Merge branch 'tty-fixes'
* branch 'tty-fixes':
tty: use the new 'flush_delayed_work()' helper to do ldisc flush
workqueue: add 'flush_delayed_work()' to run and wait for delayed work
Make flush_to_ldisc properly handle parallel calls
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 89a47b5..04e6c81 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -451,3 +451,33 @@
will also allow making ALSA OSS emulation independent of
sound_core. The dependency will be broken then too.
Who: Tejun Heo <tj@kernel.org>
+
+----------------------------
+
+What: Support for VMware's guest paravirtuliazation technique [VMI] will be
+ dropped.
+When: 2.6.37 or earlier.
+Why: With the recent innovations in CPU hardware acceleration technologies
+ from Intel and AMD, VMware ran a few experiments to compare these
+ techniques to guest paravirtualization technique on VMware's platform.
+ These hardware assisted virtualization techniques have outperformed the
+ performance benefits provided by VMI in most of the workloads. VMware
+ expects that these hardware features will be ubiquitous in a couple of
+ years, as a result, VMware has started a phased retirement of this
+ feature from the hypervisor. We will be removing this feature from the
+ Kernel too. Right now we are targeting 2.6.37 but can retire earlier if
+ technical reasons (read opportunity to remove major chunk of pvops)
+ arise.
+
+ Please note that VMI has always been an optimization and non-VMI kernels
+ still work fine on VMware's platform.
+ Latest versions of VMware's product which support VMI are,
+ Workstation 7.0 and VSphere 4.0 on ESX side, future maintainence
+ releases for these products will continue supporting VMI.
+
+ For more details about VMI retirement take a look at this,
+ http://blogs.vmware.com/guestosguide/2009/09/vmi-retirement.html
+
+Who: Alok N Kataria <akataria@vmware.com>
+
+----------------------------
diff --git a/MAINTAINERS b/MAINTAINERS
index ff96884..6b05777 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4076,6 +4076,13 @@
M: Paul Mackerras <paulus@samba.org>
M: Ingo Molnar <mingo@elte.hu>
S: Supported
+F: kernel/perf_event.c
+F: include/linux/perf_event.h
+F: arch/*/*/kernel/perf_event.c
+F: arch/*/include/asm/perf_event.h
+F: arch/*/lib/perf_event.c
+F: arch/*/kernel/perf_callchain.c
+F: tools/perf/
PERSONALITY HANDLING
M: Christoph Hellwig <hch@infradead.org>
diff --git a/arch/s390/hypfs/hypfs_diag.c b/arch/s390/hypfs/hypfs_diag.c
index 704dd39..77df726 100644
--- a/arch/s390/hypfs/hypfs_diag.c
+++ b/arch/s390/hypfs/hypfs_diag.c
@@ -438,7 +438,7 @@
}
if (diag204((unsigned long)SUBC_STIB6 |
(unsigned long)INFO_EXT, pages, buf) >= 0) {
- diag204_store_sc = SUBC_STIB7;
+ diag204_store_sc = SUBC_STIB6;
diag204_info_type = INFO_EXT;
goto out;
}
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
index 802c8ab..0729f36 100644
--- a/arch/s390/kernel/processor.c
+++ b/arch/s390/kernel/processor.c
@@ -31,9 +31,9 @@
static int show_cpuinfo(struct seq_file *m, void *v)
{
- static const char *hwcap_str[9] = {
+ static const char *hwcap_str[10] = {
"esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp",
- "edat", "etf3eh"
+ "edat", "etf3eh", "highgprs"
};
struct _lowcore *lc;
unsigned long n = (unsigned long) v - 1;
@@ -48,7 +48,7 @@
num_online_cpus(), loops_per_jiffy/(500000/HZ),
(loops_per_jiffy/(5000/HZ))%100);
seq_puts(m, "features\t: ");
- for (i = 0; i < 9; i++)
+ for (i = 0; i < 10; i++)
if (hwcap_str[i] && (elf_hwcap & (1UL << i)))
seq_printf(m, "%s ", hwcap_str[i]);
seq_puts(m, "\n");
diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S
index 68d9223..3eb8493 100644
--- a/arch/sh/kernel/entry-common.S
+++ b/arch/sh/kernel/entry-common.S
@@ -121,7 +121,7 @@
ENTRY(resume_userspace)
! r8: current_thread_info
cli
- TRACE_IRQS_OfF
+ TRACE_IRQS_OFF
mov.l @(TI_FLAGS,r8), r0 ! current_thread_info->flags
tst #(_TIF_WORK_MASK & 0xff), r0
bt/s __restore_all
diff --git a/arch/sh/kernel/ftrace.c b/arch/sh/kernel/ftrace.c
index a3dcc6d..2c48e26 100644
--- a/arch/sh/kernel/ftrace.c
+++ b/arch/sh/kernel/ftrace.c
@@ -291,31 +291,48 @@
return syscalls_metadata[nr];
}
-void arch_init_ftrace_syscalls(void)
+int syscall_name_to_nr(char *name)
+{
+ int i;
+
+ if (!syscalls_metadata)
+ return -1;
+ for (i = 0; i < NR_syscalls; i++)
+ if (syscalls_metadata[i])
+ if (!strcmp(syscalls_metadata[i]->name, name))
+ return i;
+ return -1;
+}
+
+void set_syscall_enter_id(int num, int id)
+{
+ syscalls_metadata[num]->enter_id = id;
+}
+
+void set_syscall_exit_id(int num, int id)
+{
+ syscalls_metadata[num]->exit_id = id;
+}
+
+static int __init arch_init_ftrace_syscalls(void)
{
int i;
struct syscall_metadata *meta;
unsigned long **psys_syscall_table = &sys_call_table;
- static atomic_t refs;
-
- if (atomic_inc_return(&refs) != 1)
- goto end;
syscalls_metadata = kzalloc(sizeof(*syscalls_metadata) *
FTRACE_SYSCALL_MAX, GFP_KERNEL);
if (!syscalls_metadata) {
WARN_ON(1);
- return;
+ return -ENOMEM;
}
for (i = 0; i < FTRACE_SYSCALL_MAX; i++) {
meta = find_syscall_meta(psys_syscall_table[i]);
syscalls_metadata[i] = meta;
}
- return;
- /* Paranoid: avoid overflow */
-end:
- atomic_dec(&refs);
+ return 0;
}
+arch_initcall(arch_init_ftrace_syscalls);
#endif /* CONFIG_FTRACE_SYSCALLS */
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index f9d44f8..99b4fb5 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -549,6 +549,8 @@
if (cpu == 0)
seq_printf(m, "machine\t\t: %s\n", get_system_type());
+ else
+ seq_printf(m, "\n");
seq_printf(m, "processor\t: %d\n", cpu);
seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine);
diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c
index 6729703..3db3742 100644
--- a/arch/sh/kernel/signal_32.c
+++ b/arch/sh/kernel/signal_32.c
@@ -145,7 +145,7 @@
{
struct task_struct *tsk = current;
- if (!(current_cpu_data.flags & CPU_HAS_FPU))
+ if (!(boot_cpu_data.flags & CPU_HAS_FPU))
return 0;
set_used_math();
@@ -158,7 +158,7 @@
{
struct task_struct *tsk = current;
- if (!(current_cpu_data.flags & CPU_HAS_FPU))
+ if (!(boot_cpu_data.flags & CPU_HAS_FPU))
return 0;
if (!used_math()) {
@@ -199,7 +199,7 @@
#undef COPY
#ifdef CONFIG_SH_FPU
- if (current_cpu_data.flags & CPU_HAS_FPU) {
+ if (boot_cpu_data.flags & CPU_HAS_FPU) {
int owned_fp;
struct task_struct *tsk = current;
@@ -472,6 +472,7 @@
err |= __put_user(OR_R0_R0, &frame->retcode[6]);
err |= __put_user((__NR_rt_sigreturn), &frame->retcode[7]);
regs->pr = (unsigned long) frame->retcode;
+ flush_icache_range(regs->pr, regs->pr + sizeof(frame->retcode));
}
if (err)
@@ -497,8 +498,6 @@
pr_debug("SIG deliver (%s:%d): sp=%p pc=%08lx pr=%08lx\n",
current->comm, task_pid_nr(current), frame, regs->pc, regs->pr);
- flush_icache_range(regs->pr, regs->pr + sizeof(frame->retcode));
-
return 0;
give_sigsegv:
diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c
index 442d8d4..160db10 100644
--- a/arch/sh/kernel/smp.c
+++ b/arch/sh/kernel/smp.c
@@ -35,6 +35,8 @@
{
struct sh_cpuinfo *c = cpu_data + cpu;
+ memcpy(c, &boot_cpu_data, sizeof(struct sh_cpuinfo));
+
c->loops_per_jiffy = loops_per_jiffy;
}
diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c
index e0b5e4b..7a2ee3a 100644
--- a/arch/sh/kernel/traps_32.c
+++ b/arch/sh/kernel/traps_32.c
@@ -25,6 +25,7 @@
#include <linux/kexec.h>
#include <linux/limits.h>
#include <linux/proc_fs.h>
+#include <linux/sysfs.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/fpu.h>
@@ -159,12 +160,12 @@
oops_enter();
- console_verbose();
spin_lock_irq(&die_lock);
+ console_verbose();
bust_spinlocks(1);
printk("%s: %04lx [#%d]\n", str, err & 0xffff, ++die_counter);
-
+ sysfs_printk_last_file();
print_modules();
show_regs(regs);
@@ -180,6 +181,7 @@
bust_spinlocks(0);
add_taint(TAINT_DIE);
spin_unlock_irq(&die_lock);
+ oops_exit();
if (kexec_should_crash(current))
crash_kexec(regs);
@@ -190,7 +192,6 @@
if (panic_on_oops)
panic("Fatal exception");
- oops_exit();
do_exit(SIGSEGV);
}
diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c
index 35c37b7..5e1091b 100644
--- a/arch/sh/mm/cache.c
+++ b/arch/sh/mm/cache.c
@@ -128,7 +128,7 @@
return;
page = pfn_to_page(pfn);
- if (pfn_valid(pfn) && page_mapping(page)) {
+ if (pfn_valid(pfn)) {
int dirty = test_and_clear_bit(PG_dcache_dirty, &page->flags);
if (dirty) {
unsigned long addr = (unsigned long)page_address(page);
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c
index adf5f27..cb3c72c 100644
--- a/arch/sparc/kernel/ldc.c
+++ b/arch/sparc/kernel/ldc.c
@@ -1242,13 +1242,13 @@
snprintf(lp->tx_irq_name, LDC_IRQ_NAME_MAX, "%s TX", name);
err = request_irq(lp->cfg.rx_irq, ldc_rx,
- IRQF_SAMPLE_RANDOM | IRQF_SHARED,
+ IRQF_SAMPLE_RANDOM | IRQF_DISABLED | IRQF_SHARED,
lp->rx_irq_name, lp);
if (err)
return err;
err = request_irq(lp->cfg.tx_irq, ldc_tx,
- IRQF_SAMPLE_RANDOM | IRQF_SHARED,
+ IRQF_SAMPLE_RANDOM | IRQF_DISABLED | IRQF_SHARED,
lp->tx_irq_name, lp);
if (err) {
free_irq(lp->cfg.rx_irq, lp);
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index 04db927..fa5936e 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -437,7 +437,7 @@
.lower_shift = 6,
.event_mask = 0xfff,
.hv_bit = 0x8,
- .irq_bit = 0x03,
+ .irq_bit = 0x30,
.upper_nop = 0x220,
.lower_nop = 0x220,
};
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index a70a5e1..1886d37 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -265,7 +265,7 @@
struct page *page;
page = pfn_to_page(pfn);
- if (page && page_mapping(page)) {
+ if (page) {
unsigned long pg_flags;
pg_flags = page->flags;
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index c876bac..07e01149 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -491,7 +491,7 @@
source "arch/x86/xen/Kconfig"
config VMI
- bool "VMI Guest support"
+ bool "VMI Guest support (DEPRECATED)"
select PARAVIRT
depends on X86_32
---help---
@@ -500,6 +500,15 @@
at the moment), by linking the kernel to a GPL-ed ROM module
provided by the hypervisor.
+ As of September 2009, VMware has started a phased retirement
+ of this feature from VMware's products. Please see
+ feature-removal-schedule.txt for details. If you are
+ planning to enable this option, please note that you cannot
+ live migrate a VMI enabled VM to a future VMware product,
+ which doesn't support VMI. So if you expect your kernel to
+ seamlessly migrate to newer VMware products, keep this
+ disabled.
+
config KVM_CLOCK
bool "KVM paravirtualized clock"
select PARAVIRT
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h
index 8aebcc4..efb3899 100644
--- a/arch/x86/include/asm/paravirt.h
+++ b/arch/x86/include/asm/paravirt.h
@@ -840,42 +840,22 @@
static inline unsigned long __raw_local_save_flags(void)
{
- unsigned long f;
-
- asm volatile(paravirt_alt(PARAVIRT_CALL)
- : "=a"(f)
- : paravirt_type(pv_irq_ops.save_fl),
- paravirt_clobber(CLBR_EAX)
- : "memory", "cc");
- return f;
+ return PVOP_CALLEE0(unsigned long, pv_irq_ops.save_fl);
}
static inline void raw_local_irq_restore(unsigned long f)
{
- asm volatile(paravirt_alt(PARAVIRT_CALL)
- : "=a"(f)
- : PV_FLAGS_ARG(f),
- paravirt_type(pv_irq_ops.restore_fl),
- paravirt_clobber(CLBR_EAX)
- : "memory", "cc");
+ PVOP_VCALLEE1(pv_irq_ops.restore_fl, f);
}
static inline void raw_local_irq_disable(void)
{
- asm volatile(paravirt_alt(PARAVIRT_CALL)
- :
- : paravirt_type(pv_irq_ops.irq_disable),
- paravirt_clobber(CLBR_EAX)
- : "memory", "eax", "cc");
+ PVOP_VCALLEE0(pv_irq_ops.irq_disable);
}
static inline void raw_local_irq_enable(void)
{
- asm volatile(paravirt_alt(PARAVIRT_CALL)
- :
- : paravirt_type(pv_irq_ops.irq_enable),
- paravirt_clobber(CLBR_EAX)
- : "memory", "eax", "cc");
+ PVOP_VCALLEE0(pv_irq_ops.irq_enable);
}
static inline unsigned long __raw_local_irq_save(void)
diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h
index dd0f5b3..9357473 100644
--- a/arch/x86/include/asm/paravirt_types.h
+++ b/arch/x86/include/asm/paravirt_types.h
@@ -494,10 +494,11 @@
#define EXTRA_CLOBBERS
#define VEXTRA_CLOBBERS
#else /* CONFIG_X86_64 */
+/* [re]ax isn't an arg, but the return val */
#define PVOP_VCALL_ARGS \
unsigned long __edi = __edi, __esi = __esi, \
- __edx = __edx, __ecx = __ecx
-#define PVOP_CALL_ARGS PVOP_VCALL_ARGS, __eax
+ __edx = __edx, __ecx = __ecx, __eax = __eax
+#define PVOP_CALL_ARGS PVOP_VCALL_ARGS
#define PVOP_CALL_ARG1(x) "D" ((unsigned long)(x))
#define PVOP_CALL_ARG2(x) "S" ((unsigned long)(x))
@@ -509,6 +510,7 @@
"=c" (__ecx)
#define PVOP_CALL_CLOBBERS PVOP_VCALL_CLOBBERS, "=a" (__eax)
+/* void functions are still allowed [re]ax for scratch */
#define PVOP_VCALLEE_CLOBBERS "=a" (__eax)
#define PVOP_CALLEE_CLOBBERS PVOP_VCALLEE_CLOBBERS
@@ -583,8 +585,8 @@
VEXTRA_CLOBBERS, \
pre, post, ##__VA_ARGS__)
-#define __PVOP_VCALLEESAVE(rettype, op, pre, post, ...) \
- ____PVOP_CALL(rettype, op.func, CLBR_RET_REG, \
+#define __PVOP_VCALLEESAVE(op, pre, post, ...) \
+ ____PVOP_VCALL(op.func, CLBR_RET_REG, \
PVOP_VCALLEE_CLOBBERS, , \
pre, post, ##__VA_ARGS__)
diff --git a/arch/x86/kernel/acpi/realmode/wakeup.lds.S b/arch/x86/kernel/acpi/realmode/wakeup.lds.S
index 7da00b7..0e50e1e 100644
--- a/arch/x86/kernel/acpi/realmode/wakeup.lds.S
+++ b/arch/x86/kernel/acpi/realmode/wakeup.lds.S
@@ -56,6 +56,6 @@
/DISCARD/ : {
*(.note*)
}
-
- . = ASSERT(_end <= WAKEUP_SIZE, "Wakeup too big!");
}
+
+ASSERT(_end <= WAKEUP_SIZE, "Wakeup too big!");
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 3912061..74656d1 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -244,7 +244,6 @@
__func__, smp_processor_id(), vector, irq);
}
- run_local_timers();
irq_exit();
set_irq_regs(old_regs);
@@ -269,7 +268,6 @@
if (generic_interrupt_extension)
generic_interrupt_extension();
- run_local_timers();
irq_exit();
set_irq_regs(old_regs);
diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c
index d915d95..ec1de97 100644
--- a/arch/x86/kernel/smp.c
+++ b/arch/x86/kernel/smp.c
@@ -198,7 +198,6 @@
{
ack_APIC_irq();
inc_irq_stat(irq_resched_count);
- run_local_timers();
/*
* KVM uses this interrupt to force a cpu out of guest mode
*/
diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c
index dcb00d2..be25734 100644
--- a/arch/x86/kernel/time.c
+++ b/arch/x86/kernel/time.c
@@ -38,7 +38,8 @@
#ifdef CONFIG_FRAME_POINTER
return *(unsigned long *)(regs->bp + sizeof(long));
#else
- unsigned long *sp = (unsigned long *)regs->sp;
+ unsigned long *sp =
+ (unsigned long *)kernel_stack_pointer(regs);
/*
* Return address is either directly at stack pointer
* or above a saved flags. Eflags has bits 22-31 zero,
diff --git a/arch/x86/kernel/trampoline.c b/arch/x86/kernel/trampoline.c
index 699f7ee..cd02212 100644
--- a/arch/x86/kernel/trampoline.c
+++ b/arch/x86/kernel/trampoline.c
@@ -3,8 +3,16 @@
#include <asm/trampoline.h>
#include <asm/e820.h>
+#if defined(CONFIG_X86_64) && defined(CONFIG_ACPI_SLEEP)
+#define __trampinit
+#define __trampinitdata
+#else
+#define __trampinit __cpuinit
+#define __trampinitdata __cpuinitdata
+#endif
+
/* ready for x86_64 and x86 */
-unsigned char *__cpuinitdata trampoline_base = __va(TRAMPOLINE_BASE);
+unsigned char *__trampinitdata trampoline_base = __va(TRAMPOLINE_BASE);
void __init reserve_trampoline_memory(void)
{
@@ -26,7 +34,7 @@
* bootstrap into the page concerned. The caller
* has made sure it's suitably aligned.
*/
-unsigned long __cpuinit setup_trampoline(void)
+unsigned long __trampinit setup_trampoline(void)
{
memcpy(trampoline_base, trampoline_data, TRAMPOLINE_SIZE);
return virt_to_phys(trampoline_base);
diff --git a/arch/x86/kernel/trampoline_64.S b/arch/x86/kernel/trampoline_64.S
index 596d54c..3af2dff 100644
--- a/arch/x86/kernel/trampoline_64.S
+++ b/arch/x86/kernel/trampoline_64.S
@@ -32,8 +32,12 @@
#include <asm/segment.h>
#include <asm/processor-flags.h>
+#ifdef CONFIG_ACPI_SLEEP
+.section .rodata, "a", @progbits
+#else
/* We can free up the trampoline after bootup if cpu hotplug is not supported. */
__CPUINITRODATA
+#endif
.code16
ENTRY(trampoline_data)
diff --git a/arch/x86/kernel/vmi_32.c b/arch/x86/kernel/vmi_32.c
index 31e6f6c..d430e4c 100644
--- a/arch/x86/kernel/vmi_32.c
+++ b/arch/x86/kernel/vmi_32.c
@@ -648,7 +648,7 @@
pv_info.paravirt_enabled = 1;
pv_info.kernel_rpl = kernel_cs & SEGMENT_RPL_MASK;
- pv_info.name = "vmi";
+ pv_info.name = "vmi [deprecated]";
pv_init_ops.patch = vmi_patch;
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 92929fb..8d6001a 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -305,8 +305,8 @@
#ifdef CONFIG_X86_32
-. = ASSERT((_end - LOAD_OFFSET <= KERNEL_IMAGE_SIZE),
- "kernel image bigger than KERNEL_IMAGE_SIZE");
+ASSERT((_end - LOAD_OFFSET <= KERNEL_IMAGE_SIZE),
+ "kernel image bigger than KERNEL_IMAGE_SIZE");
#else
/*
* Per-cpu symbols which need to be offset from __per_cpu_load
@@ -319,12 +319,12 @@
/*
* Build-time check on the image size:
*/
-. = ASSERT((_end - _text <= KERNEL_IMAGE_SIZE),
- "kernel image bigger than KERNEL_IMAGE_SIZE");
+ASSERT((_end - _text <= KERNEL_IMAGE_SIZE),
+ "kernel image bigger than KERNEL_IMAGE_SIZE");
#ifdef CONFIG_SMP
-. = ASSERT((per_cpu__irq_stack_union == 0),
- "irq_stack_union is not at start of per-cpu area");
+ASSERT((per_cpu__irq_stack_union == 0),
+ "irq_stack_union is not at start of per-cpu area");
#endif
#endif /* CONFIG_X86_32 */
@@ -332,7 +332,6 @@
#ifdef CONFIG_KEXEC
#include <asm/kexec.h>
-. = ASSERT(kexec_control_code_size <= KEXEC_CONTROL_CODE_MAX_SIZE,
- "kexec control code size is too big");
+ASSERT(kexec_control_code_size <= KEXEC_CONTROL_CODE_MAX_SIZE,
+ "kexec control code size is too big");
#endif
-
diff --git a/drivers/oprofile/event_buffer.c b/drivers/oprofile/event_buffer.c
index 2b7ae36..5df60a6 100644
--- a/drivers/oprofile/event_buffer.c
+++ b/drivers/oprofile/event_buffer.c
@@ -35,12 +35,23 @@
/* atomic_t because wait_event checks it outside of buffer_mutex */
static atomic_t buffer_ready = ATOMIC_INIT(0);
-/* Add an entry to the event buffer. When we
- * get near to the end we wake up the process
- * sleeping on the read() of the file.
+/*
+ * Add an entry to the event buffer. When we get near to the end we
+ * wake up the process sleeping on the read() of the file. To protect
+ * the event_buffer this function may only be called when buffer_mutex
+ * is set.
*/
void add_event_entry(unsigned long value)
{
+ /*
+ * This shouldn't happen since all workqueues or handlers are
+ * canceled or flushed before the event buffer is freed.
+ */
+ if (!event_buffer) {
+ WARN_ON_ONCE(1);
+ return;
+ }
+
if (buffer_pos == buffer_size) {
atomic_inc(&oprofile_stats.event_lost_overflow);
return;
@@ -69,7 +80,6 @@
int alloc_event_buffer(void)
{
- int err = -ENOMEM;
unsigned long flags;
spin_lock_irqsave(&oprofilefs_lock, flags);
@@ -80,21 +90,22 @@
if (buffer_watershed >= buffer_size)
return -EINVAL;
+ buffer_pos = 0;
event_buffer = vmalloc(sizeof(unsigned long) * buffer_size);
if (!event_buffer)
- goto out;
+ return -ENOMEM;
- err = 0;
-out:
- return err;
+ return 0;
}
void free_event_buffer(void)
{
+ mutex_lock(&buffer_mutex);
vfree(event_buffer);
-
+ buffer_pos = 0;
event_buffer = NULL;
+ mutex_unlock(&buffer_mutex);
}
@@ -167,6 +178,12 @@
mutex_lock(&buffer_mutex);
+ /* May happen if the buffer is freed during pending reads. */
+ if (!event_buffer) {
+ retval = -EINTR;
+ goto out;
+ }
+
atomic_set(&buffer_ready, 0);
retval = -EFAULT;
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 53b8c25..aaccc8e 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -2533,6 +2533,7 @@
{
struct dasd_ccw_req *cqr;
struct ccw1 *ccw;
+ unsigned long *idaw;
cqr = dasd_smalloc_request(magic, 1 /* RDC */, rdc_buffer_size, device);
@@ -2546,9 +2547,17 @@
ccw = cqr->cpaddr;
ccw->cmd_code = CCW_CMD_RDC;
- ccw->cda = (__u32)(addr_t)rdc_buffer;
- ccw->count = rdc_buffer_size;
+ if (idal_is_needed(rdc_buffer, rdc_buffer_size)) {
+ idaw = (unsigned long *) (cqr->data);
+ ccw->cda = (__u32)(addr_t) idaw;
+ ccw->flags = CCW_FLAG_IDA;
+ idaw = idal_create_words(idaw, rdc_buffer, rdc_buffer_size);
+ } else {
+ ccw->cda = (__u32)(addr_t) rdc_buffer;
+ ccw->flags = 0;
+ }
+ ccw->count = rdc_buffer_size;
cqr->startdev = device;
cqr->memdev = device;
cqr->expires = 10*HZ;
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 0be7c15..417b97c 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -3216,6 +3216,7 @@
struct dasd_eckd_characteristics temp_rdc_data;
int is_known, rc;
struct dasd_uid temp_uid;
+ unsigned long flags;
private = (struct dasd_eckd_private *) device->private;
@@ -3228,7 +3229,8 @@
rc = dasd_eckd_generate_uid(device, &private->uid);
dasd_get_uid(device->cdev, &temp_uid);
if (memcmp(&private->uid, &temp_uid, sizeof(struct dasd_uid)) != 0)
- dev_err(&device->cdev->dev, "The UID of the DASD has changed\n");
+ dev_err(&device->cdev->dev, "The UID of the DASD has "
+ "changed\n");
if (rc)
goto out_err;
dasd_set_uid(device->cdev, &private->uid);
@@ -3256,9 +3258,9 @@
"device: %s", rc, dev_name(&device->cdev->dev));
goto out_err;
}
- spin_lock(get_ccwdev_lock(device->cdev));
+ spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
memcpy(&private->rdc_data, &temp_rdc_data, sizeof(temp_rdc_data));
- spin_unlock(get_ccwdev_lock(device->cdev));
+ spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
/* add device to alias management */
dasd_alias_add_device(device);
diff --git a/drivers/s390/char/sclp_async.c b/drivers/s390/char/sclp_async.c
index daaec18..a4f68e5 100644
--- a/drivers/s390/char/sclp_async.c
+++ b/drivers/s390/char/sclp_async.c
@@ -62,7 +62,7 @@
.priority = INT_MAX,
};
-static int proc_handler_callhome(ctl_table *ctl, int write, struct file *filp,
+static int proc_handler_callhome(struct ctl_table *ctl, int write,
void __user *buffer, size_t *count,
loff_t *ppos)
{
@@ -100,7 +100,7 @@
{
.procname = "callhome",
.mode = 0644,
- .proc_handler = &proc_handler_callhome,
+ .proc_handler = proc_handler_callhome,
},
{ .ctl_name = 0 }
};
diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index 178724f..b9d2a00 100644
--- a/drivers/s390/char/sclp_vt220.c
+++ b/drivers/s390/char/sclp_vt220.c
@@ -705,21 +705,6 @@
}
__initcall(sclp_vt220_tty_init);
-#ifdef CONFIG_SCLP_VT220_CONSOLE
-
-static void
-sclp_vt220_con_write(struct console *con, const char *buf, unsigned int count)
-{
- __sclp_vt220_write((const unsigned char *) buf, count, 1, 1, 0);
-}
-
-static struct tty_driver *
-sclp_vt220_con_device(struct console *c, int *index)
-{
- *index = 0;
- return sclp_vt220_driver;
-}
-
static void __sclp_vt220_flush_buffer(void)
{
unsigned long flags;
@@ -776,6 +761,21 @@
}
}
+#ifdef CONFIG_SCLP_VT220_CONSOLE
+
+static void
+sclp_vt220_con_write(struct console *con, const char *buf, unsigned int count)
+{
+ __sclp_vt220_write((const unsigned char *) buf, count, 1, 1, 0);
+}
+
+static struct tty_driver *
+sclp_vt220_con_device(struct console *c, int *index)
+{
+ *index = 0;
+ return sclp_vt220_driver;
+}
+
static int
sclp_vt220_notify(struct notifier_block *self,
unsigned long event, void *data)
diff --git a/drivers/s390/char/tape_block.c b/drivers/s390/char/tape_block.c
index 64f57ef..0c0705b 100644
--- a/drivers/s390/char/tape_block.c
+++ b/drivers/s390/char/tape_block.c
@@ -162,9 +162,10 @@
spin_lock_irq(&device->blk_data.request_queue_lock);
while (
!blk_queue_plugged(queue) &&
- (req = blk_fetch_request(queue)) &&
+ blk_peek_request(queue) &&
nr_queued < TAPEBLOCK_MIN_REQUEUE
) {
+ req = blk_fetch_request(queue);
if (rq_data_dir(req) == WRITE) {
DBF_EVENT(1, "TBLOCK: Rejecting write request\n");
spin_unlock_irq(&device->blk_data.request_queue_lock);
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 2ee093e..2490b74 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1250,8 +1250,7 @@
unsigned long flags;
struct ccw_dev_id dev_id;
- cdev = sch_get_cdev(sch);
- if (cdev) {
+ if (cio_is_console(sch->schid)) {
rc = sysfs_create_group(&sch->dev.kobj,
&io_subchannel_attr_group);
if (rc)
@@ -1260,13 +1259,13 @@
"0.%x.%04x (rc=%d)\n",
sch->schid.ssid, sch->schid.sch_no, rc);
/*
- * This subchannel already has an associated ccw_device.
+ * The console subchannel already has an associated ccw_device.
* Throw the delayed uevent for the subchannel, register
- * the ccw_device and exit. This happens for all early
- * devices, e.g. the console.
+ * the ccw_device and exit.
*/
dev_set_uevent_suppress(&sch->dev, 0);
kobject_uevent(&sch->dev.kobj, KOBJ_ADD);
+ cdev = sch_get_cdev(sch);
cdev->dev.groups = ccwdev_attr_groups;
device_initialize(&cdev->dev);
ccw_device_register(cdev);
diff --git a/drivers/watchdog/riowd.c b/drivers/watchdog/riowd.c
index 1e8f02f..d3c824d 100644
--- a/drivers/watchdog/riowd.c
+++ b/drivers/watchdog/riowd.c
@@ -206,7 +206,7 @@
dev_set_drvdata(&op->dev, p);
riowd_device = p;
- err = 0;
+ return 0;
out_iounmap:
of_iounmap(&op->resource[0], p->regs, 2);
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 3815ac1d..9af5672 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -142,6 +142,11 @@
#ifdef CONFIG_LOCK_STAT
static DEFINE_PER_CPU(struct lock_class_stats[MAX_LOCKDEP_KEYS], lock_stats);
+static inline u64 lockstat_clock(void)
+{
+ return cpu_clock(smp_processor_id());
+}
+
static int lock_point(unsigned long points[], unsigned long ip)
{
int i;
@@ -158,7 +163,7 @@
return i;
}
-static void lock_time_inc(struct lock_time *lt, s64 time)
+static void lock_time_inc(struct lock_time *lt, u64 time)
{
if (time > lt->max)
lt->max = time;
@@ -234,12 +239,12 @@
static void lock_release_holdtime(struct held_lock *hlock)
{
struct lock_class_stats *stats;
- s64 holdtime;
+ u64 holdtime;
if (!lock_stat)
return;
- holdtime = sched_clock() - hlock->holdtime_stamp;
+ holdtime = lockstat_clock() - hlock->holdtime_stamp;
stats = get_lock_stats(hlock_class(hlock));
if (hlock->read)
@@ -2792,7 +2797,7 @@
hlock->references = references;
#ifdef CONFIG_LOCK_STAT
hlock->waittime_stamp = 0;
- hlock->holdtime_stamp = sched_clock();
+ hlock->holdtime_stamp = lockstat_clock();
#endif
if (check == 2 && !mark_irqflags(curr, hlock))
@@ -3322,7 +3327,7 @@
if (hlock->instance != lock)
return;
- hlock->waittime_stamp = sched_clock();
+ hlock->waittime_stamp = lockstat_clock();
contention_point = lock_point(hlock_class(hlock)->contention_point, ip);
contending_point = lock_point(hlock_class(hlock)->contending_point,
@@ -3345,8 +3350,7 @@
struct held_lock *hlock, *prev_hlock;
struct lock_class_stats *stats;
unsigned int depth;
- u64 now;
- s64 waittime = 0;
+ u64 now, waittime = 0;
int i, cpu;
depth = curr->lockdep_depth;
@@ -3374,7 +3378,7 @@
cpu = smp_processor_id();
if (hlock->waittime_stamp) {
- now = sched_clock();
+ now = lockstat_clock();
waittime = now - hlock->waittime_stamp;
hlock->holdtime_stamp = now;
}
diff --git a/kernel/sched.c b/kernel/sched.c
index 8d25be0..e886895 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -676,6 +676,7 @@
/**
* runqueue_is_locked
+ * @cpu: the processor in question.
*
* Returns true if the current cpu runqueue is locked.
* This interface allows printk to be called with the runqueue lock
@@ -2311,7 +2312,7 @@
{
int cpu, orig_cpu, this_cpu, success = 0;
unsigned long flags;
- struct rq *rq;
+ struct rq *rq, *orig_rq;
if (!sched_feat(SYNC_WAKEUPS))
wake_flags &= ~WF_SYNC;
@@ -2319,7 +2320,7 @@
this_cpu = get_cpu();
smp_wmb();
- rq = task_rq_lock(p, &flags);
+ rq = orig_rq = task_rq_lock(p, &flags);
update_rq_clock(rq);
if (!(p->state & state))
goto out;
@@ -2350,6 +2351,10 @@
set_task_cpu(p, cpu);
rq = task_rq_lock(p, &flags);
+
+ if (rq != orig_rq)
+ update_rq_clock(rq);
+
WARN_ON(p->state != TASK_WAKING);
cpu = task_cpu(p);
@@ -3656,6 +3661,7 @@
/**
* update_sg_lb_stats - Update sched_group's statistics for load balancing.
+ * @sd: The sched_domain whose statistics are to be updated.
* @group: sched_group whose statistics are to be updated.
* @this_cpu: Cpu for which load balance is currently performed.
* @idle: Idle status of this_cpu
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 4506826..c820b03 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1393,7 +1393,7 @@
int trace_vprintk(unsigned long ip, const char *fmt, va_list args)
{
- return trace_array_printk(&global_trace, ip, fmt, args);
+ return trace_array_vprintk(&global_trace, ip, fmt, args);
}
EXPORT_SYMBOL_GPL(trace_vprintk);
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 2324578..98a6cc5 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -933,8 +933,9 @@
while (!list_empty(&ps->postfix)) {
elt = list_first_entry(&ps->postfix, struct postfix_elt, list);
- kfree(elt->operand);
list_del(&elt->list);
+ kfree(elt->operand);
+ kfree(elt);
}
}
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 5881943..742a32e 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -157,11 +157,18 @@
uname_P := $(shell sh -c 'uname -p 2>/dev/null || echo not')
uname_V := $(shell sh -c 'uname -v 2>/dev/null || echo not')
-# If we're on a 64-bit kernel, use -m64
-ifndef NO_64BIT
- ifneq ($(patsubst %64,%,$(uname_M)),$(uname_M))
- M64 := -m64
- endif
+#
+# Add -m32 for cross-builds:
+#
+ifdef NO_64BIT
+ MBITS := -m32
+else
+ #
+ # If we're on a 64-bit kernel, use -m64:
+ #
+ ifneq ($(patsubst %64,%,$(uname_M)),$(uname_M))
+ MBITS := -m64
+ endif
endif
# CFLAGS and LDFLAGS are for the users to override from the command line.
@@ -194,7 +201,7 @@
EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wstrict-prototypes
EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wdeclaration-after-statement
-CFLAGS = $(M64) -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)
+CFLAGS = $(MBITS) -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)
LDFLAGS = -lpthread -lrt -lelf -lm
ALL_CFLAGS = $(CFLAGS)
ALL_LDFLAGS = $(LDFLAGS)
@@ -416,7 +423,7 @@
endif
ifneq ($(shell sh -c "(echo '\#include <libelf.h>'; echo 'int main(void) { Elf * elf = elf_begin(0, ELF_C_READ_MMAP, 0); return (long)elf; }') | $(CC) -x c - $(ALL_CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -o /dev/null $(ALL_LDFLAGS) > /dev/null 2>&1 && echo y"), y)
- msg := $(error No libelf.h/libelf found, please install libelf-dev/elfutils-libelf-devel);
+ msg := $(error No libelf.h/libelf found, please install libelf-dev/elfutils-libelf-devel and glibc-dev[el]);
endif
ifdef NO_DEMANGLE
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index ea9c15c..ce2d5be 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -1287,7 +1287,7 @@
static LIST_HEAD(sort_list);
-static int sort_dimension__add(char *tok, struct list_head *list)
+static int sort_dimension__add(const char *tok, struct list_head *list)
{
int i;
@@ -1917,7 +1917,7 @@
free(str);
- sort_dimension__add((char *)"pid", &cmp_pid);
+ sort_dimension__add("pid", &cmp_pid);
}
static const char *record_args[] = {
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 87c424d..8cfb48c 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -691,7 +691,10 @@
FILE *file;
int id;
- sprintf(filename, "/sys/kernel/debug/tracing/events/%s/id", orgname);
+ sprintf(filename, "%s/", debugfs_path);
+ strncat(filename, orgname, strlen(orgname));
+ strcat(filename, "/id");
+
c = strchr(filename, ':');
if (c)
*c = '/';
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 55b41b9..55c9659 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -618,7 +618,7 @@
}
static int test_type_token(enum event_type type, char *token,
- enum event_type expect, char *expect_tok)
+ enum event_type expect, const char *expect_tok)
{
if (type != expect) {
die("Error: expected type %d but read %d",
@@ -650,7 +650,7 @@
return __read_expect_type(expect, tok, 1);
}
-static int __read_expected(enum event_type expect, char *str, int newline_ok)
+static int __read_expected(enum event_type expect, const char *str, int newline_ok)
{
enum event_type type;
char *token;
@@ -668,12 +668,12 @@
return 0;
}
-static int read_expected(enum event_type expect, char *str)
+static int read_expected(enum event_type expect, const char *str)
{
return __read_expected(expect, str, 1);
}
-static int read_expected_item(enum event_type expect, char *str)
+static int read_expected_item(enum event_type expect, const char *str)
{
return __read_expected(expect, str, 0);
}