURCE_MEM | IORESOURCE_PREFETCH | IORESOURCE_SIZEALIGN;
+ if (realloc_head)
+ add_to_list(realloc_head, bridge, b_res+2, pci_cardbus_mem_size, 0 /* dont care */);
b_res[3].start = 0;
- b_res[3].end = pci_cardbus_mem_size - 1;
b_res[3].flags |= IORESOURCE_MEM | IORESOURCE_SIZEALIGN;
+ if (realloc_head)
+ add_to_list(realloc_head, bridge, b_res+3, pci_cardbus_mem_size, 0 /* dont care */);
} else {
b_res[3].start = 0;
- b_res[3].end = pci_cardbus_mem_size * 2 - 1;
b_res[3].flags |= IORESOURCE_MEM | IORESOURCE_SIZEALIGN;
+ if (realloc_head)
+ add_to_list(realloc_head, bridge, b_res+3, pci_cardbus_mem_size * 2, 0 /* dont care */);
}
+
+ /* set the size of the resource to zero, so that the resource does not
+ * get assigned during required-resource allocation cycle but gets assigned
+ * during the optional-resource allocation cycle.
+ */
+ b_res[0].start = b_res[1].start = b_res[2].start = b_res[3].start = 1;
+ b_res[0].end = b_res[1].end = b_res[2].end = b_res[3].end = 0;
}
void __ref __pci_bus_size_bridges(struct pci_bus *bus,
- struct resource_list_x *add_head)
+ struct resource_list_x *realloc_head)
{
struct pci_dev *dev;
unsigned long mask, prefmask;
@@ -763,12 +829,12 @@
switch (dev->class >> 8) {
case PCI_CLASS_BRIDGE_CARDBUS:
- pci_bus_size_cardbus(b);
+ pci_bus_size_cardbus(b, realloc_head);
break;
case PCI_CLASS_BRIDGE_PCI:
default:
- __pci_bus_size_bridges(b, add_head);
+ __pci_bus_size_bridges(b, realloc_head);
break;
}
}
@@ -792,7 +858,7 @@
* Follow thru
*/
default:
- pbus_size_io(bus, 0, additional_io_size, add_head);
+ pbus_size_io(bus, 0, additional_io_size, realloc_head);
/* If the bridge supports prefetchable range, size it
separately. If it doesn't, or its prefetchable window
has already been allocated by arch code, try
@@ -800,11 +866,11 @@
resources. */
mask = IORESOURCE_MEM;
prefmask = IORESOURCE_MEM | IORESOURCE_PREFETCH;
- if (pbus_size_mem(bus, prefmask, prefmask, 0, additional_mem_size, add_head))
+ if (pbus_size_mem(bus, prefmask, prefmask, 0, additional_mem_size, realloc_head))
mask = prefmask; /* Success, size non-prefetch only. */
else
additional_mem_size += additional_mem_size;
- pbus_size_mem(bus, mask, IORESOURCE_MEM, 0, additional_mem_size, add_head);
+ pbus_size_mem(bus, mask, IORESOURCE_MEM, 0, additional_mem_size, realloc_head);
break;
}
}
@@ -816,20 +882,20 @@
EXPORT_SYMBOL(pci_bus_size_bridges);
static void __ref __pci_bus_assign_resources(const struct pci_bus *bus,
- struct resource_list_x *add_head,
+ struct resource_list_x *realloc_head,
struct resource_list_x *fail_head)
{
struct pci_bus *b;
struct pci_dev *dev;
- pbus_assign_resources_sorted(bus, add_head, fail_head);
+ pbus_assign_resources_sorted(bus, realloc_head, fail_head);
list_for_each_entry(dev, &bus->devices, bus_list) {
b = dev->subordinate;
if (!b)
continue;
- __pci_bus_assign_resources(b, add_head, fail_head);
+ __pci_bus_assign_resources(b, realloc_head, fail_head);
switch (dev->class >> 8) {
case PCI_CLASS_BRIDGE_PCI:
@@ -1039,7 +1105,7 @@
pci_assign_unassigned_resources(void)
{
struct pci_bus *bus;
- struct resource_list_x add_list; /* list of resources that
+ struct resource_list_x realloc_list; /* list of resources that
want additional resources */
int tried_times = 0;
enum release_type rel_type = leaf_only;
@@ -1052,7 +1118,7 @@
head.next = NULL;
- add_list.next = NULL;
+ realloc_list.next = NULL;
pci_try_num = max_depth + 1;
printk(KERN_DEBUG "PCI: max bus depth: %d pci_try_num: %d\n",
@@ -1062,12 +1128,12 @@
/* Depth first, calculate sizes and alignments of all
subordinate buses. */
list_for_each_entry(bus, &pci_root_buses, node)
- __pci_bus_size_bridges(bus, &add_list);
+ __pci_bus_size_bridges(bus, &realloc_list);
/* Depth last, allocate resources and update the hardware. */
list_for_each_entry(bus, &pci_root_buses, node)
- __pci_bus_assign_resources(bus, &add_list, &head);
- BUG_ON(add_list.next);
+ __pci_bus_assign_resources(bus, &realloc_list, &head);
+ BUG_ON(realloc_list.next);
tried_times++;
/* any device complain? */
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index 319f359..51a9095 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -128,16 +128,16 @@
}
#endif /* CONFIG_PCI_QUIRKS */
+
+
static int __pci_assign_resource(struct pci_bus *bus, struct pci_dev *dev,
- int resno)
+ int resno, resource_size_t size, resource_size_t align)
{
struct resource *res = dev->resource + resno;
- resource_size_t size, min, align;
+ resource_size_t min;
int ret;
- size = resource_size(res);
min = (res->flags & IORESOURCE_IO) ? PCIBIOS_MIN_IO : PCIBIOS_MIN_MEM;
- align = pci_resource_alignment(dev, res);
/* First, try exact prefetching match.. */
ret = pci_bus_alloc_resource(bus, res, size, align, min,
@@ -154,73 +154,51 @@
ret = pci_bus_alloc_resource(bus, res, size, align, min, 0,
pcibios_align_resource, dev);
}
-
- if (ret < 0 && dev->fw_addr[resno]) {
- struct resource *root, *conflict;
- resource_size_t start, end;
-
- /*
- * If we failed to assign anything, let's try the address
- * where firmware left it. That at least has a chance of
- * working, which is better than just leaving it disabled.
- */
-
- if (res->flags & IORESOURCE_IO)
- root = &ioport_resource;
- else
- root = &iomem_resource;
-
- start = res->start;
- end = res->end;
- res->start = dev->fw_addr[resno];
- res->end = res->start + size - 1;
- dev_info(&dev->dev, "BAR %d: trying firmware assignment %pR\n",
- resno, res);
- conflict = request_resource_conflict(root, res);
- if (conflict) {
- dev_info(&dev->dev,
- "BAR %d: %pR conflicts with %s %pR\n", resno,
- res, conflict->name, conflict);
- res->start = start;
- res->end = end;
- } else
- ret = 0;
- }
-
- if (!ret) {
- res->flags &= ~IORESOURCE_STARTALIGN;
- dev_info(&dev->dev, "BAR %d: assigned %pR\n", resno, res);
- if (resno < PCI_BRIDGE_RESOURCES)
- pci_update_resource(dev, resno);
- }
-
return ret;
}
-int pci_assign_resource(struct pci_dev *dev, int resno)
+static int pci_revert_fw_address(struct resource *res, struct pci_dev *dev,
+ int resno, resource_size_t size)
+{
+ struct resource *root, *conflict;
+ resource_size_t start, end;
+ int ret = 0;
+
+ if (res->flags & IORESOURCE_IO)
+ root = &ioport_resource;
+ else
+ root = &iomem_resource;
+
+ start = res->start;
+ end = res->end;
+ res->start = dev->fw_addr[resno];
+ res->end = res->start + size - 1;
+ dev_info(&dev->dev, "BAR %d: trying firmware assignment %pR\n",
+ resno, res);
+ conflict = request_resource_conflict(root, res);
+ if (conflict) {
+ dev_info(&dev->dev,
+ "BAR %d: %pR conflicts with %s %pR\n", resno,
+ res, conflict->name, conflict);
+ res->start = start;
+ res->end = end;
+ ret = 1;
+ }
+ return ret;
+}
+
+static int _pci_assign_resource(struct pci_dev *dev, int resno, int size, resource_size_t min_align)
{
struct resource *res = dev->resource + resno;
- resource_size_t align;
struct pci_bus *bus;
int ret;
char *type;
- align = pci_resource_alignment(dev, res);
- if (!align) {
- dev_info(&dev->dev, "BAR %d: can't assign %pR "
- "(bogus alignment)\n", resno, res);
- return -EINVAL;
- }
-
bus = dev->bus;
- while ((ret = __pci_assign_resource(bus, dev, resno))) {
- if (bus->parent && bus->self->transparent)
- bus = bus->parent;
- else
- bus = NULL;
- if (bus)
- continue;
- break;
+ while ((ret = __pci_assign_resource(bus, dev, resno, size, min_align))) {
+ if (!bus->parent || !bus->self->transparent)
+ break;
+ bus = bus->parent;
}
if (ret) {
@@ -241,6 +219,66 @@
return ret;
}
+int pci_reassign_resource(struct pci_dev *dev, int resno, resource_size_t addsize,
+ resource_size_t min_align)
+{
+ struct resource *res = dev->resource + resno;
+ resource_size_t new_size;
+ int ret;
+
+ if (!res->parent) {
+ dev_info(&dev->dev, "BAR %d: can't reassign an unassigned resouce %pR "
+ "\n", resno, res);
+ return -EINVAL;
+ }
+
+ new_size = resource_size(res) + addsize + min_align;
+ ret = _pci_assign_resource(dev, resno, new_size, min_align);
+ if (!ret) {
+ res->flags &= ~IORESOURCE_STARTALIGN;
+ dev_info(&dev->dev, "BAR %d: assigned %pR\n", resno, res);
+ if (resno < PCI_BRIDGE_RESOURCES)
+ pci_update_resource(dev, resno);
+ }
+ return ret;
+}
+
+int pci_assign_resource(struct pci_dev *dev, int resno)
+{
+ struct resource *res = dev->resource + resno;
+ resource_size_t align, size;
+ struct pci_bus *bus;
+ int ret;
+
+ align = pci_resource_alignment(dev, res);
+ if (!align) {
+ dev_info(&dev->dev, "BAR %d: can't assign %pR "
+ "(bogus alignment)\n", resno, res);
+ return -EINVAL;
+ }
+
+ bus = dev->bus;
+ size = resource_size(res);
+ ret = _pci_assign_resource(dev, resno, size, align);
+
+ /*
+ * If we failed to assign anything, let's try the address
+ * where firmware left it. That at least has a chance of
+ * working, which is better than just leaving it disabled.
+ */
+ if (ret < 0 && dev->fw_addr[resno])
+ ret = pci_revert_fw_address(res, dev, resno, size);
+
+ if (!ret) {
+ res->flags &= ~IORESOURCE_STARTALIGN;
+ dev_info(&dev->dev, "BAR %d: assigned %pR\n", resno, res);
+ if (resno < PCI_BRIDGE_RESOURCES)
+ pci_update_resource(dev, resno);
+ }
+ return ret;
+}
+
+
/* Sort resources by alignment */
void pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
{
diff --git a/drivers/power/max8997_charger.c b/drivers/power/max8997_charger.c
index 7106b49..ffc5033 100644
--- a/drivers/power/max8997_charger.c
+++ b/drivers/power/max8997_charger.c
@@ -20,6 +20,7 @@
*/
#include <linux/err.h>
+#include <linux/module.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
diff --git a/drivers/power/max8998_charger.c b/drivers/power/max8998_charger.c
index cc21fa2..ef8efad 100644
--- a/drivers/power/max8998_charger.c
+++ b/drivers/power/max8998_charger.c
@@ -20,6 +20,7 @@
*/
#include <linux/err.h>
+#include <linux/module.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
diff --git a/drivers/power/s3c_adc_battery.c b/drivers/power/s3c_adc_battery.c
index a675e31..d32d0d7 100644
--- a/drivers/power/s3c_adc_battery.c
+++ b/drivers/power/s3c_adc_battery.c
@@ -20,6 +20,7 @@
#include <linux/s3c_adc_battery.h>
#include <linux/errno.h>
#include <linux/init.h>
+#include <linux/module.h>
#include <plat/adc.h>
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 3195dbd..44e91e5 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -639,7 +639,7 @@
static int rtc_update_hrtimer(struct rtc_device *rtc, int enabled)
{
/*
- * We unconditionally cancel the timer here, because otherwise
+ * We always cancel the timer here first, because otherwise
* we could run into BUG_ON(timer->state != HRTIMER_STATE_CALLBACK);
* when we manage to start the timer before the callback
* returns HRTIMER_RESTART.
@@ -708,7 +708,7 @@
int err = 0;
unsigned long flags;
- if (freq <= 0 || freq > 5000)
+ if (freq <= 0 || freq > RTC_MAX_FREQ)
return -EINVAL;
retry:
spin_lock_irqsave(&rtc->irq_task_lock, flags);
diff --git a/drivers/staging/gma500/mdfld_dsi_dbi.c b/drivers/staging/gma500/mdfld_dsi_dbi.c
index 02e17c9..fd211f3 100644
--- a/drivers/staging/gma500/mdfld_dsi_dbi.c
+++ b/drivers/staging/gma500/mdfld_dsi_dbi.c
@@ -711,10 +711,11 @@
/* Create drm encoder object */
connector = &dsi_connector->base.base;
encoder = &dbi_output->base.base;
+ /* Review this if we ever get MIPI-HDMI bridges or similar */
drm_encoder_init(dev,
encoder,
p_funcs->encoder_funcs,
- DRM_MODE_ENCODER_MIPI);
+ DRM_MODE_ENCODER_LVDS);
drm_encoder_helper_add(encoder, p_funcs->encoder_helper_funcs);
/* Attach to given connector */
diff --git a/drivers/staging/gma500/mdfld_dsi_dbi.h b/drivers/staging/gma500/mdfld_dsi_dbi.h
index dc6242c..f0fa986 100644
--- a/drivers/staging/gma500/mdfld_dsi_dbi.h
+++ b/drivers/staging/gma500/mdfld_dsi_dbi.h
@@ -42,9 +42,6 @@
#include "mdfld_dsi_output.h"
#include "mdfld_output.h"
-#define DRM_MODE_ENCODER_MIPI 5
-
-
/*
* DBI encoder which inherits from mdfld_dsi_encoder
*/
diff --git a/drivers/staging/gma500/mdfld_dsi_dpi.c b/drivers/staging/gma500/mdfld_dsi_dpi.c
index 6e03a91..e685f12 100644
--- a/drivers/staging/gma500/mdfld_dsi_dpi.c
+++ b/drivers/staging/gma500/mdfld_dsi_dpi.c
@@ -777,10 +777,15 @@
/* Create drm encoder object */
connector = &dsi_connector->base.base;
encoder = &dpi_output->base.base;
+ /*
+ * On existing hardware this will be a panel of some form,
+ * if future devices also have HDMI bridges this will need
+ * revisiting
+ */
drm_encoder_init(dev,
encoder,
p_funcs->encoder_funcs,
- DRM_MODE_ENCODER_MIPI);
+ DRM_MODE_ENCODER_LVDS);
drm_encoder_helper_add(encoder,
p_funcs->encoder_helper_funcs);
diff --git a/drivers/staging/gma500/mdfld_dsi_output.c b/drivers/staging/gma500/mdfld_dsi_output.c
index 7536095..9050c0f 100644
--- a/drivers/staging/gma500/mdfld_dsi_output.c
+++ b/drivers/staging/gma500/mdfld_dsi_output.c
@@ -955,7 +955,9 @@
psb_output->type = (pipe == 0) ? INTEL_OUTPUT_MIPI : INTEL_OUTPUT_MIPI2;
connector = &psb_output->base;
- drm_connector_init(dev, connector, &mdfld_dsi_connector_funcs, DRM_MODE_CONNECTOR_MIPI);
+ /* Revisit type if MIPI/HDMI bridges ever appear on Medfield */
+ drm_connector_init(dev, connector, &mdfld_dsi_connector_funcs,
+ DRM_MODE_CONNECTOR_LVDS);
drm_connector_helper_add(connector, &mdfld_dsi_connector_helper_funcs);
connector->display_info.subpixel_order = SubPixelHorizontalRGB;
diff --git a/drivers/staging/gma500/medfield.h b/drivers/staging/gma500/medfield.h
index 38165e8..09e9687 100644
--- a/drivers/staging/gma500/medfield.h
+++ b/drivers/staging/gma500/medfield.h
@@ -21,8 +21,6 @@
* DEALINGS IN THE SOFTWARE.
*/
-#define DRM_MODE_ENCODER_MIPI 5
-
/* Medfield DSI controller registers */
#define MIPIA_DEVICE_READY_REG 0xb000
diff --git a/drivers/staging/gma500/psb_drv.h b/drivers/staging/gma500/psb_drv.h
index 72f487a..fd4732d 100644
--- a/drivers/staging/gma500/psb_drv.h
+++ b/drivers/staging/gma500/psb_drv.h
@@ -35,7 +35,6 @@
/* Append new drm mode definition here, align with libdrm definition */
#define DRM_MODE_SCALE_NO_SCALE 2
-#define DRM_MODE_CONNECTOR_MIPI 15
enum {
CHIP_PSB_8108 = 0, /* Poulsbo */
diff --git a/drivers/xen/xen-selfballoon.c b/drivers/xen/xen-selfballoon.c
index 1b4afd8..6ea852e 100644
--- a/drivers/xen/xen-selfballoon.c
+++ b/drivers/xen/xen-selfballoon.c
@@ -70,6 +70,7 @@
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/mman.h>
+#include <linux/module.h>
#include <linux/workqueue.h>
#include <xen/balloon.h>
#include <xen/tmem.h>
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index 54b8c28..720d885 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -474,17 +474,22 @@
befs_data_stream *data = &befs_ino->i_data.ds;
befs_off_t len = data->size;
- befs_debug(sb, "Follow long symlink");
-
- link = kmalloc(len, GFP_NOFS);
- if (!link) {
- link = ERR_PTR(-ENOMEM);
- } else if (befs_read_lsymlink(sb, data, link, len) != len) {
- kfree(link);
- befs_error(sb, "Failed to read entire long symlink");
+ if (len == 0) {
+ befs_error(sb, "Long symlink with illegal length");
link = ERR_PTR(-EIO);
} else {
- link[len - 1] = '\0';
+ befs_debug(sb, "Follow long symlink");
+
+ link = kmalloc(len, GFP_NOFS);
+ if (!link) {
+ link = ERR_PTR(-ENOMEM);
+ } else if (befs_read_lsymlink(sb, data, link, len) != len) {
+ kfree(link);
+ befs_error(sb, "Failed to read entire long symlink");
+ link = ERR_PTR(-EIO);
+ } else {
+ link[len - 1] = '\0';
+ }
}
} else {
link = befs_ino->i_data.symlink;
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 0469263..03912c5 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1415,17 +1415,15 @@
#define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
static inline u##bits btrfs_##name(struct extent_buffer *eb) \
{ \
- type *p = kmap_atomic(eb->first_page, KM_USER0); \
+ type *p = page_address(eb->first_page); \
u##bits res = le##bits##_to_cpu(p->member); \
- kunmap_atomic(p, KM_USER0); \
return res; \
} \
static inline void btrfs_set_##name(struct extent_buffer *eb, \
u##bits val) \
{ \
- type *p = kmap_atomic(eb->first_page, KM_USER0); \
+ type *p = page_address(eb->first_page); \
p->member = cpu_to_le##bits(val); \
- kunmap_atomic(p, KM_USER0); \
}
#define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
@@ -2367,8 +2365,8 @@
int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path);
int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path);
int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf);
-int btrfs_drop_snapshot(struct btrfs_root *root,
- struct btrfs_block_rsv *block_rsv, int update_ref);
+void btrfs_drop_snapshot(struct btrfs_root *root,
+ struct btrfs_block_rsv *block_rsv, int update_ref);
int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct extent_buffer *node,
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 66bac22..f5be06a 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -1782,6 +1782,9 @@
for (i = 0; i < multi->num_stripes; i++, stripe++) {
+ if (!stripe->dev->can_discard)
+ continue;
+
ret = btrfs_issue_discard(stripe->dev->bdev,
stripe->physical,
stripe->length);
@@ -1789,11 +1792,16 @@
discarded_bytes += stripe->length;
else if (ret != -EOPNOTSUPP)
break;
+
+ /*
+ * Just in case we get back EOPNOTSUPP for some reason,
+ * just ignore the return value so we don't screw up
+ * people calling discard_extent.
+ */
+ ret = 0;
}
kfree(multi);
}
- if (discarded_bytes && ret == -EOPNOTSUPP)
- ret = 0;
if (actual_bytes)
*actual_bytes = discarded_bytes;
@@ -6269,8 +6277,8 @@
* also make sure backrefs for the shared block and all lower level
* blocks are properly updated.
*/
-int btrfs_drop_snapshot(struct btrfs_root *root,
- struct btrfs_block_rsv *block_rsv, int update_ref)
+void btrfs_drop_snapshot(struct btrfs_root *root,
+ struct btrfs_block_rsv *block_rsv, int update_ref)
{
struct btrfs_path *path;
struct btrfs_trans_handle *trans;
@@ -6283,13 +6291,16 @@
int level;
path = btrfs_alloc_path();
- if (!path)
- return -ENOMEM;
+ if (!path) {
+ err = -ENOMEM;
+ goto out;
+ }
wc = kzalloc(sizeof(*wc), GFP_NOFS);
if (!wc) {
btrfs_free_path(path);
- return -ENOMEM;
+ err = -ENOMEM;
+ goto out;
}
trans = btrfs_start_transaction(tree_root, 0);
@@ -6318,7 +6329,7 @@
path->lowest_level = 0;
if (ret < 0) {
err = ret;
- goto out;
+ goto out_free;
}
WARN_ON(ret > 0);
@@ -6425,11 +6436,14 @@
free_extent_buffer(root->commit_root);
kfree(root);
}
-out:
+out_free:
btrfs_end_transaction_throttle(trans, tree_root);
kfree(wc);
btrfs_free_path(path);
- return err;
+out:
+ if (err)
+ btrfs_std_error(root->fs_info, err);
+ return;
}
/*
@@ -6720,6 +6734,10 @@
struct btrfs_space_info *space_info;
struct btrfs_fs_devices *fs_devices = root->fs_info->fs_devices;
struct btrfs_device *device;
+ u64 min_free;
+ u64 dev_min = 1;
+ u64 dev_nr = 0;
+ int index;
int full = 0;
int ret = 0;
@@ -6729,8 +6747,10 @@
if (!block_group)
return -1;
+ min_free = btrfs_block_group_used(&block_group->item);
+
/* no bytes used, we're good */
- if (!btrfs_block_group_used(&block_group->item))
+ if (!min_free)
goto out;
space_info = block_group->space_info;
@@ -6746,10 +6766,9 @@
* all of the extents from this block group. If we can, we're good
*/
if ((space_info->total_bytes != block_group->key.offset) &&
- (space_info->bytes_used + space_info->bytes_reserved +
- space_info->bytes_pinned + space_info->bytes_readonly +
- btrfs_block_group_used(&block_group->item) <
- space_info->total_bytes)) {
+ (space_info->bytes_used + space_info->bytes_reserved +
+ space_info->bytes_pinned + space_info->bytes_readonly +
+ min_free < space_info->total_bytes)) {
spin_unlock(&space_info->lock);
goto out;
}
@@ -6766,9 +6785,31 @@
if (full)
goto out;
+ /*
+ * index:
+ * 0: raid10
+ * 1: raid1
+ * 2: dup
+ * 3: raid0
+ * 4: single
+ */
+ index = get_block_group_index(block_group);
+ if (index == 0) {
+ dev_min = 4;
+ /* Divide by 2 */
+ min_free >>= 1;
+ } else if (index == 1) {
+ dev_min = 2;
+ } else if (index == 2) {
+ /* Multiply by 2 */
+ min_free <<= 1;
+ } else if (index == 3) {
+ dev_min = fs_devices->rw_devices;
+ do_div(min_free, dev_min);
+ }
+
mutex_lock(&root->fs_info->chunk_mutex);
list_for_each_entry(device, &fs_devices->alloc_list, dev_alloc_list) {
- u64 min_free = btrfs_block_group_used(&block_group->item);
u64 dev_offset;
/*
@@ -6779,7 +6820,11 @@
ret = find_free_dev_extent(NULL, device, min_free,
&dev_offset, NULL);
if (!ret)
+ dev_nr++;
+
+ if (dev_nr >= dev_min)
break;
+
ret = -1;
}
}
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 658d669..e7872e4 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -150,6 +150,8 @@
spin_lock(&root->fs_info->defrag_inodes_lock);
if (!BTRFS_I(inode)->in_defrag)
__btrfs_add_inode_defrag(inode, defrag);
+ else
+ kfree(defrag);
spin_unlock(&root->fs_info->defrag_inodes_lock);
return 0;
}
@@ -1638,11 +1640,15 @@
cur_offset = alloc_start;
while (1) {
+ u64 actual_end;
+
em = btrfs_get_extent(inode, NULL, 0, cur_offset,
alloc_end - cur_offset, 0);
BUG_ON(IS_ERR_OR_NULL(em));
last_byte = min(extent_map_end(em), alloc_end);
+ actual_end = min_t(u64, extent_map_end(em), offset + len);
last_byte = (last_byte + mask) & ~mask;
+
if (em->block_start == EXTENT_MAP_HOLE ||
(cur_offset >= inode->i_size &&
!test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) {
@@ -1655,6 +1661,16 @@
free_extent_map(em);
break;
}
+ } else if (actual_end > inode->i_size &&
+ !(mode & FALLOC_FL_KEEP_SIZE)) {
+ /*
+ * We didn't need to allocate any more space, but we
+ * still extended the size of the file so we need to
+ * update i_size.
+ */
+ inode->i_ctime = CURRENT_TIME;
+ i_size_write(inode, actual_end);
+ btrfs_ordered_update_i_size(inode, actual_end, NULL);
}
free_extent_map(em);
@@ -1804,10 +1820,14 @@
}
}
- if (offset < 0 && !(file->f_mode & FMODE_UNSIGNED_OFFSET))
- return -EINVAL;
- if (offset > inode->i_sb->s_maxbytes)
- return -EINVAL;
+ if (offset < 0 && !(file->f_mode & FMODE_UNSIGNED_OFFSET)) {
+ ret = -EINVAL;
+ goto out;
+ }
+ if (offset > inode->i_sb->s_maxbytes) {
+ ret = -EINVAL;
+ goto out;
+ }
/* Special lock needed here? */
if (offset != file->f_pos) {
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 6377713..6a265b9 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -1168,9 +1168,9 @@
div64_u64(extent_bytes, (sizeof(struct btrfs_free_space)));
}
-static void bitmap_clear_bits(struct btrfs_free_space_ctl *ctl,
- struct btrfs_free_space *info, u64 offset,
- u64 bytes)
+static inline void __bitmap_clear_bits(struct btrfs_free_space_ctl *ctl,
+ struct btrfs_free_space *info,
+ u64 offset, u64 bytes)
{
unsigned long start, count;
@@ -1181,6 +1181,13 @@
bitmap_clear(info->bitmap, start, count);
info->bytes -= bytes;
+}
+
+static void bitmap_clear_bits(struct btrfs_free_space_ctl *ctl,
+ struct btrfs_free_space *info, u64 offset,
+ u64 bytes)
+{
+ __bitmap_clear_bits(ctl, info, offset, bytes);
ctl->free_space -= bytes;
}
@@ -1984,7 +1991,7 @@
return 0;
ret = search_start;
- bitmap_clear_bits(ctl, entry, ret, bytes);
+ __bitmap_clear_bits(ctl, entry, ret, bytes);
return ret;
}
@@ -2039,7 +2046,6 @@
continue;
}
} else {
-
ret = entry->offset;
entry->offset += bytes;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 15fceef..0ccc743 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -7354,11 +7354,15 @@
static int btrfs_permission(struct inode *inode, int mask)
{
struct btrfs_root *root = BTRFS_I(inode)->root;
+ umode_t mode = inode->i_mode;
- if (btrfs_root_readonly(root) && (mask & MAY_WRITE))
- return -EROFS;
- if ((BTRFS_I(inode)->flags & BTRFS_INODE_READONLY) && (mask & MAY_WRITE))
- return -EACCES;
+ if (mask & MAY_WRITE &&
+ (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))) {
+ if (btrfs_root_readonly(root))
+ return -EROFS;
+ if (BTRFS_I(inode)->flags & BTRFS_INODE_READONLY)
+ return -EACCES;
+ }
return generic_permission(inode, mask);
}
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 7cf0133..970977a 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2236,6 +2236,10 @@
btrfs_wait_ordered_range(src, off, len);
}
+ /* truncate page cache pages from target inode range */
+ truncate_inode_pages_range(&inode->i_data, off,
+ ALIGN(off + len, PAGE_CACHE_SIZE) - 1);
+
/* clone data */
key.objectid = btrfs_ino(src);
key.type = BTRFS_EXTENT_DATA_KEY;
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index babee65..786639f 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -799,14 +799,15 @@
struct extent_buffer *eb, int slot,
struct btrfs_key *key)
{
- struct inode *dir;
- int ret;
struct btrfs_inode_ref *ref;
+ struct btrfs_dir_item *di;
+ struct inode *dir;
struct inode *inode;
- char *name;
- int namelen;
unsigned long ref_ptr;
unsigned long ref_end;
+ char *name;
+ int namelen;
+ int ret;
int search_done = 0;
/*
@@ -909,6 +910,25 @@
}
btrfs_release_path(path);
+ /* look for a conflicting sequence number */
+ di = btrfs_lookup_dir_index_item(trans, root, path, btrfs_ino(dir),
+ btrfs_inode_ref_index(eb, ref),
+ name, namelen, 0);
+ if (di && !IS_ERR(di)) {
+ ret = drop_one_dir_item(trans, root, path, dir, di);
+ BUG_ON(ret);
+ }
+ btrfs_release_path(path);
+
+ /* look for a conflicing name */
+ di = btrfs_lookup_dir_item(trans, root, path, btrfs_ino(dir),
+ name, namelen, 0);
+ if (di && !IS_ERR(di)) {
+ ret = drop_one_dir_item(trans, root, path, dir, di);
+ BUG_ON(ret);
+ }
+ btrfs_release_path(path);
+
insert:
/* insert our name */
ret = btrfs_add_link(trans, dir, inode, name, namelen, 0,
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 53875ae..f2a4cc7 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -142,6 +142,7 @@
unsigned long limit;
unsigned long last_waited = 0;
int force_reg = 0;
+ int sync_pending = 0;
struct blk_plug plug;
/*
@@ -229,6 +230,22 @@
BUG_ON(atomic_read(&cur->bi_cnt) == 0);
+ /*
+ * if we're doing the sync list, record that our
+ * plug has some sync requests on it
+ *
+ * If we're doing the regular list and there are
+ * sync requests sitting around, unplug before
+ * we add more
+ */
+ if (pending_bios == &device->pending_sync_bios) {
+ sync_pending = 1;
+ } else if (sync_pending) {
+ blk_finish_plug(&plug);
+ blk_start_plug(&plug);
+ sync_pending = 0;
+ }
+
submit_bio(cur->bi_rw, cur);
num_run++;
batch_run++;
@@ -500,6 +517,9 @@
fs_devices->rw_devices--;
}
+ if (device->can_discard)
+ fs_devices->num_can_discard--;
+
new_device = kmalloc(sizeof(*new_device), GFP_NOFS);
BUG_ON(!new_device);
memcpy(new_device, device, sizeof(*new_device));
@@ -508,6 +528,7 @@
new_device->bdev = NULL;
new_device->writeable = 0;
new_device->in_fs_metadata = 0;
+ new_device->can_discard = 0;
list_replace_rcu(&device->dev_list, &new_device->dev_list);
call_rcu(&device->rcu, free_device);
@@ -547,6 +568,7 @@
static int __btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
fmode_t flags, void *holder)
{
+ struct request_queue *q;
struct block_device *bdev;
struct list_head *head = &fs_devices->devices;
struct btrfs_device *device;
@@ -603,6 +625,12 @@
seeding = 0;
}
+ q = bdev_get_queue(bdev);
+ if (blk_queue_discard(q)) {
+ device->can_discard = 1;
+ fs_devices->num_can_discard++;
+ }
+
device->bdev = bdev;
device->in_fs_metadata = 0;
device->mode = flags;
@@ -835,6 +863,7 @@
max_hole_start = search_start;
max_hole_size = 0;
+ hole_size = 0;
if (search_start >= search_end) {
ret = -ENOSPC;
@@ -917,7 +946,14 @@
cond_resched();
}
- hole_size = search_end- search_start;
+ /*
+ * At this point, search_start should be the end of
+ * allocated dev extents, and when shrinking the device,
+ * search_end may be smaller than search_start.
+ */
+ if (search_end > search_start)
+ hole_size = search_end - search_start;
+
if (hole_size > max_hole_size) {
max_hole_start = search_start;
max_hole_size = hole_size;
@@ -1543,6 +1579,7 @@
int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
{
+ struct request_queue *q;
struct btrfs_trans_handle *trans;
struct btrfs_device *device;
struct block_device *bdev;
@@ -1612,6 +1649,9 @@
lock_chunks(root);
+ q = bdev_get_queue(bdev);
+ if (blk_queue_discard(q))
+ device->can_discard = 1;
device->writeable = 1;
device->work.func = pending_bios_fn;
generate_random_uuid(device->uuid);
@@ -1647,6 +1687,8 @@
root->fs_info->fs_devices->num_devices++;
root->fs_info->fs_devices->open_devices++;
root->fs_info->fs_devices->rw_devices++;
+ if (device->can_discard)
+ root->fs_info->fs_devices->num_can_discard++;
root->fs_info->fs_devices->total_rw_bytes += device->total_bytes;
if (!blk_queue_nonrot(bdev_get_queue(bdev)))
@@ -2413,9 +2455,10 @@
total_avail = device->total_bytes - device->bytes_used;
else
total_avail = 0;
- /* avail is off by max(alloc_start, 1MB), but that is the same
- * for all devices, so it doesn't hurt the sorting later on
- */
+
+ /* If there is no space on this device, skip it. */
+ if (total_avail == 0)
+ continue;
ret = find_free_dev_extent(trans, device,
max_stripe_size * dev_stripes,
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 7c12d61..6d866db 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -48,6 +48,7 @@
int writeable;
int in_fs_metadata;
int missing;
+ int can_discard;
spinlock_t io_lock;
@@ -104,6 +105,7 @@
u64 rw_devices;
u64 missing_devices;
u64 total_rw_bytes;
+ u64 num_can_discard;
struct block_device *latest_bdev;
/* all of the devices in the FS, protected by a mutex
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 2fe3cf1..6d40656 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -176,7 +176,7 @@
#ifdef CONFIG_CIFS_STATS2
seq_printf(m, " In Send: %d In MaxReq Wait: %d",
- atomic_read(&server->inSend),
+ atomic_read(&server->in_send),
atomic_read(&server->num_waiters));
#endif
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 21de1d6..d0f59fa 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -991,24 +991,6 @@
return pntsd;
}
-static int set_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb, __u16 fid,
- struct cifs_ntsd *pnntsd, u32 acllen)
-{
- int xid, rc;
- struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
-
- if (IS_ERR(tlink))
- return PTR_ERR(tlink);
-
- xid = GetXid();
- rc = CIFSSMBSetCIFSACL(xid, tlink_tcon(tlink), fid, pnntsd, acllen);
- FreeXid(xid);
- cifs_put_tlink(tlink);
-
- cFYI(DBG2, "SetCIFSACL rc = %d", rc);
- return rc;
-}
-
static int set_cifs_acl_by_path(struct cifs_sb_info *cifs_sb, const char *path,
struct cifs_ntsd *pnntsd, u32 acllen)
{
@@ -1047,18 +1029,10 @@
struct inode *inode, const char *path)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- struct cifsFileInfo *open_file;
- int rc;
cFYI(DBG2, "set ACL for %s from mode 0x%x", path, inode->i_mode);
- open_file = find_readable_file(CIFS_I(inode), true);
- if (!open_file)
- return set_cifs_acl_by_path(cifs_sb, path, pnntsd, acllen);
-
- rc = set_cifs_acl_by_fid(cifs_sb, open_file->netfid, pnntsd, acllen);
- cifsFileInfo_put(open_file);
- return rc;
+ return set_cifs_acl_by_path(cifs_sb, path, pnntsd, acllen);
}
/* Translate the CIFS ACL (simlar to NTFS ACL) for a file into mode bits */
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index cb71dc1..95da802 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -125,5 +125,5 @@
extern const struct export_operations cifs_export_ops;
#endif /* CIFS_NFSD_EXPORT */
-#define CIFS_VERSION "1.74"
+#define CIFS_VERSION "1.75"
#endif /* _CIFSFS_H */
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 38ce6d4..95dad9d 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -291,7 +291,7 @@
struct fscache_cookie *fscache; /* client index cache cookie */
#endif
#ifdef CONFIG_CIFS_STATS2
- atomic_t inSend; /* requests trying to send */
+ atomic_t in_send; /* requests trying to send */
atomic_t num_waiters; /* blocked waiting to get in sendrecv */
#endif
};
@@ -672,12 +672,54 @@
bool multiEnd:1; /* both received */
};
-struct oplock_q_entry {
- struct list_head qhead;
- struct inode *pinode;
- struct cifs_tcon *tcon;
- __u16 netfid;
-};
+/* Make code in transport.c a little cleaner by moving
+ update of optional stats into function below */
+#ifdef CONFIG_CIFS_STATS2
+
+static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
+{
+ atomic_inc(&server->in_send);
+}
+
+static inline void cifs_in_send_dec(struct TCP_Server_Info *server)
+{
+ atomic_dec(&server->in_send);
+}
+
+static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server)
+{
+ atomic_inc(&server->num_waiters);
+}
+
+static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server)
+{
+ atomic_dec(&server->num_waiters);
+}
+
+static inline void cifs_save_when_sent(struct mid_q_entry *mid)
+{
+ mid->when_sent = jiffies;
+}
+#else
+static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
+{
+}
+static inline void cifs_in_send_dec(struct TCP_Server_Info *server)
+{
+}
+
+static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server)
+{
+}
+
+static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server)
+{
+}
+
+static inline void cifs_save_when_sent(struct mid_q_entry *mid)
+{
+}
+#endif
/* for pending dnotify requests */
struct dir_notify_req {
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 80c2e3a..633c246 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -2878,7 +2878,8 @@
kfree(volume_info->username);
kzfree(volume_info->password);
kfree(volume_info->UNC);
- kfree(volume_info->UNCip);
+ if (volume_info->UNCip != volume_info->UNC + 2)
+ kfree(volume_info->UNCip);
kfree(volume_info->domainname);
kfree(volume_info->iocharset);
kfree(volume_info->prepath);
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index ae576fb..72d448b 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -105,8 +105,8 @@
}
rcu_read_unlock();
if (namelen != dfsplen || read_seqretry(&rename_lock, seq)) {
- cERROR(1, "did not end path lookup where expected namelen is %d",
- namelen);
+ cFYI(1, "did not end path lookup where expected. namelen=%d "
+ "dfsplen=%d", namelen, dfsplen);
/* presumably this is only possible if racing with a rename
of one of the parent directories (we can not lock the dentries
above us to prevent this, but retrying should be harmless) */
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index c1b9c4b..10ca6b2 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -266,15 +266,11 @@
while (1) {
if (atomic_read(&server->inFlight) >= cifs_max_pending) {
spin_unlock(&GlobalMid_Lock);
-#ifdef CONFIG_CIFS_STATS2
- atomic_inc(&server->num_waiters);
-#endif
+ cifs_num_waiters_inc(server);
wait_event(server->request_q,
atomic_read(&server->inFlight)
< cifs_max_pending);
-#ifdef CONFIG_CIFS_STATS2
- atomic_dec(&server->num_waiters);
-#endif
+ cifs_num_waiters_dec(server);
spin_lock(&GlobalMid_Lock);
} else {
if (server->tcpStatus == CifsExiting) {
@@ -381,15 +377,13 @@
mid->callback = callback;
mid->callback_data = cbdata;
mid->midState = MID_REQUEST_SUBMITTED;
-#ifdef CONFIG_CIFS_STATS2
- atomic_inc(&server->inSend);
-#endif
+
+ cifs_in_send_inc(server);
rc = smb_sendv(server, iov, nvec);
-#ifdef CONFIG_CIFS_STATS2
- atomic_dec(&server->inSend);
- mid->when_sent = jiffies;
-#endif
+ cifs_in_send_dec(server);
+ cifs_save_when_sent(mid);
mutex_unlock(&server->srv_mutex);
+
if (rc)
goto out_err;
@@ -575,14 +569,10 @@
}
midQ->midState = MID_REQUEST_SUBMITTED;
-#ifdef CONFIG_CIFS_STATS2
- atomic_inc(&ses->server->inSend);
-#endif
+ cifs_in_send_inc(ses->server);
rc = smb_sendv(ses->server, iov, n_vec);
-#ifdef CONFIG_CIFS_STATS2
- atomic_dec(&ses->server->inSend);
- midQ->when_sent = jiffies;
-#endif
+ cifs_in_send_dec(ses->server);
+ cifs_save_when_sent(midQ);
mutex_unlock(&ses->server->srv_mutex);
@@ -703,14 +693,11 @@
}
midQ->midState = MID_REQUEST_SUBMITTED;
-#ifdef CONFIG_CIFS_STATS2
- atomic_inc(&ses->server->inSend);
-#endif
+
+ cifs_in_send_inc(ses->server);
rc = smb_send(ses->server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
-#ifdef CONFIG_CIFS_STATS2
- atomic_dec(&ses->server->inSend);
- midQ->when_sent = jiffies;
-#endif
+ cifs_in_send_dec(ses->server);
+ cifs_save_when_sent(midQ);
mutex_unlock(&ses->server->srv_mutex);
if (rc < 0)
@@ -843,14 +830,10 @@
}
midQ->midState = MID_REQUEST_SUBMITTED;
-#ifdef CONFIG_CIFS_STATS2
- atomic_inc(&ses->server->inSend);
-#endif
+ cifs_in_send_inc(ses->server);
rc = smb_send(ses->server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
-#ifdef CONFIG_CIFS_STATS2
- atomic_dec(&ses->server->inSend);
- midQ->when_sent = jiffies;
-#endif
+ cifs_in_send_dec(ses->server);
+ cifs_save_when_sent(midQ);
mutex_unlock(&ses->server->srv_mutex);
if (rc < 0) {
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index bb85757..5802fa1 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -289,10 +289,10 @@
static inline int ext4_should_writeback_data(struct inode *inode)
{
- if (!S_ISREG(inode->i_mode))
- return 0;
if (EXT4_JOURNAL(inode) == NULL)
return 1;
+ if (!S_ISREG(inode->i_mode))
+ return 0;
if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA))
return 0;
if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
index b8602cd..0962642 100644
--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c
@@ -800,12 +800,17 @@
}
retry:
- if (rw == READ && ext4_should_dioread_nolock(inode))
+ if (rw == READ && ext4_should_dioread_nolock(inode)) {
+ if (unlikely(!list_empty(&ei->i_completed_io_list))) {
+ mutex_lock(&inode->i_mutex);
+ ext4_flush_completed_IO(inode);
+ mutex_unlock(&inode->i_mutex);
+ }
ret = __blockdev_direct_IO(rw, iocb, inode,
inode->i_sb->s_bdev, iov,
offset, nr_segs,
ext4_get_block, NULL, NULL, 0);
- else {
+ } else {
ret = blockdev_direct_IO(rw, iocb, inode, iov,
offset, nr_segs, ext4_get_block);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index d47264c..c4da98a 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -120,6 +120,12 @@
int err;
trace_ext4_evict_inode(inode);
+
+ mutex_lock(&inode->i_mutex);
+ ext4_flush_completed_IO(inode);
+ mutex_unlock(&inode->i_mutex);
+ ext4_ioend_wait(inode);
+
if (inode->i_nlink) {
/*
* When journalling data dirty buffers are tracked only in the
@@ -983,6 +989,8 @@
from = pos & (PAGE_CACHE_SIZE - 1);
to = from + len;
+ BUG_ON(!ext4_handle_valid(handle));
+
if (copied < len) {
if (!PageUptodate(page))
copied = 0;
@@ -1283,7 +1291,12 @@
else if (test_opt(inode->i_sb, MBLK_IO_SUBMIT))
err = ext4_bio_write_page(&io_submit, page,
len, mpd->wbc);
- else
+ else if (buffer_uninit(page_bufs)) {
+ ext4_set_bh_endio(page_bufs, inode);
+ err = block_write_full_page_endio(page,
+ noalloc_get_block_write,
+ mpd->wbc, ext4_end_io_buffer_write);
+ } else
err = block_write_full_page(page,
noalloc_get_block_write, mpd->wbc);
@@ -1699,6 +1712,8 @@
goto out;
}
+ BUG_ON(!ext4_handle_valid(handle));
+
ret = walk_page_buffers(handle, page_bufs, 0, len, NULL,
do_journal_get_write_access);
@@ -2668,8 +2683,15 @@
goto out;
}
- io_end->flag = EXT4_IO_END_UNWRITTEN;
+ /*
+ * It may be over-defensive here to check EXT4_IO_END_UNWRITTEN now,
+ * but being more careful is always safe for the future change.
+ */
inode = io_end->inode;
+ if (!(io_end->flag & EXT4_IO_END_UNWRITTEN)) {
+ io_end->flag |= EXT4_IO_END_UNWRITTEN;
+ atomic_inc(&EXT4_I(inode)->i_aiodio_unwritten);
+ }
/* Add the io_end to per-inode completed io list*/
spin_lock_irqsave(&EXT4_I(inode)->i_completed_io_lock, flags);
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 430c401..78839af 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -334,8 +334,10 @@
if ((io_end->num_io_pages >= MAX_IO_PAGES) &&
(io_end->pages[io_end->num_io_pages-1] != io_page))
goto submit_and_retry;
- if (buffer_uninit(bh))
- io->io_end->flag |= EXT4_IO_END_UNWRITTEN;
+ if (buffer_uninit(bh) && !(io_end->flag & EXT4_IO_END_UNWRITTEN)) {
+ io_end->flag |= EXT4_IO_END_UNWRITTEN;
+ atomic_inc(&EXT4_I(inode)->i_aiodio_unwritten);
+ }
io->io_end->size += bh->b_size;
io->io_next_block++;
ret = bio_add_page(io->io_bio, bh->b_page, bh->b_size, bh_offset(bh));
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 4687fea..44d0c8d 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -919,7 +919,6 @@
static void ext4_destroy_inode(struct inode *inode)
{
- ext4_ioend_wait(inode);
if (!list_empty(&(EXT4_I(inode)->i_orphan))) {
ext4_msg(inode->i_sb, KERN_ERR,
"Inode %lu (%p): orphan list check failed!",
diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index 4ad6473..5efbd5d 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c
@@ -1231,7 +1231,7 @@
struct super_block *sb = dir->i_sb;
struct msdos_sb_info *sbi = MSDOS_SB(sb);
struct buffer_head *bh, *prev, *bhs[3]; /* 32*slots (672bytes) */
- struct msdos_dir_entry *de;
+ struct msdos_dir_entry *uninitialized_var(de);
int err, free_slots, i, nr_bhs;
loff_t pos, i_pos;
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 5942fec..1726d73 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -1188,9 +1188,9 @@
out:
/* UTF-8 doesn't provide FAT semantics */
if (!strcmp(opts->iocharset, "utf8")) {
- fat_msg(sb, KERN_ERR, "utf8 is not a recommended IO charset"
+ fat_msg(sb, KERN_WARNING, "utf8 is not a recommended IO charset"
" for FAT filesystems, filesystem will be "
- "case sensitive!\n");
+ "case sensitive!");
}
/* If user doesn't specify allow_utime, it's initialized from dmask. */
@@ -1367,6 +1367,7 @@
sbi->free_clusters = -1; /* Don't know yet */
sbi->free_clus_valid = 0;
sbi->prev_free = FAT_START_ENT;
+ sb->s_maxbytes = 0xffffffff;
if (!sbi->fat_length && b->fat32_length) {
struct fat_boot_fsinfo *fsinfo;
@@ -1377,8 +1378,6 @@
sbi->fat_length = le32_to_cpu(b->fat32_length);
sbi->root_cluster = le32_to_cpu(b->root_cluster);
- sb->s_maxbytes = 0xffffffff;
-
/* MC - if info_sector is 0, don't multiply by 0 */
sbi->fsinfo_sector = le16_to_cpu(b->info_sector);
if (sbi->fsinfo_sector == 0)
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 640fc22..168a80f 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1358,6 +1358,10 @@
if (outarg.namelen > FUSE_NAME_MAX)
goto err;
+ err = -EINVAL;
+ if (size != sizeof(outarg) + outarg.namelen + 1)
+ goto err;
+
name.name = buf;
name.len = outarg.namelen;
err = fuse_copy_one(cs, buf, outarg.namelen + 1);
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index d480d9a..594f07a 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -14,6 +14,7 @@
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/compat.h>
+#include <linux/swap.h>
static const struct file_operations fuse_direct_io_file_operations;
@@ -245,6 +246,12 @@
req = ff->reserved_req;
fuse_prepare_release(ff, file->f_flags, opcode);
+ if (ff->flock) {
+ struct fuse_release_in *inarg = &req->misc.release.in;
+ inarg->release_flags |= FUSE_RELEASE_FLOCK_UNLOCK;
+ inarg->lock_owner = fuse_lock_owner_id(ff->fc,
+ (fl_owner_t) file);
+ }
/* Hold vfsmount and dentry until release is finished */
path_get(&file->f_path);
req->misc.release.path = file->f_path;
@@ -755,18 +762,6 @@
return req->misc.write.out.size;
}
-static int fuse_write_begin(struct file *file, struct address_space *mapping,
- loff_t pos, unsigned len, unsigned flags,
- struct page **pagep, void **fsdata)
-{
- pgoff_t index = pos >> PAGE_CACHE_SHIFT;
-
- *pagep = grab_cache_page_write_begin(mapping, index, flags);
- if (!*pagep)
- return -ENOMEM;
- return 0;
-}
-
void fuse_write_update_size(struct inode *inode, loff_t pos)
{
struct fuse_conn *fc = get_fuse_conn(inode);
@@ -779,62 +774,6 @@
spin_unlock(&fc->lock);
}
-static int fuse_buffered_write(struct file *file, struct inode *inode,
- loff_t pos, unsigned count, struct page *page)
-{
- int err;
- size_t nres;
- struct fuse_conn *fc = get_fuse_conn(inode);
- unsigned offset = pos & (PAGE_CACHE_SIZE - 1);
- struct fuse_req *req;
-
- if (is_bad_inode(inode))
- return -EIO;
-
- /*
- * Make sure writepages on the same page are not mixed up with
- * plain writes.
- */
- fuse_wait_on_page_writeback(inode, page->index);
-
- req = fuse_get_req(fc);
- if (IS_ERR(req))
- return PTR_ERR(req);
-
- req->in.argpages = 1;
- req->num_pages = 1;
- req->pages[0] = page;
- req->page_offset = offset;
- nres = fuse_send_write(req, file, pos, count, NULL);
- err = req->out.h.error;
- fuse_put_request(fc, req);
- if (!err && !nres)
- err = -EIO;
- if (!err) {
- pos += nres;
- fuse_write_update_size(inode, pos);
- if (count == PAGE_CACHE_SIZE)
- SetPageUptodate(page);
- }
- fuse_invalidate_attr(inode);
- return err ? err : nres;
-}
-
-static int fuse_write_end(struct file *file, struct address_space *mapping,
- loff_t pos, unsigned len, unsigned copied,
- struct page *page, void *fsdata)
-{
- struct inode *inode = mapping->host;
- int res = 0;
-
- if (copied)
- res = fuse_buffered_write(file, inode, pos, copied, page);
-
- unlock_page(page);
- page_cache_release(page);
- return res;
-}
-
static size_t fuse_send_write_pages(struct fuse_req *req, struct file *file,
struct inode *inode, loff_t pos,
size_t count)
@@ -908,6 +847,8 @@
pagefault_enable();
flush_dcache_page(page);
+ mark_page_accessed(page);
+
if (!tmp) {
unlock_page(page);
page_cache_release(page);
@@ -1559,11 +1500,14 @@
struct fuse_conn *fc = get_fuse_conn(inode);
int err;
- if (fc->no_lock) {
+ if (fc->no_flock) {
err = flock_lock_file_wait(file, fl);
} else {
+ struct fuse_file *ff = file->private_data;
+
/* emulate flock with POSIX locks */
fl->fl_owner = (fl_owner_t) file;
+ ff->flock = true;
err = fuse_setlk(file, fl, 1);
}
@@ -2201,8 +2145,6 @@
.readpage = fuse_readpage,
.writepage = fuse_writepage,
.launder_page = fuse_launder_page,
- .write_begin = fuse_write_begin,
- .write_end = fuse_write_end,
.readpages = fuse_readpages,
.set_page_dirty = __set_page_dirty_nobuffers,
.bmap = fuse_bmap,
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index c6aa2d4..cf6db0a 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -135,6 +135,9 @@
/** Wait queue head for poll */
wait_queue_head_t poll_wait;
+
+ /** Has flock been performed on this file? */
+ bool flock:1;
};
/** One input argument of a request */
@@ -448,7 +451,7 @@
/** Is removexattr not implemented by fs? */
unsigned no_removexattr:1;
- /** Are file locking primitives not implemented by fs? */
+ /** Are posix file locking primitives not implemented by fs? */
unsigned no_lock:1;
/** Is access not implemented by fs? */
@@ -472,6 +475,9 @@
/** Don't apply umask to creation modes */
unsigned dont_mask:1;
+ /** Are BSD file locking primitives not implemented by fs? */
+ unsigned no_flock:1;
+
/** The number of requests waiting for completion */
atomic_t num_waiting;
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 38f84cd..12b5029 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -71,7 +71,7 @@
unsigned blksize;
};
-struct fuse_forget_link *fuse_alloc_forget()
+struct fuse_forget_link *fuse_alloc_forget(void)
{
return kzalloc(sizeof(struct fuse_forget_link), GFP_KERNEL);
}
@@ -809,6 +809,10 @@
fc->async_read = 1;
if (!(arg->flags & FUSE_POSIX_LOCKS))
fc->no_lock = 1;
+ if (arg->minor >= 17) {
+ if (!(arg->flags & FUSE_FLOCK_LOCKS))
+ fc->no_flock = 1;
+ }
if (arg->flags & FUSE_ATOMIC_O_TRUNC)
fc->atomic_o_trunc = 1;
if (arg->minor >= 9) {
@@ -823,6 +827,7 @@
} else {
ra_pages = fc->max_read / PAGE_CACHE_SIZE;
fc->no_lock = 1;
+ fc->no_flock = 1;
}
fc->bdi.ra_pages = min(fc->bdi.ra_pages, ra_pages);
@@ -843,7 +848,8 @@
arg->minor = FUSE_KERNEL_MINOR_VERSION;
arg->max_readahead = fc->bdi.ra_pages * PAGE_CACHE_SIZE;
arg->flags |= FUSE_ASYNC_READ | FUSE_POSIX_LOCKS | FUSE_ATOMIC_O_TRUNC |
- FUSE_EXPORT_SUPPORT | FUSE_BIG_WRITES | FUSE_DONT_MASK;
+ FUSE_EXPORT_SUPPORT | FUSE_BIG_WRITES | FUSE_DONT_MASK |
+ FUSE_FLOCK_LOCKS;
req->in.h.opcode = FUSE_INIT;
req->in.numargs = 1;
req->in.args[0].size = sizeof(*arg);
diff --git a/fs/jfs/jfs_umount.c b/fs/jfs/jfs_umount.c
index adcf92d..7971f37 100644
--- a/fs/jfs/jfs_umount.c
+++ b/fs/jfs/jfs_umount.c
@@ -68,7 +68,7 @@
/*
* Wait for outstanding transactions to be written to log:
*/
- jfs_flush_journal(log, 1);
+ jfs_flush_journal(log, 2);
/*
* close fileset inode allocation map (aka fileset inode)
@@ -146,7 +146,7 @@
*
* remove file system from log active file system list.
*/
- jfs_flush_journal(log, 1);
+ jfs_flush_journal(log, 2);
/*
* Make sure all metadata makes it to disk
diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
index e56564d..9561c8f 100644
--- a/fs/nfs/blocklayout/blocklayout.c
+++ b/fs/nfs/blocklayout/blocklayout.c
@@ -36,6 +36,7 @@
#include <linux/namei.h>
#include <linux/bio.h> /* struct bio */
#include <linux/buffer_head.h> /* various write calls */
+#include <linux/prefetch.h>
#include "blocklayout.h"
diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h
index b257383..07df5f1 100644
--- a/fs/nfs/callback.h
+++ b/fs/nfs/callback.h
@@ -38,6 +38,7 @@
struct cb_process_state {
__be32 drc_status;
struct nfs_client *clp;
+ int slotid;
};
struct cb_compound_hdr_arg {
@@ -166,7 +167,6 @@
void *dummy, struct cb_process_state *cps);
extern void nfs4_check_drain_bc_complete(struct nfs4_session *ses);
-extern void nfs4_cb_take_slot(struct nfs_client *clp);
struct cb_devicenotifyitem {
uint32_t cbd_notify_type;
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
index 74780f9..43926ad 100644
--- a/fs/nfs/callback_proc.c
+++ b/fs/nfs/callback_proc.c
@@ -348,7 +348,7 @@
/* Normal */
if (likely(args->csa_sequenceid == slot->seq_nr + 1)) {
slot->seq_nr++;
- return htonl(NFS4_OK);
+ goto out_ok;
}
/* Replay */
@@ -367,11 +367,14 @@
/* Wraparound */
if (args->csa_sequenceid == 1 && (slot->seq_nr + 1) == 0) {
slot->seq_nr = 1;
- return htonl(NFS4_OK);
+ goto out_ok;
}
/* Misordered request */
return htonl(NFS4ERR_SEQ_MISORDERED);
+out_ok:
+ tbl->highest_used_slotid = args->csa_slotid;
+ return htonl(NFS4_OK);
}
/*
@@ -433,26 +436,37 @@
struct cb_sequenceres *res,
struct cb_process_state *cps)
{
+ struct nfs4_slot_table *tbl;
struct nfs_client *clp;
int i;
__be32 status = htonl(NFS4ERR_BADSESSION);
- cps->clp = NULL;
-
clp = nfs4_find_client_sessionid(args->csa_addr, &args->csa_sessionid);
if (clp == NULL)
goto out;
+ tbl = &clp->cl_session->bc_slot_table;
+
+ spin_lock(&tbl->slot_tbl_lock);
/* state manager is resetting the session */
if (test_bit(NFS4_SESSION_DRAINING, &clp->cl_session->session_state)) {
- status = NFS4ERR_DELAY;
+ spin_unlock(&tbl->slot_tbl_lock);
+ status = htonl(NFS4ERR_DELAY);
+ /* Return NFS4ERR_BADSESSION if we're draining the session
+ * in order to reset it.
+ */
+ if (test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state))
+ status = htonl(NFS4ERR_BADSESSION);
goto out;
}
status = validate_seqid(&clp->cl_session->bc_slot_table, args);
+ spin_unlock(&tbl->slot_tbl_lock);
if (status)
goto out;
+ cps->slotid = args->csa_slotid;
+
/*
* Check for pending referring calls. If a match is found, a
* related callback was received before the response to the original
@@ -469,7 +483,6 @@
res->csr_slotid = args->csa_slotid;
res->csr_highestslotid = NFS41_BC_MAX_CALLBACKS - 1;
res->csr_target_highestslotid = NFS41_BC_MAX_CALLBACKS - 1;
- nfs4_cb_take_slot(clp);
out:
cps->clp = clp; /* put in nfs4_callback_compound */
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index c6c86a7..918ad64 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -754,26 +754,15 @@
* Let the state manager know callback processing done.
* A single slot, so highest used slotid is either 0 or -1
*/
- tbl->highest_used_slotid--;
+ tbl->highest_used_slotid = -1;
nfs4_check_drain_bc_complete(session);
spin_unlock(&tbl->slot_tbl_lock);
}
-static void nfs4_cb_free_slot(struct nfs_client *clp)
+static void nfs4_cb_free_slot(struct cb_process_state *cps)
{
- if (clp && clp->cl_session)
- nfs4_callback_free_slot(clp->cl_session);
-}
-
-/* A single slot, so highest used slotid is either 0 or -1 */
-void nfs4_cb_take_slot(struct nfs_client *clp)
-{
- struct nfs4_slot_table *tbl = &clp->cl_session->bc_slot_table;
-
- spin_lock(&tbl->slot_tbl_lock);
- tbl->highest_used_slotid++;
- BUG_ON(tbl->highest_used_slotid != 0);
- spin_unlock(&tbl->slot_tbl_lock);
+ if (cps->slotid != -1)
+ nfs4_callback_free_slot(cps->clp->cl_session);
}
#else /* CONFIG_NFS_V4_1 */
@@ -784,7 +773,7 @@
return htonl(NFS4ERR_MINOR_VERS_MISMATCH);
}
-static void nfs4_cb_free_slot(struct nfs_client *clp)
+static void nfs4_cb_free_slot(struct cb_process_state *cps)
{
}
#endif /* CONFIG_NFS_V4_1 */
@@ -866,6 +855,7 @@
struct cb_process_state cps = {
.drc_status = 0,
.clp = NULL,
+ .slotid = -1,
};
unsigned int nops = 0;
@@ -906,7 +896,7 @@
*hdr_res.status = status;
*hdr_res.nops = htonl(nops);
- nfs4_cb_free_slot(cps.clp);
+ nfs4_cb_free_slot(&cps);
nfs_put_client(cps.clp);
dprintk("%s: done, status = %u\n", __func__, ntohl(status));
return rpc_success;
diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c
index 9383ca7..d0cda12 100644
--- a/fs/nfs/objlayout/objio_osd.c
+++ b/fs/nfs/objlayout/objio_osd.c
@@ -479,7 +479,6 @@
for (i = 0; i < ios->numdevs; i++) {
struct osd_sense_info osi;
struct osd_request *or = ios->per_dev[i].or;
- unsigned dev;
int ret;
if (!or)
@@ -500,9 +499,8 @@
continue; /* we recovered */
}
- dev = ios->per_dev[i].dev;
- objlayout_io_set_result(&ios->ol_state, dev,
- &ios->layout->comps[dev].oc_object_id,
+ objlayout_io_set_result(&ios->ol_state, i,
+ &ios->layout->comps[i].oc_object_id,
osd_pri_2_pnfs_err(osi.osd_err_pri),
ios->per_dev[i].offset,
ios->per_dev[i].length,
@@ -589,22 +587,19 @@
}
static int _add_stripe_unit(struct objio_state *ios, unsigned *cur_pg,
- unsigned pgbase, struct _objio_per_comp *per_dev, int cur_len,
+ unsigned pgbase, struct _objio_per_comp *per_dev, int len,
gfp_t gfp_flags)
{
unsigned pg = *cur_pg;
+ int cur_len = len;
struct request_queue *q =
osd_request_queue(_io_od(ios, per_dev->dev));
- per_dev->length += cur_len;
-
if (per_dev->bio == NULL) {
- unsigned stripes = ios->layout->num_comps /
- ios->layout->mirrors_p1;
- unsigned pages_in_stripe = stripes *
+ unsigned pages_in_stripe = ios->layout->group_width *
(ios->layout->stripe_unit / PAGE_SIZE);
unsigned bio_size = (ios->ol_state.nr_pages + pages_in_stripe) /
- stripes;
+ ios->layout->group_width;
if (BIO_MAX_PAGES_KMALLOC < bio_size)
bio_size = BIO_MAX_PAGES_KMALLOC;
@@ -632,6 +627,7 @@
}
BUG_ON(cur_len);
+ per_dev->length += len;
*cur_pg = pg;
return 0;
}
@@ -650,7 +646,7 @@
int ret = 0;
while (length) {
- struct _objio_per_comp *per_dev = &ios->per_dev[dev];
+ struct _objio_per_comp *per_dev = &ios->per_dev[dev - first_dev];
unsigned cur_len, page_off = 0;
if (!per_dev->length) {
@@ -670,8 +666,8 @@
cur_len = stripe_unit;
}
- if (max_comp < dev)
- max_comp = dev;
+ if (max_comp < dev - first_dev)
+ max_comp = dev - first_dev;
} else {
cur_len = stripe_unit;
}
@@ -806,7 +802,7 @@
struct _objio_per_comp *per_dev = &ios->per_dev[cur_comp];
unsigned dev = per_dev->dev;
struct pnfs_osd_object_cred *cred =
- &ios->layout->comps[dev];
+ &ios->layout->comps[cur_comp];
struct osd_obj_id obj = {
.partition = cred->oc_object_id.oid_partition_id,
.id = cred->oc_object_id.oid_object_id,
@@ -904,7 +900,7 @@
for (; cur_comp < last_comp; ++cur_comp, ++dev) {
struct osd_request *or = NULL;
struct pnfs_osd_object_cred *cred =
- &ios->layout->comps[dev];
+ &ios->layout->comps[cur_comp];
struct osd_obj_id obj = {
.partition = cred->oc_object_id.oid_partition_id,
.id = cred->oc_object_id.oid_object_id,
diff --git a/fs/nfs/objlayout/pnfs_osd_xdr_cli.c b/fs/nfs/objlayout/pnfs_osd_xdr_cli.c
index 16fc758..b3918f7 100644
--- a/fs/nfs/objlayout/pnfs_osd_xdr_cli.c
+++ b/fs/nfs/objlayout/pnfs_osd_xdr_cli.c
@@ -170,6 +170,9 @@
p = _osd_xdr_decode_data_map(p, &layout->olo_map);
layout->olo_comps_index = be32_to_cpup(p++);
layout->olo_num_comps = be32_to_cpup(p++);
+ dprintk("%s: olo_comps_index=%d olo_num_comps=%d\n", __func__,
+ layout->olo_comps_index, layout->olo_num_comps);
+
iter->total_comps = layout->olo_num_comps;
return 0;
}
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile
index 75bb316..427a4e8 100644
--- a/fs/xfs/Makefile
+++ b/fs/xfs/Makefile
@@ -16,44 +16,53 @@
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
-ccflags-y := -I$(src) -I$(src)/linux-2.6
-ccflags-$(CONFIG_XFS_DEBUG) += -g
+ccflags-y += -I$(src) # needed for trace events
-XFS_LINUX := linux-2.6
+ccflags-$(CONFIG_XFS_DEBUG) += -g
obj-$(CONFIG_XFS_FS) += xfs.o
-xfs-y += linux-2.6/xfs_trace.o
+# this one should be compiled first, as the tracing macros can easily blow up
+xfs-y += xfs_trace.o
-xfs-$(CONFIG_XFS_QUOTA) += $(addprefix quota/, \
- xfs_dquot.o \
- xfs_dquot_item.o \
- xfs_trans_dquot.o \
- xfs_qm_syscalls.o \
- xfs_qm_bhv.o \
- xfs_qm.o)
-xfs-$(CONFIG_XFS_QUOTA) += linux-2.6/xfs_quotaops.o
+# highlevel code
+xfs-y += xfs_aops.o \
+ xfs_bit.o \
+ xfs_buf.o \
+ xfs_dfrag.o \
+ xfs_discard.o \
+ xfs_error.o \
+ xfs_export.o \
+ xfs_file.o \
+ xfs_filestream.o \
+ xfs_fsops.o \
+ xfs_fs_subr.o \
+ xfs_globals.o \
+ xfs_iget.o \
+ xfs_ioctl.o \
+ xfs_iomap.o \
+ xfs_iops.o \
+ xfs_itable.o \
+ xfs_message.o \
+ xfs_mru_cache.o \
+ xfs_super.o \
+ xfs_sync.o \
+ xfs_xattr.o \
+ xfs_rename.o \
+ xfs_rw.o \
+ xfs_utils.o \
+ xfs_vnodeops.o \
+ kmem.o \
+ uuid.o
-ifeq ($(CONFIG_XFS_QUOTA),y)
-xfs-$(CONFIG_PROC_FS) += quota/xfs_qm_stats.o
-endif
-
-xfs-$(CONFIG_XFS_RT) += xfs_rtalloc.o
-xfs-$(CONFIG_XFS_POSIX_ACL) += $(XFS_LINUX)/xfs_acl.o
-xfs-$(CONFIG_PROC_FS) += $(XFS_LINUX)/xfs_stats.o
-xfs-$(CONFIG_SYSCTL) += $(XFS_LINUX)/xfs_sysctl.o
-xfs-$(CONFIG_COMPAT) += $(XFS_LINUX)/xfs_ioctl32.o
-
-
+# code shared with libxfs
xfs-y += xfs_alloc.o \
xfs_alloc_btree.o \
xfs_attr.o \
xfs_attr_leaf.o \
- xfs_bit.o \
xfs_bmap.o \
xfs_bmap_btree.o \
xfs_btree.o \
- xfs_buf_item.o \
xfs_da_btree.o \
xfs_dir2.o \
xfs_dir2_block.o \
@@ -61,49 +70,37 @@
xfs_dir2_leaf.o \
xfs_dir2_node.o \
xfs_dir2_sf.o \
- xfs_error.o \
- xfs_extfree_item.o \
- xfs_filestream.o \
- xfs_fsops.o \
xfs_ialloc.o \
xfs_ialloc_btree.o \
- xfs_iget.o \
xfs_inode.o \
- xfs_inode_item.o \
- xfs_iomap.o \
- xfs_itable.o \
- xfs_dfrag.o \
- xfs_log.o \
- xfs_log_cil.o \
xfs_log_recover.o \
xfs_mount.o \
- xfs_mru_cache.o \
- xfs_rename.o \
- xfs_trans.o \
+ xfs_trans.o
+
+# low-level transaction/log code
+xfs-y += xfs_log.o \
+ xfs_log_cil.o \
+ xfs_buf_item.o \
+ xfs_extfree_item.o \
+ xfs_inode_item.o \
xfs_trans_ail.o \
xfs_trans_buf.o \
xfs_trans_extfree.o \
xfs_trans_inode.o \
- xfs_utils.o \
- xfs_vnodeops.o \
- xfs_rw.o
-# Objects in linux/
-xfs-y += $(addprefix $(XFS_LINUX)/, \
- kmem.o \
- xfs_aops.o \
- xfs_buf.o \
- xfs_discard.o \
- xfs_export.o \
- xfs_file.o \
- xfs_fs_subr.o \
- xfs_globals.o \
- xfs_ioctl.o \
- xfs_iops.o \
- xfs_message.o \
- xfs_super.o \
- xfs_sync.o \
- xfs_xattr.o)
-
-# Objects in support/
-xfs-y += support/uuid.o
+# optional features
+xfs-$(CONFIG_XFS_QUOTA) += xfs_dquot.o \
+ xfs_dquot_item.o \
+ xfs_trans_dquot.o \
+ xfs_qm_syscalls.o \
+ xfs_qm_bhv.o \
+ xfs_qm.o \
+ xfs_quotaops.o
+ifeq ($(CONFIG_XFS_QUOTA),y)
+xfs-$(CONFIG_PROC_FS) += xfs_qm_stats.o
+endif
+xfs-$(CONFIG_XFS_RT) += xfs_rtalloc.o
+xfs-$(CONFIG_XFS_POSIX_ACL) += xfs_acl.o
+xfs-$(CONFIG_PROC_FS) += xfs_stats.o
+xfs-$(CONFIG_SYSCTL) += xfs_sysctl.o
+xfs-$(CONFIG_COMPAT) += xfs_ioctl32.o
diff --git a/fs/xfs/linux-2.6/kmem.c b/fs/xfs/kmem.c
similarity index 100%
rename from fs/xfs/linux-2.6/kmem.c
rename to fs/xfs/kmem.c
diff --git a/fs/xfs/linux-2.6/kmem.h b/fs/xfs/kmem.h
similarity index 100%
rename from fs/xfs/linux-2.6/kmem.h
rename to fs/xfs/kmem.h
diff --git a/fs/xfs/linux-2.6/mrlock.h b/fs/xfs/mrlock.h
similarity index 100%
rename from fs/xfs/linux-2.6/mrlock.h
rename to fs/xfs/mrlock.h
diff --git a/fs/xfs/linux-2.6/time.h b/fs/xfs/time.h
similarity index 100%
rename from fs/xfs/linux-2.6/time.h
rename to fs/xfs/time.h
diff --git a/fs/xfs/support/uuid.c b/fs/xfs/uuid.c
similarity index 100%
rename from fs/xfs/support/uuid.c
rename to fs/xfs/uuid.c
diff --git a/fs/xfs/support/uuid.h b/fs/xfs/uuid.h
similarity index 100%
rename from fs/xfs/support/uuid.h
rename to fs/xfs/uuid.h
diff --git a/fs/xfs/xfs.h b/fs/xfs/xfs.h
index 53ec3ea..d8b11b7 100644
--- a/fs/xfs/xfs.h
+++ b/fs/xfs/xfs.h
@@ -24,5 +24,6 @@
#define XFS_BUF_LOCK_TRACKING 1
#endif
-#include <linux-2.6/xfs_linux.h>
+#include "xfs_linux.h"
+
#endif /* __XFS_H__ */
diff --git a/fs/xfs/linux-2.6/xfs_acl.c b/fs/xfs/xfs_acl.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_acl.c
rename to fs/xfs/xfs_acl.c
diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/xfs_aops.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_aops.c
rename to fs/xfs/xfs_aops.c
diff --git a/fs/xfs/linux-2.6/xfs_aops.h b/fs/xfs/xfs_aops.h
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_aops.h
rename to fs/xfs/xfs_aops.h
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/xfs_buf.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_buf.c
rename to fs/xfs/xfs_buf.c
diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/xfs_buf.h
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_buf.h
rename to fs/xfs/xfs_buf.h
diff --git a/fs/xfs/linux-2.6/xfs_discard.c b/fs/xfs/xfs_discard.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_discard.c
rename to fs/xfs/xfs_discard.c
diff --git a/fs/xfs/linux-2.6/xfs_discard.h b/fs/xfs/xfs_discard.h
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_discard.h
rename to fs/xfs/xfs_discard.h
diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/xfs_dquot.c
similarity index 100%
rename from fs/xfs/quota/xfs_dquot.c
rename to fs/xfs/xfs_dquot.c
diff --git a/fs/xfs/quota/xfs_dquot.h b/fs/xfs/xfs_dquot.h
similarity index 100%
rename from fs/xfs/quota/xfs_dquot.h
rename to fs/xfs/xfs_dquot.h
diff --git a/fs/xfs/quota/xfs_dquot_item.c b/fs/xfs/xfs_dquot_item.c
similarity index 100%
rename from fs/xfs/quota/xfs_dquot_item.c
rename to fs/xfs/xfs_dquot_item.c
diff --git a/fs/xfs/quota/xfs_dquot_item.h b/fs/xfs/xfs_dquot_item.h
similarity index 100%
rename from fs/xfs/quota/xfs_dquot_item.h
rename to fs/xfs/xfs_dquot_item.h
diff --git a/fs/xfs/linux-2.6/xfs_export.c b/fs/xfs/xfs_export.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_export.c
rename to fs/xfs/xfs_export.c
diff --git a/fs/xfs/linux-2.6/xfs_export.h b/fs/xfs/xfs_export.h
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_export.h
rename to fs/xfs/xfs_export.h
diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/xfs_file.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_file.c
rename to fs/xfs/xfs_file.c
diff --git a/fs/xfs/linux-2.6/xfs_fs_subr.c b/fs/xfs/xfs_fs_subr.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_fs_subr.c
rename to fs/xfs/xfs_fs_subr.c
diff --git a/fs/xfs/linux-2.6/xfs_globals.c b/fs/xfs/xfs_globals.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_globals.c
rename to fs/xfs/xfs_globals.c
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_ioctl.c
rename to fs/xfs/xfs_ioctl.c
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.h b/fs/xfs/xfs_ioctl.h
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_ioctl.h
rename to fs/xfs/xfs_ioctl.h
diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_ioctl32.c
rename to fs/xfs/xfs_ioctl32.c
diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.h b/fs/xfs/xfs_ioctl32.h
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_ioctl32.h
rename to fs/xfs/xfs_ioctl32.h
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/xfs_iops.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_iops.c
rename to fs/xfs/xfs_iops.c
diff --git a/fs/xfs/linux-2.6/xfs_iops.h b/fs/xfs/xfs_iops.h
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_iops.h
rename to fs/xfs/xfs_iops.h
diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/xfs_linux.h
similarity index 95%
rename from fs/xfs/linux-2.6/xfs_linux.h
rename to fs/xfs/xfs_linux.h
index d42f814..1e8a45e 100644
--- a/fs/xfs/linux-2.6/xfs_linux.h
+++ b/fs/xfs/xfs_linux.h
@@ -32,13 +32,12 @@
# define XFS_BIG_INUMS 0
#endif
-#include <xfs_types.h>
+#include "xfs_types.h"
-#include <kmem.h>
-#include <mrlock.h>
-#include <time.h>
-
-#include <support/uuid.h>
+#include "kmem.h"
+#include "mrlock.h"
+#include "time.h"
+#include "uuid.h"
#include <linux/semaphore.h>
#include <linux/mm.h>
@@ -78,14 +77,14 @@
#include <asm/byteorder.h>
#include <asm/unaligned.h>
-#include <xfs_vnode.h>
-#include <xfs_stats.h>
-#include <xfs_sysctl.h>
-#include <xfs_iops.h>
-#include <xfs_aops.h>
-#include <xfs_super.h>
-#include <xfs_buf.h>
-#include <xfs_message.h>
+#include "xfs_vnode.h"
+#include "xfs_stats.h"
+#include "xfs_sysctl.h"
+#include "xfs_iops.h"
+#include "xfs_aops.h"
+#include "xfs_super.h"
+#include "xfs_buf.h"
+#include "xfs_message.h"
#ifdef __BIG_ENDIAN
#define XFS_NATIVE_HOST 1
diff --git a/fs/xfs/linux-2.6/xfs_message.c b/fs/xfs/xfs_message.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_message.c
rename to fs/xfs/xfs_message.c
diff --git a/fs/xfs/linux-2.6/xfs_message.h b/fs/xfs/xfs_message.h
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_message.h
rename to fs/xfs/xfs_message.h
diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/xfs_qm.c
similarity index 100%
rename from fs/xfs/quota/xfs_qm.c
rename to fs/xfs/xfs_qm.c
diff --git a/fs/xfs/quota/xfs_qm.h b/fs/xfs/xfs_qm.h
similarity index 100%
rename from fs/xfs/quota/xfs_qm.h
rename to fs/xfs/xfs_qm.h
diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/xfs_qm_bhv.c
similarity index 100%
rename from fs/xfs/quota/xfs_qm_bhv.c
rename to fs/xfs/xfs_qm_bhv.c
diff --git a/fs/xfs/quota/xfs_qm_stats.c b/fs/xfs/xfs_qm_stats.c
similarity index 100%
rename from fs/xfs/quota/xfs_qm_stats.c
rename to fs/xfs/xfs_qm_stats.c
diff --git a/fs/xfs/quota/xfs_qm_stats.h b/fs/xfs/xfs_qm_stats.h
similarity index 100%
rename from fs/xfs/quota/xfs_qm_stats.h
rename to fs/xfs/xfs_qm_stats.h
diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
similarity index 100%
rename from fs/xfs/quota/xfs_qm_syscalls.c
rename to fs/xfs/xfs_qm_syscalls.c
diff --git a/fs/xfs/quota/xfs_quota_priv.h b/fs/xfs/xfs_quota_priv.h
similarity index 100%
rename from fs/xfs/quota/xfs_quota_priv.h
rename to fs/xfs/xfs_quota_priv.h
diff --git a/fs/xfs/linux-2.6/xfs_quotaops.c b/fs/xfs/xfs_quotaops.c
similarity index 98%
rename from fs/xfs/linux-2.6/xfs_quotaops.c
rename to fs/xfs/xfs_quotaops.c
index 29b9d64..7e76f53 100644
--- a/fs/xfs/linux-2.6/xfs_quotaops.c
+++ b/fs/xfs/xfs_quotaops.c
@@ -25,7 +25,7 @@
#include "xfs_trans.h"
#include "xfs_bmap_btree.h"
#include "xfs_inode.h"
-#include "quota/xfs_qm.h"
+#include "xfs_qm.h"
#include <linux/quota.h>
diff --git a/fs/xfs/linux-2.6/xfs_stats.c b/fs/xfs/xfs_stats.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_stats.c
rename to fs/xfs/xfs_stats.c
diff --git a/fs/xfs/linux-2.6/xfs_stats.h b/fs/xfs/xfs_stats.h
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_stats.h
rename to fs/xfs/xfs_stats.h
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/xfs_super.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_super.c
rename to fs/xfs/xfs_super.c
diff --git a/fs/xfs/linux-2.6/xfs_super.h b/fs/xfs/xfs_super.h
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_super.h
rename to fs/xfs/xfs_super.h
diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/xfs_sync.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_sync.c
rename to fs/xfs/xfs_sync.c
diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/xfs_sync.h
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_sync.h
rename to fs/xfs/xfs_sync.h
diff --git a/fs/xfs/linux-2.6/xfs_sysctl.c b/fs/xfs/xfs_sysctl.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_sysctl.c
rename to fs/xfs/xfs_sysctl.c
diff --git a/fs/xfs/linux-2.6/xfs_sysctl.h b/fs/xfs/xfs_sysctl.h
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_sysctl.h
rename to fs/xfs/xfs_sysctl.h
diff --git a/fs/xfs/linux-2.6/xfs_trace.c b/fs/xfs/xfs_trace.c
similarity index 95%
rename from fs/xfs/linux-2.6/xfs_trace.c
rename to fs/xfs/xfs_trace.c
index 88d25d4..9010ce8 100644
--- a/fs/xfs/linux-2.6/xfs_trace.c
+++ b/fs/xfs/xfs_trace.c
@@ -43,8 +43,8 @@
#include "xfs_quota.h"
#include "xfs_iomap.h"
#include "xfs_aops.h"
-#include "quota/xfs_dquot_item.h"
-#include "quota/xfs_dquot.h"
+#include "xfs_dquot_item.h"
+#include "xfs_dquot.h"
#include "xfs_log_recover.h"
#include "xfs_inode_item.h"
diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/xfs_trace.h
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_trace.h
rename to fs/xfs/xfs_trace.h
diff --git a/fs/xfs/quota/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c
similarity index 100%
rename from fs/xfs/quota/xfs_trans_dquot.c
rename to fs/xfs/xfs_trans_dquot.c
diff --git a/fs/xfs/linux-2.6/xfs_vnode.h b/fs/xfs/xfs_vnode.h
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_vnode.h
rename to fs/xfs/xfs_vnode.h
diff --git a/fs/xfs/linux-2.6/xfs_xattr.c b/fs/xfs/xfs_xattr.c
similarity index 100%
rename from fs/xfs/linux-2.6/xfs_xattr.c
rename to fs/xfs/xfs_xattr.c
diff --git a/include/asm-generic/memory_model.h b/include/asm-generic/memory_model.h
index fb2d63f..aea9e45 100644
--- a/include/asm-generic/memory_model.h
+++ b/include/asm-generic/memory_model.h
@@ -39,7 +39,7 @@
})
#define __page_to_pfn(pg) \
-({ struct page *__pg = (pg); \
+({ const struct page *__pg = (pg); \
struct pglist_data *__pgdat = NODE_DATA(page_to_nid(__pg)); \
(unsigned long)(__pg - __pgdat->node_mem_map) + \
__pgdat->node_start_pfn; \
@@ -57,7 +57,7 @@
* section[i].section_mem_map == mem_map's address - start_pfn;
*/
#define __page_to_pfn(pg) \
-({ struct page *__pg = (pg); \
+({ const struct page *__pg = (pg); \
int __sec = page_to_section(__pg); \
(unsigned long)(__pg - __section_mem_map_addr(__nr_to_section(__sec))); \
})
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 6395692..32f0076 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -125,7 +125,11 @@
__REQ_SYNC, /* request is sync (sync write or read) */
__REQ_META, /* metadata io request */
__REQ_DISCARD, /* request to discard sectors */
+ __REQ_SECURE, /* secure discard (used with __REQ_DISCARD) */
+
__REQ_NOIDLE, /* don't anticipate more IO after this one */
+ __REQ_FUA, /* forced unit access */
+ __REQ_FLUSH, /* request for cache flush */
/* bio only flags */
__REQ_RAHEAD, /* read ahead, can fail anytime */
@@ -135,7 +139,6 @@
/* request only flags */
__REQ_SORTED, /* elevator knows about this request */
__REQ_SOFTBARRIER, /* may not be passed by ioscheduler */
- __REQ_FUA, /* forced unit access */
__REQ_NOMERGE, /* don't touch this for merging */
__REQ_STARTED, /* drive already may have started this one */
__REQ_DONTPREP, /* don't call prep for this one */
@@ -146,11 +149,9 @@
__REQ_PREEMPT, /* set for "ide_preempt" requests */
__REQ_ALLOCED, /* request came from our alloc pool */
__REQ_COPY_USER, /* contains copies of user pages */
- __REQ_FLUSH, /* request for cache flush */
__REQ_FLUSH_SEQ, /* request for flush sequence */
__REQ_IO_STAT, /* account I/O stat */
__REQ_MIXED_MERGE, /* merge of different types, fail separately */
- __REQ_SECURE, /* secure discard (used with __REQ_DISCARD) */
__REQ_NR_BITS, /* stops here */
};
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 0e67c45..84b15d5 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -30,6 +30,7 @@
struct blk_trace;
struct request;
struct sg_io_hdr;
+struct bsg_job;
#define BLKDEV_MIN_RQ 4
#define BLKDEV_MAX_RQ 128 /* Default maximum */
@@ -117,6 +118,7 @@
struct {
unsigned int seq;
struct list_head list;
+ rq_end_io_fn *saved_end_io;
} flush;
};
@@ -209,6 +211,7 @@
typedef void (softirq_done_fn)(struct request *);
typedef int (dma_drain_needed_fn)(struct request *);
typedef int (lld_busy_fn) (struct request_queue *q);
+typedef int (bsg_job_fn) (struct bsg_job *);
enum blk_eh_timer_return {
BLK_EH_NOT_HANDLED,
@@ -375,6 +378,8 @@
struct mutex sysfs_lock;
#if defined(CONFIG_BLK_DEV_BSG)
+ bsg_job_fn *bsg_job_fn;
+ int bsg_job_size;
struct bsg_class_device bsg_dev;
#endif
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index 8c7c2de..8e9e4bc 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -14,7 +14,7 @@
enum blktrace_cat {
BLK_TC_READ = 1 << 0, /* reads */
BLK_TC_WRITE = 1 << 1, /* writes */
- BLK_TC_BARRIER = 1 << 2, /* barrier */
+ BLK_TC_FLUSH = 1 << 2, /* flush */
BLK_TC_SYNC = 1 << 3, /* sync IO */
BLK_TC_SYNCIO = BLK_TC_SYNC,
BLK_TC_QUEUE = 1 << 4, /* queueing/merging */
@@ -28,8 +28,9 @@
BLK_TC_META = 1 << 12, /* metadata */
BLK_TC_DISCARD = 1 << 13, /* discard requests */
BLK_TC_DRV_DATA = 1 << 14, /* binary per-driver data */
+ BLK_TC_FUA = 1 << 15, /* fua requests */
- BLK_TC_END = 1 << 15, /* only 16-bits, reminder */
+ BLK_TC_END = 1 << 15, /* we've run out of bits! */
};
#define BLK_TC_SHIFT (16)
diff --git a/include/linux/bsg-lib.h b/include/linux/bsg-lib.h
new file mode 100644
index 0000000..f55ab8c
--- /dev/null
+++ b/include/linux/bsg-lib.h
@@ -0,0 +1,73 @@
+/*
+ * BSG helper library
+ *
+ * Copyright (C) 2008 James Smart, Emulex Corporation
+ * Copyright (C) 2011 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2011 Mike Christie
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+#ifndef _BLK_BSG_
+#define _BLK_BSG_
+
+#include <linux/blkdev.h>
+
+struct request;
+struct device;
+struct scatterlist;
+struct request_queue;
+
+struct bsg_buffer {
+ unsigned int payload_len;
+ int sg_cnt;
+ struct scatterlist *sg_list;
+};
+
+struct bsg_job {
+ struct device *dev;
+ struct request *req;
+
+ /* Transport/driver specific request/reply structs */
+ void *request;
+ void *reply;
+
+ unsigned int request_len;
+ unsigned int reply_len;
+ /*
+ * On entry : reply_len indicates the buffer size allocated for
+ * the reply.
+ *
+ * Upon completion : the message handler must set reply_len
+ * to indicates the size of the reply to be returned to the
+ * caller.
+ */
+
+ /* DMA payloads for the request/response */
+ struct bsg_buffer request_payload;
+ struct bsg_buffer reply_payload;
+
+ void *dd_data; /* Used for driver-specific storage */
+};
+
+void bsg_job_done(struct bsg_job *job, int result,
+ unsigned int reply_payload_rcv_len);
+int bsg_setup_queue(struct device *dev, struct request_queue *q, char *name,
+ bsg_job_fn *job_fn, int dd_job_size);
+void bsg_request_fn(struct request_queue *q);
+void bsg_remove_queue(struct request_queue *q);
+void bsg_goose_queue(struct request_queue *q);
+
+#endif
diff --git a/include/linux/fuse.h b/include/linux/fuse.h
index d464de5..464cff5 100644
--- a/include/linux/fuse.h
+++ b/include/linux/fuse.h
@@ -47,6 +47,9 @@
* - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct
* fuse_ioctl_iovec' instead of ambiguous 'struct iovec'
* - add FUSE_IOCTL_32BIT flag
+ *
+ * 7.17
+ * - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK
*/
#ifndef _LINUX_FUSE_H
@@ -78,7 +81,7 @@
#define FUSE_KERNEL_VERSION 7
/** Minor version number of this interface */
-#define FUSE_KERNEL_MINOR_VERSION 16
+#define FUSE_KERNEL_MINOR_VERSION 17
/** The node ID of the root inode */
#define FUSE_ROOT_ID 1
@@ -153,8 +156,10 @@
/**
* INIT request/reply flags
*
+ * FUSE_POSIX_LOCKS: remote locking for POSIX file locks
* FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
* FUSE_DONT_MASK: don't apply umask to file mode on create operations
+ * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks
*/
#define FUSE_ASYNC_READ (1 << 0)
#define FUSE_POSIX_LOCKS (1 << 1)
@@ -163,6 +168,7 @@
#define FUSE_EXPORT_SUPPORT (1 << 4)
#define FUSE_BIG_WRITES (1 << 5)
#define FUSE_DONT_MASK (1 << 6)
+#define FUSE_FLOCK_LOCKS (1 << 10)
/**
* CUSE INIT request/reply flags
@@ -175,6 +181,7 @@
* Release flags
*/
#define FUSE_RELEASE_FLUSH (1 << 0)
+#define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1)
/**
* Getattr flags
diff --git a/include/linux/hash.h b/include/linux/hash.h
index 06d25c1..b80506b 100644
--- a/include/linux/hash.h
+++ b/include/linux/hash.h
@@ -63,7 +63,7 @@
return hash >> (32 - bits);
}
-static inline unsigned long hash_ptr(void *ptr, unsigned int bits)
+static inline unsigned long hash_ptr(const void *ptr, unsigned int bits)
{
return hash_long((unsigned long)ptr, bits);
}
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 87a06f3..5951730 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -23,6 +23,7 @@
#include <linux/errno.h>
#include <linux/topology.h>
#include <linux/wait.h>
+#include <linux/module.h>
#include <asm/irq.h>
#include <asm/ptrace.h>
@@ -547,7 +548,15 @@
return d->msi_desc;
}
-int irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node);
+int __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node,
+ struct module *owner);
+
+static inline int irq_alloc_descs(int irq, unsigned int from, unsigned int cnt,
+ int node)
+{
+ return __irq_alloc_descs(irq, from, cnt, node, THIS_MODULE);
+}
+
void irq_free_descs(unsigned int irq, unsigned int cnt);
int irq_reserve_irqs(unsigned int from, unsigned int cnt);
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index 2d921b3..150134a 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -66,6 +66,7 @@
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *dir;
#endif
+ struct module *owner;
const char *name;
} ____cacheline_internodealigned_in_smp;
diff --git a/include/linux/loop.h b/include/linux/loop.h
index 66c194e..683d698 100644
--- a/include/linux/loop.h
+++ b/include/linux/loop.h
@@ -64,7 +64,6 @@
struct request_queue *lo_queue;
struct gendisk *lo_disk;
- struct list_head lo_list;
};
#endif /* __KERNEL__ */
@@ -161,4 +160,8 @@
#define LOOP_CHANGE_FD 0x4C06
#define LOOP_SET_CAPACITY 0x4C07
+/* /dev/loop-control interface */
+#define LOOP_CTL_ADD 0x4C80
+#define LOOP_CTL_REMOVE 0x4C81
+#define LOOP_CTL_GET_FREE 0x4C82
#endif
diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h
index 18fd130..c309b1e 100644
--- a/include/linux/miscdevice.h
+++ b/include/linux/miscdevice.h
@@ -40,6 +40,7 @@
#define BTRFS_MINOR 234
#define AUTOFS_MINOR 235
#define MAPPER_CTRL_MINOR 236
+#define LOOP_CTRL_MINOR 237
#define MISC_DYNAMIC_MINOR 255
struct device;
diff --git a/include/linux/mm.h b/include/linux/mm.h
index fd599f4..7438071 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -685,7 +685,7 @@
page->flags |= (section & SECTIONS_MASK) << SECTIONS_PGSHIFT;
}
-static inline unsigned long page_to_section(struct page *page)
+static inline unsigned long page_to_section(const struct page *page)
{
return (page->flags >> SECTIONS_PGSHIFT) & SECTIONS_MASK;
}
@@ -720,7 +720,7 @@
static __always_inline void *lowmem_page_address(const struct page *page)
{
- return __va(PFN_PHYS(page_to_pfn((struct page *)page)));
+ return __va(PFN_PHYS(page_to_pfn(page)));
}
#if defined(CONFIG_HIGHMEM) && !defined(WANT_PAGE_VIRTUAL)
@@ -737,7 +737,7 @@
#endif
#if defined(HASHED_PAGE_VIRTUAL)
-void *page_address(struct page *page);
+void *page_address(const struct page *page);
void set_page_address(struct page *page, void *virtual);
void page_address_init(void);
#endif
diff --git a/include/linux/pci.h b/include/linux/pci.h
index f27893b..8c230cb 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -251,7 +251,8 @@
u8 revision; /* PCI revision, low byte of class word */
u8 hdr_type; /* PCI header type (`multi' flag masked out) */
u8 pcie_cap; /* PCI-E capability offset */
- u8 pcie_type; /* PCI-E device/port type */
+ u8 pcie_type:4; /* PCI-E device/port type */
+ u8 pcie_mpss:3; /* PCI-E Max Payload Size Supported */
u8 rom_base_reg; /* which config register controls the ROM */
u8 pin; /* which interrupt pin this device uses */
@@ -617,6 +618,16 @@
/* these external functions are only available when PCI support is enabled */
#ifdef CONFIG_PCI
+extern void pcie_bus_configure_settings(struct pci_bus *bus, u8 smpss);
+
+enum pcie_bus_config_types {
+ PCIE_BUS_PERFORMANCE,
+ PCIE_BUS_SAFE,
+ PCIE_BUS_PEER2PEER,
+};
+
+extern enum pcie_bus_config_types pcie_bus_config;
+
extern struct bus_type pci_bus_type;
/* Do NOT directly access these two variables, unless you are arch specific pci
@@ -796,10 +807,13 @@
int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc);
int pcie_get_readrq(struct pci_dev *dev);
int pcie_set_readrq(struct pci_dev *dev, int rq);
+int pcie_get_mps(struct pci_dev *dev);
+int pcie_set_mps(struct pci_dev *dev, int mps);
int __pci_reset_function(struct pci_dev *dev);
int pci_reset_function(struct pci_dev *dev);
void pci_update_resource(struct pci_dev *dev, int resno);
int __must_check pci_assign_resource(struct pci_dev *dev, int i);
+int __must_check pci_reassign_resource(struct pci_dev *dev, int i, resource_size_t add_size, resource_size_t align);
int pci_select_bars(struct pci_dev *dev, unsigned long flags);
/* ROM control related routines */
diff --git a/include/linux/personality.h b/include/linux/personality.h
index eec3bae..8fc7dd1a 100644
--- a/include/linux/personality.h
+++ b/include/linux/personality.h
@@ -22,6 +22,7 @@
* These occupy the top three bytes.
*/
enum {
+ UNAME26 = 0x0020000,
ADDR_NO_RANDOMIZE = 0x0040000, /* disable randomization of VA space */
FDPIC_FUNCPTRS = 0x0080000, /* userspace function ptrs point to descriptors
* (signal handling)
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 21097cb..f9ec173 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -72,8 +72,6 @@
extern void pm_genpd_init(struct generic_pm_domain *genpd,
struct dev_power_governor *gov, bool is_off);
extern int pm_genpd_poweron(struct generic_pm_domain *genpd);
-extern void pm_genpd_poweroff_unused(void);
-extern void genpd_queue_power_off_work(struct generic_pm_domain *genpd);
#else
static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
struct device *dev)
@@ -101,8 +99,14 @@
{
return -ENOSYS;
}
-static inline void pm_genpd_poweroff_unused(void) {}
+#endif
+
+#ifdef CONFIG_PM_GENERIC_DOMAINS_RUNTIME
+extern void genpd_queue_power_off_work(struct generic_pm_domain *genpd);
+extern void pm_genpd_poweroff_unused(void);
+#else
static inline void genpd_queue_power_off_work(struct generic_pm_domain *gpd) {}
+static inline void pm_genpd_poweroff_unused(void) {}
#endif
#endif /* _LINUX_PM_DOMAIN_H */
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index b27ebea..93f4d03 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -97,6 +97,9 @@
#define RTC_AF 0x20 /* Alarm interrupt */
#define RTC_UF 0x10 /* Update interrupt for 1Hz RTC */
+
+#define RTC_MAX_FREQ 8192
+
#ifdef __KERNEL__
#include <linux/types.h>
diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index bf36654..05c5e61 100644
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -8,6 +8,8 @@
#include <linux/blkdev.h>
#include <linux/tracepoint.h>
+#define RWBS_LEN 8
+
DECLARE_EVENT_CLASS(block_rq_with_error,
TP_PROTO(struct request_queue *q, struct request *rq),
@@ -19,7 +21,7 @@
__field( sector_t, sector )
__field( unsigned int, nr_sector )
__field( int, errors )
- __array( char, rwbs, 6 )
+ __array( char, rwbs, RWBS_LEN )
__dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
),
@@ -104,7 +106,7 @@
__field( sector_t, sector )
__field( unsigned int, nr_sector )
__field( unsigned int, bytes )
- __array( char, rwbs, 6 )
+ __array( char, rwbs, RWBS_LEN )
__array( char, comm, TASK_COMM_LEN )
__dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
),
@@ -183,7 +185,7 @@
__field( dev_t, dev )
__field( sector_t, sector )
__field( unsigned int, nr_sector )
- __array( char, rwbs, 6 )
+ __array( char, rwbs, RWBS_LEN )
__array( char, comm, TASK_COMM_LEN )
),
@@ -222,7 +224,7 @@
__field( sector_t, sector )
__field( unsigned, nr_sector )
__field( int, error )
- __array( char, rwbs, 6 )
+ __array( char, rwbs, RWBS_LEN)
),
TP_fast_assign(
@@ -249,7 +251,7 @@
__field( dev_t, dev )
__field( sector_t, sector )
__field( unsigned int, nr_sector )
- __array( char, rwbs, 6 )
+ __array( char, rwbs, RWBS_LEN )
__array( char, comm, TASK_COMM_LEN )
),
@@ -321,7 +323,7 @@
__field( dev_t, dev )
__field( sector_t, sector )
__field( unsigned int, nr_sector )
- __array( char, rwbs, 6 )
+ __array( char, rwbs, RWBS_LEN )
__array( char, comm, TASK_COMM_LEN )
),
@@ -456,7 +458,7 @@
__field( dev_t, dev )
__field( sector_t, sector )
__field( sector_t, new_sector )
- __array( char, rwbs, 6 )
+ __array( char, rwbs, RWBS_LEN )
__array( char, comm, TASK_COMM_LEN )
),
@@ -498,7 +500,7 @@
__field( unsigned int, nr_sector )
__field( dev_t, old_dev )
__field( sector_t, old_sector )
- __array( char, rwbs, 6 )
+ __array( char, rwbs, RWBS_LEN)
),
TP_fast_assign(
@@ -542,7 +544,7 @@
__field( unsigned int, nr_sector )
__field( dev_t, old_dev )
__field( sector_t, old_sector )
- __array( char, rwbs, 6 )
+ __array( char, rwbs, RWBS_LEN)
),
TP_fast_assign(
diff --git a/kernel/irq/generic-chip.c b/kernel/irq/generic-chip.c
index 3a2cab4..e38544d 100644
--- a/kernel/irq/generic-chip.c
+++ b/kernel/irq/generic-chip.c
@@ -246,7 +246,7 @@
gc->mask_cache = irq_reg_readl(gc->reg_base + ct->regs.mask);
for (i = gc->irq_base; msk; msk >>= 1, i++) {
- if (!msk & 0x01)
+ if (!(msk & 0x01))
continue;
if (flags & IRQ_GC_INIT_NESTED_LOCK)
@@ -301,7 +301,7 @@
raw_spin_unlock(&gc_lock);
for (; msk; msk >>= 1, i++) {
- if (!msk & 0x01)
+ if (!(msk & 0x01))
continue;
/* Remove handler first. That will mask the irq line */
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 4c60a50..039b889 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -70,7 +70,8 @@
static inline int desc_node(struct irq_desc *desc) { return 0; }
#endif
-static void desc_set_defaults(unsigned int irq, struct irq_desc *desc, int node)
+static void desc_set_defaults(unsigned int irq, struct irq_desc *desc, int node,
+ struct module *owner)
{
int cpu;
@@ -86,6 +87,7 @@
desc->irq_count = 0;
desc->irqs_unhandled = 0;
desc->name = NULL;
+ desc->owner = owner;
for_each_possible_cpu(cpu)
*per_cpu_ptr(desc->kstat_irqs, cpu) = 0;
desc_smp_init(desc, node);
@@ -128,7 +130,7 @@
static inline void free_masks(struct irq_desc *desc) { }
#endif
-static struct irq_desc *alloc_desc(int irq, int node)
+static struct irq_desc *alloc_desc(int irq, int node, struct module *owner)
{
struct irq_desc *desc;
gfp_t gfp = GFP_KERNEL;
@@ -147,7 +149,7 @@
raw_spin_lock_init(&desc->lock);
lockdep_set_class(&desc->lock, &irq_desc_lock_class);
- desc_set_defaults(irq, desc, node);
+ desc_set_defaults(irq, desc, node, owner);
return desc;
@@ -173,13 +175,14 @@
kfree(desc);
}
-static int alloc_descs(unsigned int start, unsigned int cnt, int node)
+static int alloc_descs(unsigned int start, unsigned int cnt, int node,
+ struct module *owner)
{
struct irq_desc *desc;
int i;
for (i = 0; i < cnt; i++) {
- desc = alloc_desc(start + i, node);
+ desc = alloc_desc(start + i, node, owner);
if (!desc)
goto err;
mutex_lock(&sparse_irq_lock);
@@ -227,7 +230,7 @@
nr_irqs = initcnt;
for (i = 0; i < initcnt; i++) {
- desc = alloc_desc(i, node);
+ desc = alloc_desc(i, node, NULL);
set_bit(i, allocated_irqs);
irq_insert_desc(i, desc);
}
@@ -261,7 +264,7 @@
alloc_masks(&desc[i], GFP_KERNEL, node);
raw_spin_lock_init(&desc[i].lock);
lockdep_set_class(&desc[i].lock, &irq_desc_lock_class);
- desc_set_defaults(i, &desc[i], node);
+ desc_set_defaults(i, &desc[i], node, NULL);
}
return arch_early_irq_init();
}
@@ -276,8 +279,16 @@
dynamic_irq_cleanup(irq);
}
-static inline int alloc_descs(unsigned int start, unsigned int cnt, int node)
+static inline int alloc_descs(unsigned int start, unsigned int cnt, int node,
+ struct module *owner)
{
+ u32 i;
+
+ for (i = 0; i < cnt; i++) {
+ struct irq_desc *desc = irq_to_desc(start + i);
+
+ desc->owner = owner;
+ }
return start;
}
@@ -333,11 +344,13 @@
* @from: Start the search from this irq number
* @cnt: Number of consecutive irqs to allocate.
* @node: Preferred node on which the irq descriptor should be allocated
+ * @owner: Owning module (can be NULL)
*
* Returns the first irq number or error code
*/
int __ref
-irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node)
+__irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node,
+ struct module *owner)
{
int start, ret;
@@ -366,13 +379,13 @@
bitmap_set(allocated_irqs, start, cnt);
mutex_unlock(&sparse_irq_lock);
- return alloc_descs(start, cnt, node);
+ return alloc_descs(start, cnt, node, owner);
err:
mutex_unlock(&sparse_irq_lock);
return ret;
}
-EXPORT_SYMBOL_GPL(irq_alloc_descs);
+EXPORT_SYMBOL_GPL(__irq_alloc_descs);
/**
* irq_reserve_irqs - mark irqs allocated
@@ -440,7 +453,7 @@
unsigned long flags;
raw_spin_lock_irqsave(&desc->lock, flags);
- desc_set_defaults(irq, desc, desc_node(desc));
+ desc_set_defaults(irq, desc, desc_node(desc), NULL);
raw_spin_unlock_irqrestore(&desc->lock, flags);
}
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 0a7840ae..9b956fa 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -883,6 +883,8 @@
if (desc->irq_data.chip == &no_irq_chip)
return -ENOSYS;
+ if (!try_module_get(desc->owner))
+ return -ENODEV;
/*
* Some drivers like serial.c use request_irq() heavily,
* so we have to be careful not to interfere with a
@@ -906,8 +908,10 @@
*/
nested = irq_settings_is_nested_thread(desc);
if (nested) {
- if (!new->thread_fn)
- return -EINVAL;
+ if (!new->thread_fn) {
+ ret = -EINVAL;
+ goto out_mput;
+ }
/*
* Replace the primary handler which was provided from
* the driver for non nested interrupt handling by the
@@ -929,8 +933,10 @@
t = kthread_create(irq_thread, new, "irq/%d-%s", irq,
new->name);
- if (IS_ERR(t))
- return PTR_ERR(t);
+ if (IS_ERR(t)) {
+ ret = PTR_ERR(t);
+ goto out_mput;
+ }
/*
* We keep the reference to the task struct even if
* the thread dies to avoid that the interrupt code
@@ -1095,6 +1101,8 @@
kthread_stop(t);
put_task_struct(t);
}
+out_mput:
+ module_put(desc->owner);
return ret;
}
@@ -1203,6 +1211,7 @@
put_task_struct(action->thread);
}
+ module_put(desc->owner);
return action;
}
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 8c24294..91d67ce 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -3111,7 +3111,13 @@
if (!class)
class = look_up_lock_class(lock, 0);
- if (DEBUG_LOCKS_WARN_ON(!class))
+ /*
+ * If look_up_lock_class() failed to find a class, we're trying
+ * to test if we hold a lock that has never yet been acquired.
+ * Clearly if the lock hasn't been acquired _ever_, we're not
+ * holding it either, so report failure.
+ */
+ if (!class)
return 0;
if (DEBUG_LOCKS_WARN_ON(!hlock->nest_lock))
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index b1914cb9..3744c59 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -231,3 +231,7 @@
config PM_GENERIC_DOMAINS
bool
depends on PM
+
+config PM_GENERIC_DOMAINS_RUNTIME
+ def_bool y
+ depends on PM_RUNTIME && PM_GENERIC_DOMAINS
diff --git a/kernel/sys.c b/kernel/sys.c
index dd948a1..18ee1d2 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -37,6 +37,8 @@
#include <linux/fs_struct.h>
#include <linux/gfp.h>
#include <linux/syscore_ops.h>
+#include <linux/version.h>
+#include <linux/ctype.h>
#include <linux/compat.h>
#include <linux/syscalls.h>
@@ -44,6 +46,8 @@
#include <linux/user_namespace.h>
#include <linux/kmsg_dump.h>
+/* Move somewhere else to avoid recompiling? */
+#include <generated/utsrelease.h>
#include <asm/uaccess.h>
#include <asm/io.h>
@@ -1161,6 +1165,34 @@
#define override_architecture(name) 0
#endif
+/*
+ * Work around broken programs that cannot handle "Linux 3.0".
+ * Instead we map 3.x to 2.6.40+x, so e.g. 3.0 would be 2.6.40
+ */
+static int override_release(char __user *release, int len)
+{
+ int ret = 0;
+ char buf[len];
+
+ if (current->personality & UNAME26) {
+ char *rest = UTS_RELEASE;
+ int ndots = 0;
+ unsigned v;
+
+ while (*rest) {
+ if (*rest == '.' && ++ndots >= 3)
+ break;
+ if (!isdigit(*rest) && *rest != '.')
+ break;
+ rest++;
+ }
+ v = ((LINUX_VERSION_CODE >> 8) & 0xff) + 40;
+ snprintf(buf, len, "2.6.%u%s", v, rest);
+ ret = copy_to_user(release, buf, len);
+ }
+ return ret;
+}
+
SYSCALL_DEFINE1(newuname, struct new_utsname __user *, name)
{
int errno = 0;
@@ -1170,6 +1202,8 @@
errno = -EFAULT;
up_read(&uts_sem);
+ if (!errno && override_release(name->release, sizeof(name->release)))
+ errno = -EFAULT;
if (!errno && override_architecture(name))
errno = -EFAULT;
return errno;
@@ -1191,6 +1225,8 @@
error = -EFAULT;
up_read(&uts_sem);
+ if (!error && override_release(name->release, sizeof(name->release)))
+ error = -EFAULT;
if (!error && override_architecture(name))
error = -EFAULT;
return error;
@@ -1225,6 +1261,8 @@
if (!error && override_architecture(name))
error = -EFAULT;
+ if (!error && override_release(name->release, sizeof(name->release)))
+ error = -EFAULT;
return error ? -EFAULT : 0;
}
#endif
diff --git a/kernel/sysctl_binary.c b/kernel/sysctl_binary.c
index 3b8e028..e8bffbe 100644
--- a/kernel/sysctl_binary.c
+++ b/kernel/sysctl_binary.c
@@ -1,6 +1,6 @@
#include <linux/stat.h>
#include <linux/sysctl.h>
-#include "../fs/xfs/linux-2.6/xfs_sysctl.h"
+#include "../fs/xfs/xfs_sysctl.h"
#include <linux/sunrpc/debug.h>
#include <linux/string.h>
#include <net/ip_vs.h>
diff --git a/kernel/sysctl_check.c b/kernel/sysctl_check.c
index 4e4932a..362da65 100644
--- a/kernel/sysctl_check.c
+++ b/kernel/sysctl_check.c
@@ -1,6 +1,6 @@
#include <linux/stat.h>
#include <linux/sysctl.h>
-#include "../fs/xfs/linux-2.6/xfs_sysctl.h"
+#include "../fs/xfs/xfs_sysctl.h"
#include <linux/sunrpc/debug.h>
#include <linux/string.h>
#include <net/ip_vs.h>
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 6957aa2..7c910a5 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -206,6 +206,8 @@
what |= MASK_TC_BIT(rw, RAHEAD);
what |= MASK_TC_BIT(rw, META);
what |= MASK_TC_BIT(rw, DISCARD);
+ what |= MASK_TC_BIT(rw, FLUSH);
+ what |= MASK_TC_BIT(rw, FUA);
pid = tsk->pid;
if (act_log_check(bt, what, sector, pid))
@@ -1054,6 +1056,9 @@
goto out;
}
+ if (tc & BLK_TC_FLUSH)
+ rwbs[i++] = 'F';
+
if (tc & BLK_TC_DISCARD)
rwbs[i++] = 'D';
else if (tc & BLK_TC_WRITE)
@@ -1063,10 +1068,10 @@
else
rwbs[i++] = 'N';
+ if (tc & BLK_TC_FUA)
+ rwbs[i++] = 'F';
if (tc & BLK_TC_AHEAD)
rwbs[i++] = 'A';
- if (tc & BLK_TC_BARRIER)
- rwbs[i++] = 'B';
if (tc & BLK_TC_SYNC)
rwbs[i++] = 'S';
if (tc & BLK_TC_META)
@@ -1132,7 +1137,7 @@
static int blk_log_action_classic(struct trace_iterator *iter, const char *act)
{
- char rwbs[6];
+ char rwbs[RWBS_LEN];
unsigned long long ts = iter->ts;
unsigned long nsec_rem = do_div(ts, NSEC_PER_SEC);
unsigned secs = (unsigned long)ts;
@@ -1148,7 +1153,7 @@
static int blk_log_action(struct trace_iterator *iter, const char *act)
{
- char rwbs[6];
+ char rwbs[RWBS_LEN];
const struct blk_io_trace *t = te_blk_io_trace(iter->ent);
fill_rwbs(rwbs, t);
@@ -1561,7 +1566,7 @@
} mask_maps[] = {
{ BLK_TC_READ, "read" },
{ BLK_TC_WRITE, "write" },
- { BLK_TC_BARRIER, "barrier" },
+ { BLK_TC_FLUSH, "flush" },
{ BLK_TC_SYNC, "sync" },
{ BLK_TC_QUEUE, "queue" },
{ BLK_TC_REQUEUE, "requeue" },
@@ -1573,6 +1578,7 @@
{ BLK_TC_META, "meta" },
{ BLK_TC_DISCARD, "discard" },
{ BLK_TC_DRV_DATA, "drv_data" },
+ { BLK_TC_FUA, "fua" },
};
static int blk_trace_str2mask(const char *str)
@@ -1788,6 +1794,9 @@
{
int i = 0;
+ if (rw & REQ_FLUSH)
+ rwbs[i++] = 'F';
+
if (rw & WRITE)
rwbs[i++] = 'W';
else if (rw & REQ_DISCARD)
@@ -1797,6 +1806,8 @@
else
rwbs[i++] = 'N';
+ if (rw & REQ_FUA)
+ rwbs[i++] = 'F';
if (rw & REQ_RAHEAD)
rwbs[i++] = 'A';
if (rw & REQ_SYNC)
diff --git a/mm/highmem.c b/mm/highmem.c
index 693394d..5ef672c 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -326,7 +326,7 @@
spinlock_t lock; /* Protect this bucket's list */
} ____cacheline_aligned_in_smp page_address_htable[1<<PA_HASH_ORDER];
-static struct page_address_slot *page_slot(struct page *page)
+static struct page_address_slot *page_slot(const struct page *page)
{
return &page_address_htable[hash_ptr(page, PA_HASH_ORDER)];
}
@@ -337,7 +337,7 @@
*
* Returns the page's virtual address.
*/
-void *page_address(struct page *page)
+void *page_address(const struct page *page)
{
unsigned long flags;
void *ret;
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index 5f27f8e..f1f2f7b 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -167,6 +167,8 @@
if (unlikely(!skb))
goto err_free;
+ skb_reset_network_header(skb);
+ skb_reset_transport_header(skb);
return skb;
err_free:
diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index 52cfd0c..d07223c 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -558,12 +558,13 @@
spin_unlock_irqrestore(&rq->lock, flags);
skb_queue_walk_safe(&queue, skb, tmp) {
- struct net_device *dev = skb->dev;
+ struct net_device *dev;
+
+ br2684_push(atmvcc, skb);
+ dev = skb->dev;
dev->stats.rx_bytes -= skb->len;
dev->stats.rx_packets--;
-
- br2684_push(atmvcc, skb);
}
/* initialize netdev carrier state */
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 2cdf007..e738154 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -231,6 +231,7 @@
int br_add_bridge(struct net *net, const char *name)
{
struct net_device *dev;
+ int res;
dev = alloc_netdev(sizeof(struct net_bridge), name,
br_dev_setup);
@@ -240,7 +241,10 @@
dev_net_set(dev, net);
- return register_netdev(dev);
+ res = register_netdev(dev);
+ if (res)
+ free_netdev(dev);
+ return res;
}
int br_del_bridge(struct net *net, const char *name)
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 9cb191e..147ede38 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -913,7 +913,7 @@
}
static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
- char __user *optval, int __user *optlen)
+ char __user *optval, int __user *optlen, unsigned flags)
{
struct ipv6_pinfo *np = inet6_sk(sk);
int len;
@@ -962,7 +962,7 @@
msg.msg_control = optval;
msg.msg_controllen = len;
- msg.msg_flags = 0;
+ msg.msg_flags = flags;
lock_sock(sk);
skb = np->pktoptions;
@@ -1222,7 +1222,7 @@
if(level != SOL_IPV6)
return -ENOPROTOOPT;
- err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
+ err = do_ipv6_getsockopt(sk, level, optname, optval, optlen, 0);
#ifdef CONFIG_NETFILTER
/* we need to exclude all possible ENOPROTOOPTs except default case */
if (err == -ENOPROTOOPT && optname != IPV6_2292PKTOPTIONS) {
@@ -1264,7 +1264,8 @@
return compat_mc_getsockopt(sk, level, optname, optval, optlen,
ipv6_getsockopt);
- err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
+ err = do_ipv6_getsockopt(sk, level, optname, optval, optlen,
+ MSG_CMSG_COMPAT);
#ifdef CONFIG_NETFILTER
/* we need to exclude all possible ENOPROTOOPTs except default case */
if (err == -ENOPROTOOPT && optname != IPV6_2292PKTOPTIONS) {
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 07bf108..00b15ac 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -672,6 +672,9 @@
if (skb->protocol != htons(ETH_P_IPV6))
goto tx_error;
+ if (tos == 1)
+ tos = ipv6_get_dsfield(iph6);
+
/* ISATAP (RFC4214) - must come before 6to4 */
if (dev->priv_flags & IFF_ISATAP) {
struct neighbour *neigh = NULL;
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index 102fc21..e051398 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -196,8 +196,7 @@
skb2->skb_iif = skb->dev->ifindex;
skb2->dev = dev;
- dev_queue_xmit(skb2);
- err = 0;
+ err = dev_queue_xmit(skb2);
out:
if (err) {
diff --git a/sound/aoa/fabrics/layout.c b/sound/aoa/fabrics/layout.c
index 3fd1a7e..552b97a 100644
--- a/sound/aoa/fabrics/layout.c
+++ b/sound/aoa/fabrics/layout.c
@@ -1073,10 +1073,10 @@
sdev->pcmid = -1;
list_del(&ldev->list);
layouts_list_items--;
+ kfree(ldev);
outnodev:
of_node_put(sound);
layout_device = NULL;
- kfree(ldev);
return -ENODEV;
}
diff --git a/sound/pci/ac97/ac97_patch.c b/sound/pci/ac97/ac97_patch.c
index 200c9a1..a872d0a 100644
--- a/sound/pci/ac97/ac97_patch.c
+++ b/sound/pci/ac97/ac97_patch.c
@@ -1909,6 +1909,7 @@
0x103c0944, /* HP nc6220 */
0x103c0934, /* HP nc8220 */
0x103c006d, /* HP nx9105 */
+ 0x103c300d, /* HP Compaq dc5100 SFF(PT003AW) */
0x17340088, /* FSC Scenic-W */
0 /* end */
};
diff --git a/sound/pci/hda/alc268_quirks.c b/sound/pci/hda/alc268_quirks.c
index be58bf2..2e5876c 100644
--- a/sound/pci/hda/alc268_quirks.c
+++ b/sound/pci/hda/alc268_quirks.c
@@ -476,8 +476,8 @@
static const struct alc_config_preset alc268_presets[] = {
[ALC267_QUANTA_IL1] = {
- .mixers = { alc267_quanta_il1_mixer, alc268_beep_mixer,
- alc268_capture_nosrc_mixer },
+ .mixers = { alc267_quanta_il1_mixer, alc268_beep_mixer },
+ .cap_mixer = alc268_capture_nosrc_mixer,
.init_verbs = { alc268_base_init_verbs, alc268_eapd_verbs,
alc267_quanta_il1_verbs },
.num_dacs = ARRAY_SIZE(alc268_dac_nids),
@@ -492,8 +492,8 @@
.init_hook = alc_inithook,
},
[ALC268_3ST] = {
- .mixers = { alc268_base_mixer, alc268_capture_alt_mixer,
- alc268_beep_mixer },
+ .mixers = { alc268_base_mixer, alc268_beep_mixer },
+ .cap_mixer = alc268_capture_alt_mixer,
.init_verbs = { alc268_base_init_verbs },
.num_dacs = ARRAY_SIZE(alc268_dac_nids),
.dac_nids = alc268_dac_nids,
@@ -507,8 +507,8 @@
.input_mux = &alc268_capture_source,
},
[ALC268_TOSHIBA] = {
- .mixers = { alc268_toshiba_mixer, alc268_capture_alt_mixer,
- alc268_beep_mixer },
+ .mixers = { alc268_toshiba_mixer, alc268_beep_mixer },
+ .cap_mixer = alc268_capture_alt_mixer,
.init_verbs = { alc268_base_init_verbs, alc268_eapd_verbs,
alc268_toshiba_verbs },
.num_dacs = ARRAY_SIZE(alc268_dac_nids),
@@ -525,8 +525,8 @@
.init_hook = alc_inithook,
},
[ALC268_ACER] = {
- .mixers = { alc268_acer_mixer, alc268_capture_alt_mixer,
- alc268_beep_mixer },
+ .mixers = { alc268_acer_mixer, alc268_beep_mixer },
+ .cap_mixer = alc268_capture_alt_mixer,
.init_verbs = { alc268_base_init_verbs, alc268_eapd_verbs,
alc268_acer_verbs },
.num_dacs = ARRAY_SIZE(alc268_dac_nids),
@@ -543,8 +543,8 @@
.init_hook = alc_inithook,
},
[ALC268_ACER_DMIC] = {
- .mixers = { alc268_acer_dmic_mixer, alc268_capture_alt_mixer,
- alc268_beep_mixer },
+ .mixers = { alc268_acer_dmic_mixer, alc268_beep_mixer },
+ .cap_mixer = alc268_capture_alt_mixer,
.init_verbs = { alc268_base_init_verbs, alc268_eapd_verbs,
alc268_acer_verbs },
.num_dacs = ARRAY_SIZE(alc268_dac_nids),
@@ -561,9 +561,8 @@
.init_hook = alc_inithook,
},
[ALC268_ACER_ASPIRE_ONE] = {
- .mixers = { alc268_acer_aspire_one_mixer,
- alc268_beep_mixer,
- alc268_capture_nosrc_mixer },
+ .mixers = { alc268_acer_aspire_one_mixer, alc268_beep_mixer},
+ .cap_mixer = alc268_capture_nosrc_mixer,
.init_verbs = { alc268_base_init_verbs, alc268_eapd_verbs,
alc268_acer_aspire_one_verbs },
.num_dacs = ARRAY_SIZE(alc268_dac_nids),
@@ -579,8 +578,8 @@
.init_hook = alc_inithook,
},
[ALC268_DELL] = {
- .mixers = { alc268_dell_mixer, alc268_beep_mixer,
- alc268_capture_nosrc_mixer },
+ .mixers = { alc268_dell_mixer, alc268_beep_mixer},
+ .cap_mixer = alc268_capture_nosrc_mixer,
.init_verbs = { alc268_base_init_verbs, alc268_eapd_verbs,
alc268_dell_verbs },
.num_dacs = ARRAY_SIZE(alc268_dac_nids),
@@ -596,8 +595,8 @@
.init_hook = alc_inithook,
},
[ALC268_ZEPTO] = {
- .mixers = { alc268_base_mixer, alc268_capture_alt_mixer,
- alc268_beep_mixer },
+ .mixers = { alc268_base_mixer, alc268_beep_mixer },
+ .cap_mixer = alc268_capture_alt_mixer,
.init_verbs = { alc268_base_init_verbs, alc268_eapd_verbs,
alc268_toshiba_verbs },
.num_dacs = ARRAY_SIZE(alc268_dac_nids),
@@ -616,7 +615,8 @@
},
#ifdef CONFIG_SND_DEBUG
[ALC268_TEST] = {
- .mixers = { alc268_test_mixer, alc268_capture_mixer },
+ .mixers = { alc268_test_mixer },
+ .cap_mixer = alc268_capture_mixer,
.init_verbs = { alc268_base_init_verbs, alc268_eapd_verbs,
alc268_volume_init_verbs,
alc268_beep_init_verbs },
diff --git a/sound/pci/hda/hda_eld.c b/sound/pci/hda/hda_eld.c
index 28ce17d..c34f730 100644
--- a/sound/pci/hda/hda_eld.c
+++ b/sound/pci/hda/hda_eld.c
@@ -144,25 +144,17 @@
SNDRV_PCM_RATE_192000, /* 7: 192000Hz */
};
-static unsigned char hdmi_get_eld_byte(struct hda_codec *codec, hda_nid_t nid,
+static unsigned int hdmi_get_eld_data(struct hda_codec *codec, hda_nid_t nid,
int byte_index)
{
unsigned int val;
val = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_HDMI_ELDD, byte_index);
-
#ifdef BE_PARANOID
printk(KERN_INFO "HDMI: ELD data byte %d: 0x%x\n", byte_index, val);
#endif
-
- if ((val & AC_ELDD_ELD_VALID) == 0) {
- snd_printd(KERN_INFO "HDMI: invalid ELD data byte %d\n",
- byte_index);
- val = 0;
- }
-
- return val & AC_ELDD_ELD_DATA;
+ return val;
}
#define GRAB_BITS(buf, byte, lowbit, bits) \
@@ -344,11 +336,26 @@
if (!buf)
return -ENOMEM;
- for (i = 0; i < size; i++)
- buf[i] = hdmi_get_eld_byte(codec, nid, i);
+ for (i = 0; i < size; i++) {
+ unsigned int val = hdmi_get_eld_data(codec, nid, i);
+ if (!(val & AC_ELDD_ELD_VALID)) {
+ if (!i) {
+ snd_printd(KERN_INFO
+ "HDMI: invalid ELD data\n");
+ ret = -EINVAL;
+ goto error;
+ }
+ snd_printd(KERN_INFO
+ "HDMI: invalid ELD data byte %d\n", i);
+ val = 0;
+ } else
+ val &= AC_ELDD_ELD_DATA;
+ buf[i] = val;
+ }
ret = hdmi_update_eld(eld, buf, size);
+error:
kfree(buf);
return ret;
}
diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
index 47d6ffc..d6c93d9 100644
--- a/sound/pci/hda/patch_cirrus.c
+++ b/sound/pci/hda/patch_cirrus.c
@@ -375,7 +375,7 @@
static hda_nid_t get_adc(struct hda_codec *codec, hda_nid_t pin,
unsigned int *idxp)
{
- int i;
+ int i, idx;
hda_nid_t nid;
nid = codec->start_nid;
@@ -384,9 +384,11 @@
type = get_wcaps_type(get_wcaps(codec, nid));
if (type != AC_WID_AUD_IN)
continue;
- *idxp = snd_hda_get_conn_index(codec, nid, pin, false);
- if (*idxp >= 0)
+ idx = snd_hda_get_conn_index(codec, nid, pin, false);
+ if (idx >= 0) {
+ *idxp = idx;
return nid;
+ }
}
return 0;
}
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 9a1aa09..fcb11af 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -1784,6 +1784,7 @@
"Speaker Playback Volume",
"Mono Playback Volume",
"Line-Out Playback Volume",
+ "PCM Playback Volume",
NULL,
};
@@ -1798,6 +1799,7 @@
"Mono Playback Switch",
"IEC958 Playback Switch",
"Line-Out Playback Switch",
+ "PCM Playback Switch",
NULL,
};
diff --git a/sound/usb/caiaq/audio.c b/sound/usb/caiaq/audio.c
index aa52b3e..2cf87f5 100644
--- a/sound/usb/caiaq/audio.c
+++ b/sound/usb/caiaq/audio.c
@@ -139,8 +139,12 @@
for (i = 0; i < N_URBS; i++) {
usb_kill_urb(dev->data_urbs_in[i]);
- usb_kill_urb(dev->data_urbs_out[i]);
+
+ if (test_bit(i, &dev->outurb_active_mask))
+ usb_kill_urb(dev->data_urbs_out[i]);
}
+
+ dev->outurb_active_mask = 0;
}
static int snd_usb_caiaq_substream_open(struct snd_pcm_substream *substream)
@@ -612,8 +616,8 @@
{
struct snd_usb_caiaq_cb_info *info = urb->context;
struct snd_usb_caiaqdev *dev;
- struct urb *out;
- int frame, len, send_it = 0, outframe = 0;
+ struct urb *out = NULL;
+ int i, frame, len, send_it = 0, outframe = 0;
size_t offset = 0;
if (urb->status || !info)
@@ -624,7 +628,17 @@
if (!dev->streaming)
return;
- out = dev->data_urbs_out[info->index];
+ /* find an unused output urb that is unused */
+ for (i = 0; i < N_URBS; i++)
+ if (test_and_set_bit(i, &dev->outurb_active_mask) == 0) {
+ out = dev->data_urbs_out[i];
+ break;
+ }
+
+ if (!out) {
+ log("Unable to find an output urb to use\n");
+ goto requeue;
+ }
/* read the recently received packet and send back one which has
* the same layout */
@@ -655,8 +669,12 @@
out->number_of_packets = outframe;
out->transfer_flags = URB_ISO_ASAP;
usb_submit_urb(out, GFP_ATOMIC);
+ } else {
+ struct snd_usb_caiaq_cb_info *oinfo = out->context;
+ clear_bit(oinfo->index, &dev->outurb_active_mask);
}
+requeue:
/* re-submit inbound urb */
for (frame = 0; frame < FRAMES_PER_URB; frame++) {
urb->iso_frame_desc[frame].offset = BYTES_PER_FRAME * frame;
@@ -678,6 +696,8 @@
dev->output_running = 1;
wake_up(&dev->prepare_wait_queue);
}
+
+ clear_bit(info->index, &dev->outurb_active_mask);
}
static struct urb **alloc_urbs(struct snd_usb_caiaqdev *dev, int dir, int *ret)
@@ -829,6 +849,9 @@
if (!dev->data_cb_info)
return -ENOMEM;
+ dev->outurb_active_mask = 0;
+ BUILD_BUG_ON(N_URBS > (sizeof(dev->outurb_active_mask) * 8));
+
for (i = 0; i < N_URBS; i++) {
dev->data_cb_info[i].dev = dev;
dev->data_cb_info[i].index = i;
diff --git a/sound/usb/caiaq/device.h b/sound/usb/caiaq/device.h
index b2b3101..3f9c633 100644
--- a/sound/usb/caiaq/device.h
+++ b/sound/usb/caiaq/device.h
@@ -96,6 +96,7 @@
int input_panic, output_panic, warned;
char *audio_in_buf, *audio_out_buf;
unsigned int samplerates, bpp;
+ unsigned long outurb_active_mask;
struct snd_pcm_substream *sub_playback[MAX_STREAMS];
struct snd_pcm_substream *sub_capture[MAX_STREAMS];
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index c04d7c7..cdd19d7 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -152,6 +152,7 @@
if (p && p->dB) {
cval->dBmin = p->dB->min;
cval->dBmax = p->dB->max;
+ cval->initialized = 1;
}
}
@@ -1092,7 +1093,7 @@
" Switch" : " Volume");
if (control == UAC_FU_VOLUME) {
check_mapped_dB(map, cval);
- if (cval->dBmin < cval->dBmax) {
+ if (cval->dBmin < cval->dBmax || !cval->initialized) {
kctl->tlv.c = mixer_vol_tlv;
kctl->vd[0].access |=
SNDRV_CTL_ELEM_ACCESS_TLV_READ |
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index 5f2a5c7..710ae3d 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -134,10 +134,18 @@
{
int ret = 0;
- if (str)
- ret = parse_line_range_desc(str, ¶ms.line_range);
- INIT_LIST_HEAD(¶ms.line_range.line_list);
+ if (!str)
+ return 0;
+
+ if (params.show_lines) {
+ pr_warning("Warning: more than one --line options are"
+ " detected. Only the first one is valid.\n");
+ return 0;
+ }
+
params.show_lines = true;
+ ret = parse_line_range_desc(str, ¶ms.line_range);
+ INIT_LIST_HEAD(¶ms.line_range.line_list);
return ret;
}
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index f6426b4..6b0519f 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -45,7 +45,7 @@
static int output;
static int pipe_output = 0;
static const char *output_name = NULL;
-static int group = 0;
+static bool group = false;
static int realtime_prio = 0;
static bool nodelay = false;
static bool raw_samples = false;
@@ -753,6 +753,8 @@
"child tasks do not inherit counters"),
OPT_UINTEGER('F', "freq", &user_freq, "profile at this frequency"),
OPT_UINTEGER('m', "mmap-pages", &mmap_pages, "number of mmap data pages"),
+ OPT_BOOLEAN(0, "group", &group,
+ "put the counters into a counter group"),
OPT_BOOLEAN('g', "call-graph", &call_graph,
"do call-graph (stack chain/backtrace) recording"),
OPT_INCR('v', "verbose", &verbose,
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 1ad04ce..5deb17d 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -193,6 +193,7 @@
static const char *cpu_list;
static const char *csv_sep = NULL;
static bool csv_output = false;
+static bool group = false;
static volatile int done = 0;
@@ -280,14 +281,14 @@
attr->inherit = !no_inherit;
if (system_wide)
- return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, false);
+ return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, group);
if (target_pid == -1 && target_tid == -1) {
attr->disabled = 1;
attr->enable_on_exec = 1;
}
- return perf_evsel__open_per_thread(evsel, evsel_list->threads, false);
+ return perf_evsel__open_per_thread(evsel, evsel_list->threads, group);
}
/*
@@ -1043,6 +1044,8 @@
"stat events on existing thread id"),
OPT_BOOLEAN('a', "all-cpus", &system_wide,
"system-wide collection from all CPUs"),
+ OPT_BOOLEAN('g', "group", &group,
+ "put the counters into a counter group"),
OPT_BOOLEAN('c', "scale", &scale,
"scale/normalize counters"),
OPT_INCR('v', "verbose", &verbose,
diff --git a/tools/perf/util/dwarf-aux.c b/tools/perf/util/dwarf-aux.c
index fddf40f..ee51e9b 100644
--- a/tools/perf/util/dwarf-aux.c
+++ b/tools/perf/util/dwarf-aux.c
@@ -96,6 +96,39 @@
return *lineno ?: -ENOENT;
}
+static int __die_find_inline_cb(Dwarf_Die *die_mem, void *data);
+
+/**
+ * cu_walk_functions_at - Walk on function DIEs at given address
+ * @cu_die: A CU DIE
+ * @addr: An address
+ * @callback: A callback which called with found DIEs
+ * @data: A user data
+ *
+ * Walk on function DIEs at given @addr in @cu_die. Passed DIEs
+ * should be subprogram or inlined-subroutines.
+ */
+int cu_walk_functions_at(Dwarf_Die *cu_die, Dwarf_Addr addr,
+ int (*callback)(Dwarf_Die *, void *), void *data)
+{
+ Dwarf_Die die_mem;
+ Dwarf_Die *sc_die;
+ int ret = -ENOENT;
+
+ /* Inlined function could be recursive. Trace it until fail */
+ for (sc_die = die_find_realfunc(cu_die, addr, &die_mem);
+ sc_die != NULL;
+ sc_die = die_find_child(sc_die, __die_find_inline_cb, &addr,
+ &die_mem)) {
+ ret = callback(sc_die, data);
+ if (ret)
+ break;
+ }
+
+ return ret;
+
+}
+
/**
* die_compare_name - Compare diename and tname
* @dw_die: a DIE
@@ -198,6 +231,19 @@
return 0;
}
+/* Get attribute and translate it as a sdata */
+static int die_get_attr_sdata(Dwarf_Die *tp_die, unsigned int attr_name,
+ Dwarf_Sword *result)
+{
+ Dwarf_Attribute attr;
+
+ if (dwarf_attr(tp_die, attr_name, &attr) == NULL ||
+ dwarf_formsdata(&attr, result) != 0)
+ return -ENOENT;
+
+ return 0;
+}
+
/**
* die_is_signed_type - Check whether a type DIE is signed or not
* @tp_die: a DIE of a type
@@ -250,6 +296,50 @@
return 0;
}
+/* Get the call file index number in CU DIE */
+static int die_get_call_fileno(Dwarf_Die *in_die)
+{
+ Dwarf_Sword idx;
+
+ if (die_get_attr_sdata(in_die, DW_AT_call_file, &idx) == 0)
+ return (int)idx;
+ else
+ return -ENOENT;
+}
+
+/* Get the declared file index number in CU DIE */
+static int die_get_decl_fileno(Dwarf_Die *pdie)
+{
+ Dwarf_Sword idx;
+
+ if (die_get_attr_sdata(pdie, DW_AT_decl_file, &idx) == 0)
+ return (int)idx;
+ else
+ return -ENOENT;
+}
+
+/**
+ * die_get_call_file - Get callsite file name of inlined function instance
+ * @in_die: a DIE of an inlined function instance
+ *
+ * Get call-site file name of @in_die. This means from which file the inline
+ * function is called.
+ */
+const char *die_get_call_file(Dwarf_Die *in_die)
+{
+ Dwarf_Die cu_die;
+ Dwarf_Files *files;
+ int idx;
+
+ idx = die_get_call_fileno(in_die);
+ if (idx < 0 || !dwarf_diecu(in_die, &cu_die, NULL, NULL) ||
+ dwarf_getsrcfiles(&cu_die, &files, NULL) != 0)
+ return NULL;
+
+ return dwarf_filesrc(files, idx, NULL, NULL);
+}
+
+
/**
* die_find_child - Generic DIE search function in DIE tree
* @rt_die: a root DIE
@@ -374,9 +464,78 @@
return die_mem;
}
+struct __instance_walk_param {
+ void *addr;
+ int (*callback)(Dwarf_Die *, void *);
+ void *data;
+ int retval;
+};
+
+static int __die_walk_instances_cb(Dwarf_Die *inst, void *data)
+{
+ struct __instance_walk_param *iwp = data;
+ Dwarf_Attribute attr_mem;
+ Dwarf_Die origin_mem;
+ Dwarf_Attribute *attr;
+ Dwarf_Die *origin;
+ int tmp;
+
+ attr = dwarf_attr(inst, DW_AT_abstract_origin, &attr_mem);
+ if (attr == NULL)
+ return DIE_FIND_CB_CONTINUE;
+
+ origin = dwarf_formref_die(attr, &origin_mem);
+ if (origin == NULL || origin->addr != iwp->addr)
+ return DIE_FIND_CB_CONTINUE;
+
+ /* Ignore redundant instances */
+ if (dwarf_tag(inst) == DW_TAG_inlined_subroutine) {
+ dwarf_decl_line(origin, &tmp);
+ if (die_get_call_lineno(inst) == tmp) {
+ tmp = die_get_decl_fileno(origin);
+ if (die_get_call_fileno(inst) == tmp)
+ return DIE_FIND_CB_CONTINUE;
+ }
+ }
+
+ iwp->retval = iwp->callback(inst, iwp->data);
+
+ return (iwp->retval) ? DIE_FIND_CB_END : DIE_FIND_CB_CONTINUE;
+}
+
+/**
+ * die_walk_instances - Walk on instances of given DIE
+ * @or_die: an abstract original DIE
+ * @callback: a callback function which is called with instance DIE
+ * @data: user data
+ *
+ * Walk on the instances of give @in_die. @in_die must be an inlined function
+ * declartion. This returns the return value of @callback if it returns
+ * non-zero value, or -ENOENT if there is no instance.
+ */
+int die_walk_instances(Dwarf_Die *or_die, int (*callback)(Dwarf_Die *, void *),
+ void *data)
+{
+ Dwarf_Die cu_die;
+ Dwarf_Die die_mem;
+ struct __instance_walk_param iwp = {
+ .addr = or_die->addr,
+ .callback = callback,
+ .data = data,
+ .retval = -ENOENT,
+ };
+
+ if (dwarf_diecu(or_die, &cu_die, NULL, NULL) == NULL)
+ return -ENOENT;
+
+ die_find_child(&cu_die, __die_walk_instances_cb, &iwp, &die_mem);
+
+ return iwp.retval;
+}
+
/* Line walker internal parameters */
struct __line_walk_param {
- const char *fname;
+ bool recursive;
line_walk_callback_t callback;
void *data;
int retval;
@@ -385,39 +544,56 @@
static int __die_walk_funclines_cb(Dwarf_Die *in_die, void *data)
{
struct __line_walk_param *lw = data;
- Dwarf_Addr addr;
+ Dwarf_Addr addr = 0;
+ const char *fname;
int lineno;
if (dwarf_tag(in_die) == DW_TAG_inlined_subroutine) {
+ fname = die_get_call_file(in_die);
lineno = die_get_call_lineno(in_die);
- if (lineno > 0 && dwarf_entrypc(in_die, &addr) == 0) {
- lw->retval = lw->callback(lw->fname, lineno, addr,
- lw->data);
+ if (fname && lineno > 0 && dwarf_entrypc(in_die, &addr) == 0) {
+ lw->retval = lw->callback(fname, lineno, addr, lw->data);
if (lw->retval != 0)
return DIE_FIND_CB_END;
}
}
- return DIE_FIND_CB_SIBLING;
+ if (!lw->recursive)
+ /* Don't need to search recursively */
+ return DIE_FIND_CB_SIBLING;
+
+ if (addr) {
+ fname = dwarf_decl_file(in_die);
+ if (fname && dwarf_decl_line(in_die, &lineno) == 0) {
+ lw->retval = lw->callback(fname, lineno, addr, lw->data);
+ if (lw->retval != 0)
+ return DIE_FIND_CB_END;
+ }
+ }
+
+ /* Continue to search nested inlined function call-sites */
+ return DIE_FIND_CB_CONTINUE;
}
/* Walk on lines of blocks included in given DIE */
-static int __die_walk_funclines(Dwarf_Die *sp_die,
+static int __die_walk_funclines(Dwarf_Die *sp_die, bool recursive,
line_walk_callback_t callback, void *data)
{
struct __line_walk_param lw = {
+ .recursive = recursive,
.callback = callback,
.data = data,
.retval = 0,
};
Dwarf_Die die_mem;
Dwarf_Addr addr;
+ const char *fname;
int lineno;
/* Handle function declaration line */
- lw.fname = dwarf_decl_file(sp_die);
- if (lw.fname && dwarf_decl_line(sp_die, &lineno) == 0 &&
+ fname = dwarf_decl_file(sp_die);
+ if (fname && dwarf_decl_line(sp_die, &lineno) == 0 &&
dwarf_entrypc(sp_die, &addr) == 0) {
- lw.retval = callback(lw.fname, lineno, addr, data);
+ lw.retval = callback(fname, lineno, addr, data);
if (lw.retval != 0)
goto done;
}
@@ -430,7 +606,7 @@
{
struct __line_walk_param *lw = data;
- lw->retval = __die_walk_funclines(sp_die, lw->callback, lw->data);
+ lw->retval = __die_walk_funclines(sp_die, true, lw->callback, lw->data);
if (lw->retval != 0)
return DWARF_CB_ABORT;
@@ -439,7 +615,7 @@
/**
* die_walk_lines - Walk on lines inside given DIE
- * @rt_die: a root DIE (CU or subprogram)
+ * @rt_die: a root DIE (CU, subprogram or inlined_subroutine)
* @callback: callback routine
* @data: user data
*
@@ -460,12 +636,12 @@
size_t nlines, i;
/* Get the CU die */
- if (dwarf_tag(rt_die) == DW_TAG_subprogram)
+ if (dwarf_tag(rt_die) != DW_TAG_compile_unit)
cu_die = dwarf_diecu(rt_die, &die_mem, NULL, NULL);
else
cu_die = rt_die;
if (!cu_die) {
- pr_debug2("Failed to get CU from subprogram\n");
+ pr_debug2("Failed to get CU from given DIE.\n");
return -EINVAL;
}
@@ -509,7 +685,11 @@
* subroutines. We have to check functions list or given function.
*/
if (rt_die != cu_die)
- ret = __die_walk_funclines(rt_die, callback, data);
+ /*
+ * Don't need walk functions recursively, because nested
+ * inlined functions don't have lines of the specified DIE.
+ */
+ ret = __die_walk_funclines(rt_die, false, callback, data);
else {
struct __line_walk_param param = {
.callback = callback,
diff --git a/tools/perf/util/dwarf-aux.h b/tools/perf/util/dwarf-aux.h
index bc3b211..6ce1717 100644
--- a/tools/perf/util/dwarf-aux.h
+++ b/tools/perf/util/dwarf-aux.h
@@ -34,12 +34,19 @@
extern int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr,
const char **fname, int *lineno);
+/* Walk on funcitons at given address */
+extern int cu_walk_functions_at(Dwarf_Die *cu_die, Dwarf_Addr addr,
+ int (*callback)(Dwarf_Die *, void *), void *data);
+
/* Compare diename and tname */
extern bool die_compare_name(Dwarf_Die *dw_die, const char *tname);
/* Get callsite line number of inline-function instance */
extern int die_get_call_lineno(Dwarf_Die *in_die);
+/* Get callsite file name of inlined function instance */
+extern const char *die_get_call_file(Dwarf_Die *in_die);
+
/* Get type die */
extern Dwarf_Die *die_get_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem);
@@ -73,6 +80,10 @@
extern Dwarf_Die *die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr,
Dwarf_Die *die_mem);
+/* Walk on the instances of given DIE */
+extern int die_walk_instances(Dwarf_Die *in_die,
+ int (*callback)(Dwarf_Die *, void *), void *data);
+
/* Walker on lines (Note: line number will not be sorted) */
typedef int (* line_walk_callback_t) (const char *fname, int lineno,
Dwarf_Addr addr, void *data);
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index e03e7bc..c12bd47 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -85,10 +85,19 @@
struct perf_evsel *evsel = perf_evsel__new(&attr, 0);
if (evsel == NULL)
- return -ENOMEM;
+ goto error;
+
+ /* use strdup() because free(evsel) assumes name is allocated */
+ evsel->name = strdup("cycles");
+ if (!evsel->name)
+ goto error_free;
perf_evlist__add(evlist, evsel);
return 0;
+error_free:
+ perf_evsel__delete(evsel);
+error:
+ return -ENOMEM;
}
void perf_evlist__disable(struct perf_evlist *evlist)
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index d4f3101..b6c1ad1 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -726,7 +726,16 @@
return -1;
bev.header = old_bev.header;
- bev.pid = 0;
+
+ /*
+ * As the pid is the missing value, we need to fill
+ * it properly. The header.misc value give us nice hint.
+ */
+ bev.pid = HOST_KERNEL_ID;
+ if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER ||
+ bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL)
+ bev.pid = DEFAULT_GUEST_KERNEL_ID;
+
memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id));
__event_process_build_id(&bev, filename, session);
diff --git a/tools/perf/util/include/linux/compiler.h b/tools/perf/util/include/linux/compiler.h
index 791f9dd..547628e 100644
--- a/tools/perf/util/include/linux/compiler.h
+++ b/tools/perf/util/include/linux/compiler.h
@@ -5,7 +5,9 @@
#define __always_inline inline
#endif
#define __user
+#ifndef __attribute_const__
#define __attribute_const__
+#endif
#define __used __attribute__((__unused__))
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 4ea7e19..928918b 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -697,7 +697,11 @@
return EVT_FAILED;
n = hex2u64(str + 1, &config);
if (n > 0) {
- *strp = str + n + 1;
+ const char *end = str + n + 1;
+ if (*end != '\0' && *end != ',' && *end != ':')
+ return EVT_FAILED;
+
+ *strp = end;
attr->type = PERF_TYPE_RAW;
attr->config = config;
return EVT_HANDLED;
@@ -1097,6 +1101,4 @@
printf("\n");
print_tracepoint_events(NULL, NULL);
-
- exit(129);
}
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 3e44a3e..555fc38 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -612,12 +612,12 @@
return ret;
}
-/* Find a variable in a subprogram die */
-static int find_variable(Dwarf_Die *sp_die, struct probe_finder *pf)
+/* Find a variable in a scope DIE */
+static int find_variable(Dwarf_Die *sc_die, struct probe_finder *pf)
{
- Dwarf_Die vr_die, *scopes;
+ Dwarf_Die vr_die;
char buf[32], *ptr;
- int ret, nscopes;
+ int ret = 0;
if (!is_c_varname(pf->pvar->var)) {
/* Copy raw parameters */
@@ -652,30 +652,16 @@
if (pf->tvar->name == NULL)
return -ENOMEM;
- pr_debug("Searching '%s' variable in context.\n",
- pf->pvar->var);
+ pr_debug("Searching '%s' variable in context.\n", pf->pvar->var);
/* Search child die for local variables and parameters. */
- if (die_find_variable_at(sp_die, pf->pvar->var, pf->addr, &vr_die))
- ret = convert_variable(&vr_die, pf);
- else {
- /* Search upper class */
- nscopes = dwarf_getscopes_die(sp_die, &scopes);
- while (nscopes-- > 1) {
- pr_debug("Searching variables in %s\n",
- dwarf_diename(&scopes[nscopes]));
- /* We should check this scope, so give dummy address */
- if (die_find_variable_at(&scopes[nscopes],
- pf->pvar->var, 0,
- &vr_die)) {
- ret = convert_variable(&vr_die, pf);
- goto found;
- }
- }
- if (scopes)
- free(scopes);
- ret = -ENOENT;
+ if (!die_find_variable_at(sc_die, pf->pvar->var, pf->addr, &vr_die)) {
+ /* Search again in global variables */
+ if (!die_find_variable_at(&pf->cu_die, pf->pvar->var, 0, &vr_die))
+ ret = -ENOENT;
}
-found:
+ if (ret == 0)
+ ret = convert_variable(&vr_die, pf);
+
if (ret < 0)
pr_warning("Failed to find '%s' in this function.\n",
pf->pvar->var);
@@ -718,26 +704,30 @@
return 0;
}
-/* Call probe_finder callback with real subprogram DIE */
-static int call_probe_finder(Dwarf_Die *sp_die, struct probe_finder *pf)
+/* Call probe_finder callback with scope DIE */
+static int call_probe_finder(Dwarf_Die *sc_die, struct probe_finder *pf)
{
- Dwarf_Die die_mem;
Dwarf_Attribute fb_attr;
size_t nops;
int ret;
- /* If no real subprogram, find a real one */
- if (!sp_die || dwarf_tag(sp_die) != DW_TAG_subprogram) {
- sp_die = die_find_realfunc(&pf->cu_die, pf->addr, &die_mem);
- if (!sp_die) {
+ if (!sc_die) {
+ pr_err("Caller must pass a scope DIE. Program error.\n");
+ return -EINVAL;
+ }
+
+ /* If not a real subprogram, find a real one */
+ if (dwarf_tag(sc_die) != DW_TAG_subprogram) {
+ if (!die_find_realfunc(&pf->cu_die, pf->addr, &pf->sp_die)) {
pr_warning("Failed to find probe point in any "
"functions.\n");
return -ENOENT;
}
- }
+ } else
+ memcpy(&pf->sp_die, sc_die, sizeof(Dwarf_Die));
- /* Get the frame base attribute/ops */
- dwarf_attr(sp_die, DW_AT_frame_base, &fb_attr);
+ /* Get the frame base attribute/ops from subprogram */
+ dwarf_attr(&pf->sp_die, DW_AT_frame_base, &fb_attr);
ret = dwarf_getlocation_addr(&fb_attr, pf->addr, &pf->fb_ops, &nops, 1);
if (ret <= 0 || nops == 0) {
pf->fb_ops = NULL;
@@ -755,7 +745,7 @@
}
/* Call finder's callback handler */
- ret = pf->callback(sp_die, pf);
+ ret = pf->callback(sc_die, pf);
/* *pf->fb_ops will be cached in libdw. Don't free it. */
pf->fb_ops = NULL;
@@ -763,17 +753,82 @@
return ret;
}
+struct find_scope_param {
+ const char *function;
+ const char *file;
+ int line;
+ int diff;
+ Dwarf_Die *die_mem;
+ bool found;
+};
+
+static int find_best_scope_cb(Dwarf_Die *fn_die, void *data)
+{
+ struct find_scope_param *fsp = data;
+ const char *file;
+ int lno;
+
+ /* Skip if declared file name does not match */
+ if (fsp->file) {
+ file = dwarf_decl_file(fn_die);
+ if (!file || strcmp(fsp->file, file) != 0)
+ return 0;
+ }
+ /* If the function name is given, that's what user expects */
+ if (fsp->function) {
+ if (die_compare_name(fn_die, fsp->function)) {
+ memcpy(fsp->die_mem, fn_die, sizeof(Dwarf_Die));
+ fsp->found = true;
+ return 1;
+ }
+ } else {
+ /* With the line number, find the nearest declared DIE */
+ dwarf_decl_line(fn_die, &lno);
+ if (lno < fsp->line && fsp->diff > fsp->line - lno) {
+ /* Keep a candidate and continue */
+ fsp->diff = fsp->line - lno;
+ memcpy(fsp->die_mem, fn_die, sizeof(Dwarf_Die));
+ fsp->found = true;
+ }
+ }
+ return 0;
+}
+
+/* Find an appropriate scope fits to given conditions */
+static Dwarf_Die *find_best_scope(struct probe_finder *pf, Dwarf_Die *die_mem)
+{
+ struct find_scope_param fsp = {
+ .function = pf->pev->point.function,
+ .file = pf->fname,
+ .line = pf->lno,
+ .diff = INT_MAX,
+ .die_mem = die_mem,
+ .found = false,
+ };
+
+ cu_walk_functions_at(&pf->cu_die, pf->addr, find_best_scope_cb, &fsp);
+
+ return fsp.found ? die_mem : NULL;
+}
+
static int probe_point_line_walker(const char *fname, int lineno,
Dwarf_Addr addr, void *data)
{
struct probe_finder *pf = data;
+ Dwarf_Die *sc_die, die_mem;
int ret;
if (lineno != pf->lno || strtailcmp(fname, pf->fname) != 0)
return 0;
pf->addr = addr;
- ret = call_probe_finder(NULL, pf);
+ sc_die = find_best_scope(pf, &die_mem);
+ if (!sc_die) {
+ pr_warning("Failed to find scope of probe point.\n");
+ return -ENOENT;
+ }
+
+ ret = call_probe_finder(sc_die, pf);
/* Continue if no error, because the line will be in inline function */
return ret < 0 ? ret : 0;
@@ -827,6 +882,7 @@
Dwarf_Addr addr, void *data)
{
struct probe_finder *pf = data;
+ Dwarf_Die *sc_die, die_mem;
int ret;
if (!line_list__has_line(&pf->lcache, lineno) ||
@@ -836,7 +892,14 @@
pr_debug("Probe line found: line:%d addr:0x%llx\n",
lineno, (unsigned long long)addr);
pf->addr = addr;
- ret = call_probe_finder(NULL, pf);
+ pf->lno = lineno;
+ sc_die = find_best_scope(pf, &die_mem);
+ if (!sc_die) {
+ pr_warning("Failed to find scope of probe point.\n");
+ return -ENOENT;
+ }
+
+ ret = call_probe_finder(sc_die, pf);
/*
* Continue if no error, because the lazy pattern will match
@@ -861,42 +924,39 @@
return die_walk_lines(sp_die, probe_point_lazy_walker, pf);
}
-/* Callback parameter with return value */
-struct dwarf_callback_param {
- void *data;
- int retval;
-};
-
static int probe_point_inline_cb(Dwarf_Die *in_die, void *data)
{
- struct dwarf_callback_param *param = data;
- struct probe_finder *pf = param->data;
+ struct probe_finder *pf = data;
struct perf_probe_point *pp = &pf->pev->point;
Dwarf_Addr addr;
+ int ret;
if (pp->lazy_line)
- param->retval = find_probe_point_lazy(in_die, pf);
+ ret = find_probe_point_lazy(in_die, pf);
else {
/* Get probe address */
if (dwarf_entrypc(in_die, &addr) != 0) {
pr_warning("Failed to get entry address of %s.\n",
dwarf_diename(in_die));
- param->retval = -ENOENT;
- return DWARF_CB_ABORT;
+ return -ENOENT;
}
pf->addr = addr;
pf->addr += pp->offset;
pr_debug("found inline addr: 0x%jx\n",
(uintmax_t)pf->addr);
- param->retval = call_probe_finder(in_die, pf);
- if (param->retval < 0)
- return DWARF_CB_ABORT;
+ ret = call_probe_finder(in_die, pf);
}
- return DWARF_CB_OK;
+ return ret;
}
+/* Callback parameter with return value for libdw */
+struct dwarf_callback_param {
+ void *data;
+ int retval;
+};
+
/* Search function from function name */
static int probe_point_search_cb(Dwarf_Die *sp_die, void *data)
{
@@ -933,14 +993,10 @@
/* TODO: Check the address in this function */
param->retval = call_probe_finder(sp_die, pf);
}
- } else {
- struct dwarf_callback_param _param = {.data = (void *)pf,
- .retval = 0};
+ } else
/* Inlined function: search instances */
- dwarf_func_inline_instances(sp_die, probe_point_inline_cb,
- &_param);
- param->retval = _param.retval;
- }
+ param->retval = die_walk_instances(sp_die,
+ probe_point_inline_cb, (void *)pf);
return DWARF_CB_ABORT; /* Exit; no same symbol in this CU. */
}
@@ -1060,7 +1116,7 @@
}
/* Add a found probe point into trace event list */
-static int add_probe_trace_event(Dwarf_Die *sp_die, struct probe_finder *pf)
+static int add_probe_trace_event(Dwarf_Die *sc_die, struct probe_finder *pf)
{
struct trace_event_finder *tf =
container_of(pf, struct trace_event_finder, pf);
@@ -1075,8 +1131,9 @@
}
tev = &tf->tevs[tf->ntevs++];
- ret = convert_to_trace_point(sp_die, pf->addr, pf->pev->point.retprobe,
- &tev->point);
+ /* Trace point should be converted from subprogram DIE */
+ ret = convert_to_trace_point(&pf->sp_die, pf->addr,
+ pf->pev->point.retprobe, &tev->point);
if (ret < 0)
return ret;
@@ -1091,7 +1148,8 @@
for (i = 0; i < pf->pev->nargs; i++) {
pf->pvar = &pf->pev->args[i];
pf->tvar = &tev->args[i];
- ret = find_variable(sp_die, pf);
+ /* Variable should be found from scope DIE */
+ ret = find_variable(sc_die, pf);
if (ret != 0)
return ret;
}
@@ -1159,13 +1217,13 @@
}
/* Add a found vars into available variables list */
-static int add_available_vars(Dwarf_Die *sp_die, struct probe_finder *pf)
+static int add_available_vars(Dwarf_Die *sc_die, struct probe_finder *pf)
{
struct available_var_finder *af =
container_of(pf, struct available_var_finder, pf);
struct variable_list *vl;
- Dwarf_Die die_mem, *scopes = NULL;
- int ret, nscopes;
+ Dwarf_Die die_mem;
+ int ret;
/* Check number of tevs */
if (af->nvls == af->max_vls) {
@@ -1174,8 +1232,9 @@
}
vl = &af->vls[af->nvls++];
- ret = convert_to_trace_point(sp_die, pf->addr, pf->pev->point.retprobe,
- &vl->point);
+ /* Trace point should be converted from subprogram DIE */
+ ret = convert_to_trace_point(&pf->sp_die, pf->addr,
+ pf->pev->point.retprobe, &vl->point);
if (ret < 0)
return ret;
@@ -1187,19 +1246,14 @@
if (vl->vars == NULL)
return -ENOMEM;
af->child = true;
- die_find_child(sp_die, collect_variables_cb, (void *)af, &die_mem);
+ die_find_child(sc_die, collect_variables_cb, (void *)af, &die_mem);
/* Find external variables */
if (!af->externs)
goto out;
/* Don't need to search child DIE for externs. */
af->child = false;
- nscopes = dwarf_getscopes_die(sp_die, &scopes);
- while (nscopes-- > 1)
- die_find_child(&scopes[nscopes], collect_variables_cb,
- (void *)af, &die_mem);
- if (scopes)
- free(scopes);
+ die_find_child(&pf->cu_die, collect_variables_cb, (void *)af, &die_mem);
out:
if (strlist__empty(vl->vars)) {
@@ -1391,10 +1445,14 @@
static int line_range_inline_cb(Dwarf_Die *in_die, void *data)
{
- struct dwarf_callback_param *param = data;
+ find_line_range_by_line(in_die, data);
- param->retval = find_line_range_by_line(in_die, param->data);
- return DWARF_CB_ABORT; /* No need to find other instances */
+ /*
+ * We have to check all instances of inlined function, because
+ * some execution paths can be optimized out depends on the
+ * function argument of instances
+ */
+ return 0;
}
/* Search function from function name */
@@ -1422,15 +1480,10 @@
pr_debug("New line range: %d to %d\n", lf->lno_s, lf->lno_e);
lr->start = lf->lno_s;
lr->end = lf->lno_e;
- if (dwarf_func_inline(sp_die)) {
- struct dwarf_callback_param _param;
- _param.data = (void *)lf;
- _param.retval = 0;
- dwarf_func_inline_instances(sp_die,
- line_range_inline_cb,
- &_param);
- param->retval = _param.retval;
- } else
+ if (dwarf_func_inline(sp_die))
+ param->retval = die_walk_instances(sp_die,
+ line_range_inline_cb, lf);
+ else
param->retval = find_line_range_by_line(sp_die, lf);
return DWARF_CB_ABORT;
}
diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h
index c478b42..1132c8f 100644
--- a/tools/perf/util/probe-finder.h
+++ b/tools/perf/util/probe-finder.h
@@ -57,7 +57,7 @@
struct perf_probe_event *pev; /* Target probe event */
/* Callback when a probe point is found */
- int (*callback)(Dwarf_Die *sp_die, struct probe_finder *pf);
+ int (*callback)(Dwarf_Die *sc_die, struct probe_finder *pf);
/* For function searching */
int lno; /* Line number */
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index a8b5371..469c026 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1506,7 +1506,7 @@
if (strncmp(dso->name, "/tmp/perf-", 10) == 0) {
struct stat st;
- if (stat(dso->name, &st) < 0)
+ if (lstat(dso->name, &st) < 0)
return -1;
if (st.st_uid && (st.st_uid != geteuid())) {
@@ -2181,27 +2181,22 @@
return ret;
}
-struct dso *dso__new_kernel(const char *name)
+static struct dso*
+dso__kernel_findnew(struct machine *machine, const char *name,
+ const char *short_name, int dso_type)
{
- struct dso *dso = dso__new(name ?: "[kernel.kallsyms]");
+ /*
+ * The kernel dso could be created by build_id processing.
+ */
+ struct dso *dso = __dsos__findnew(&machine->kernel_dsos, name);
+ /*
+ * We need to run this in all cases, since during the build_id
+ * processing we had no idea this was the kernel dso.
+ */
if (dso != NULL) {
- dso__set_short_name(dso, "[kernel]");
- dso->kernel = DSO_TYPE_KERNEL;
- }
-
- return dso;
-}
-
-static struct dso *dso__new_guest_kernel(struct machine *machine,
- const char *name)
-{
- char bf[PATH_MAX];
- struct dso *dso = dso__new(name ?: machine__mmap_name(machine, bf,
- sizeof(bf)));
- if (dso != NULL) {
- dso__set_short_name(dso, "[guest.kernel]");
- dso->kernel = DSO_TYPE_GUEST_KERNEL;
+ dso__set_short_name(dso, short_name);
+ dso->kernel = dso_type;
}
return dso;
@@ -2219,24 +2214,36 @@
dso->has_build_id = true;
}
-static struct dso *machine__create_kernel(struct machine *machine)
+static struct dso *machine__get_kernel(struct machine *machine)
{
const char *vmlinux_name = NULL;
struct dso *kernel;
if (machine__is_host(machine)) {
vmlinux_name = symbol_conf.vmlinux_name;
- kernel = dso__new_kernel(vmlinux_name);
+ if (!vmlinux_name)
+ vmlinux_name = "[kernel.kallsyms]";
+
+ kernel = dso__kernel_findnew(machine, vmlinux_name,
+ "[kernel]",
+ DSO_TYPE_KERNEL);
} else {
+ char bf[PATH_MAX];
+
if (machine__is_default_guest(machine))
vmlinux_name = symbol_conf.default_guest_vmlinux_name;
- kernel = dso__new_guest_kernel(machine, vmlinux_name);
+ if (!vmlinux_name)
+ vmlinux_name = machine__mmap_name(machine, bf,
+ sizeof(bf));
+
+ kernel = dso__kernel_findnew(machine, vmlinux_name,
+ "[guest.kernel]",
+ DSO_TYPE_GUEST_KERNEL);
}
- if (kernel != NULL) {
+ if (kernel != NULL && (!kernel->has_build_id))
dso__read_running_kernel_build_id(kernel, machine);
- dsos__add(&machine->kernel_dsos, kernel);
- }
+
return kernel;
}
@@ -2340,7 +2347,7 @@
int machine__create_kernel_maps(struct machine *machine)
{
- struct dso *kernel = machine__create_kernel(machine);
+ struct dso *kernel = machine__get_kernel(machine);
if (kernel == NULL ||
__machine__create_kernel_maps(machine, kernel) < 0)
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 325ee36..4f377d9 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -155,7 +155,6 @@
};
struct dso *dso__new(const char *name);
-struct dso *dso__new_kernel(const char *name);
void dso__delete(struct dso *dso);
int dso__name_len(const struct dso *dso);
diff --git a/tools/perf/util/ui/browsers/top.c b/tools/perf/util/ui/browsers/top.c
index 5a06538..88403cf 100644
--- a/tools/perf/util/ui/browsers/top.c
+++ b/tools/perf/util/ui/browsers/top.c
@@ -208,6 +208,5 @@
},
};
- ui_helpline__push("Press <- or ESC to exit");
return perf_top_browser__run(&browser);
}