Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | The following is a list of files and features that are going to be |
| 2 | removed in the kernel source tree. Every entry should contain what |
| 3 | exactly is going away, why it is happening, and who is going to be doing |
| 4 | the work. When the feature is removed from the kernel, it should also |
| 5 | be removed from this file. |
| 6 | |
| 7 | --------------------------- |
| 8 | |
| 9 | What: devfs |
| 10 | When: July 2005 |
| 11 | Files: fs/devfs/*, include/linux/devfs_fs*.h and assorted devfs |
| 12 | function calls throughout the kernel tree |
| 13 | Why: It has been unmaintained for a number of years, has unfixable |
| 14 | races, contains a naming policy within the kernel that is |
| 15 | against the LSB, and can be replaced by using udev. |
| 16 | Who: Greg Kroah-Hartman <greg@kroah.com> |
| 17 | |
| 18 | --------------------------- |
| 19 | |
Adrian Bunk | 98e7f29 | 2005-06-25 14:59:37 -0700 | [diff] [blame] | 20 | What: RAW driver (CONFIG_RAW_DRIVER) |
| 21 | When: December 2005 |
| 22 | Why: declared obsolete since kernel 2.6.3 |
| 23 | O_DIRECT can be used instead |
| 24 | Who: Adrian Bunk <bunk@stusta.de> |
| 25 | |
| 26 | --------------------------- |
| 27 | |
Adrian Bunk | aafda4e | 2006-04-20 02:43:21 -0700 | [diff] [blame^] | 28 | What: drivers that were depending on OBSOLETE_OSS_DRIVER |
| 29 | (config options already removed) |
| 30 | When: before 2.6.19 |
Adrian Bunk | cecd1ca | 2005-11-08 21:34:45 -0800 | [diff] [blame] | 31 | Why: OSS drivers with ALSA replacements |
| 32 | Who: Adrian Bunk <bunk@stusta.de> |
| 33 | |
| 34 | --------------------------- |
| 35 | |
Paul E. McKenney | 66cf8f1 | 2005-05-01 08:59:03 -0700 | [diff] [blame] | 36 | What: RCU API moves to EXPORT_SYMBOL_GPL |
| 37 | When: April 2006 |
| 38 | Files: include/linux/rcupdate.h, kernel/rcupdate.c |
| 39 | Why: Outside of Linux, the only implementations of anything even |
| 40 | vaguely resembling RCU that I am aware of are in DYNIX/ptx, |
| 41 | VM/XA, Tornado, and K42. I do not expect anyone to port binary |
| 42 | drivers or kernel modules from any of these, since the first two |
| 43 | are owned by IBM and the last two are open-source research OSes. |
| 44 | So these will move to GPL after a grace period to allow |
| 45 | people, who might be using implementations that I am not aware |
| 46 | of, to adjust to this upcoming change. |
| 47 | Who: Paul E. McKenney <paulmck@us.ibm.com> |
Jody McIntyre | a1446c7 | 2005-05-16 21:53:59 -0700 | [diff] [blame] | 48 | |
| 49 | --------------------------- |
| 50 | |
Jody McIntyre | a1446c7 | 2005-05-16 21:53:59 -0700 | [diff] [blame] | 51 | What: raw1394: requests of type RAW1394_REQ_ISO_SEND, RAW1394_REQ_ISO_LISTEN |
| 52 | When: November 2005 |
| 53 | Why: Deprecated in favour of the new ioctl-based rawiso interface, which is |
| 54 | more efficient. You should really be using libraw1394 for raw1394 |
| 55 | access anyway. |
| 56 | Who: Jody McIntyre <scjody@steamballoon.com> |
Grant Coady | 937df8d | 2005-05-12 11:59:29 +1000 | [diff] [blame] | 57 | |
| 58 | --------------------------- |
| 59 | |
Mauro Carvalho Chehab | 875c296 | 2005-11-08 21:38:53 -0800 | [diff] [blame] | 60 | What: Video4Linux API 1 ioctls and video_decoder.h from Video devices. |
| 61 | When: July 2006 |
| 62 | Why: V4L1 AP1 was replaced by V4L2 API. during migration from 2.4 to 2.6 |
| 63 | series. The old API have lots of drawbacks and don't provide enough |
| 64 | means to work with all video and audio standards. The newer API is |
| 65 | already available on the main drivers and should be used instead. |
| 66 | Newer drivers should use v4l_compat_translate_ioctl function to handle |
| 67 | old calls, replacing to newer ones. |
| 68 | Decoder iocts are using internally to allow video drivers to |
| 69 | communicate with video decoders. This should also be improved to allow |
| 70 | V4L2 calls being translated into compatible internal ioctls. |
| 71 | Who: Mauro Carvalho Chehab <mchehab@brturbo.com.br> |
| 72 | |
| 73 | --------------------------- |
| 74 | |
Adrian Bunk | 24622ef | 2005-11-07 01:01:44 -0800 | [diff] [blame] | 75 | What: remove EXPORT_SYMBOL(insert_resource) |
| 76 | When: April 2006 |
| 77 | Files: kernel/resource.c |
| 78 | Why: No modular usage in the kernel. |
| 79 | Who: Adrian Bunk <bunk@stusta.de> |
| 80 | |
| 81 | --------------------------- |
| 82 | |
Dominik Brodowski | bf45d9b0 | 2005-07-07 17:58:58 -0700 | [diff] [blame] | 83 | What: PCMCIA control ioctl (needed for pcmcia-cs [cardmgr, cardctl]) |
| 84 | When: November 2005 |
| 85 | Files: drivers/pcmcia/: pcmcia_ioctl.c |
| 86 | Why: With the 16-bit PCMCIA subsystem now behaving (almost) like a |
| 87 | normal hotpluggable bus, and with it using the default kernel |
| 88 | infrastructure (hotplug, driver core, sysfs) keeping the PCMCIA |
| 89 | control ioctl needed by cardmgr and cardctl from pcmcia-cs is |
| 90 | unnecessary, and makes further cleanups and integration of the |
| 91 | PCMCIA subsystem into the Linux kernel device driver model more |
| 92 | difficult. The features provided by cardmgr and cardctl are either |
| 93 | handled by the kernel itself now or are available in the new |
| 94 | pcmciautils package available at |
| 95 | http://kernel.org/pub/linux/utils/kernel/pcmcia/ |
| 96 | Who: Dominik Brodowski <linux@brodo.de> |
Harald Welte | 7af4cc3 | 2005-08-09 19:44:15 -0700 | [diff] [blame] | 97 | |
| 98 | --------------------------- |
| 99 | |
| 100 | What: ip_queue and ip6_queue (old ipv4-only and ipv6-only netfilter queue) |
| 101 | When: December 2005 |
| 102 | Why: This interface has been obsoleted by the new layer3-independent |
| 103 | "nfnetlink_queue". The Kernel interface is compatible, so the old |
| 104 | ip[6]tables "QUEUE" targets still work and will transparently handle |
| 105 | all packets into nfnetlink queue number 0. Userspace users will have |
| 106 | to link against API-compatible library on top of libnfnetlink_queue |
| 107 | instead of the current 'libipq'. |
| 108 | Who: Harald Welte <laforge@netfilter.org> |
Christoph Hellwig | 49705b7 | 2005-11-08 21:35:06 -0800 | [diff] [blame] | 109 | |
| 110 | --------------------------- |
| 111 | |
Christoph Hellwig | ac51589 | 2006-03-24 03:18:22 -0800 | [diff] [blame] | 112 | What: remove EXPORT_SYMBOL(kernel_thread) |
| 113 | When: August 2006 |
| 114 | Files: arch/*/kernel/*_ksyms.c |
| 115 | Why: kernel_thread is a low-level implementation detail. Drivers should |
| 116 | use the <linux/kthread.h> API instead which shields them from |
| 117 | implementation details and provides a higherlevel interface that |
| 118 | prevents bugs and code duplication |
| 119 | Who: Christoph Hellwig <hch@lst.de> |
| 120 | |
| 121 | --------------------------- |
| 122 | |
Ingo Molnar | a9df3d0 | 2006-01-14 13:21:33 -0800 | [diff] [blame] | 123 | What: CONFIG_FORCED_INLINING |
| 124 | When: June 2006 |
| 125 | Why: Config option is there to see if gcc is good enough. (in january |
| 126 | 2006). If it is, the behavior should just be the default. If it's not, |
| 127 | the option should just go away entirely. |
| 128 | Who: Arjan van de Ven |
| 129 | |
| 130 | --------------------------- |
| 131 | |
NeilBrown | e8a0033 | 2005-11-15 00:09:11 -0800 | [diff] [blame] | 132 | What: START_ARRAY ioctl for md |
| 133 | When: July 2006 |
| 134 | Files: drivers/md/md.c |
| 135 | Why: Not reliable by design - can fail when most needed. |
| 136 | Alternatives exist |
| 137 | Who: NeilBrown <neilb@suse.de> |
Ralf Baechle | e0c9b79 | 2005-11-08 22:36:48 +0000 | [diff] [blame] | 138 | |
| 139 | --------------------------- |
| 140 | |
| 141 | What: au1x00_uart driver |
| 142 | When: January 2006 |
| 143 | Why: The 8250 serial driver now has the ability to deal with the differences |
| 144 | between the standard 8250 family of UARTs and their slightly strange |
| 145 | brother on Alchemy SOCs. The loss of features is not considered an |
| 146 | issue. |
| 147 | Who: Ralf Baechle <ralf@linux-mips.org> |
Adrian Bunk | b4b2c04 | 2005-12-29 20:07:25 +0100 | [diff] [blame] | 148 | |
Bunk | c0d3c0c | 2006-02-07 01:43:31 -0500 | [diff] [blame] | 149 | --------------------------- |
| 150 | |
| 151 | What: eepro100 network driver |
| 152 | When: January 2007 |
| 153 | Why: replaced by the e100 driver |
| 154 | Who: Adrian Bunk <bunk@stusta.de> |
Jeff Garzik | 3c9b3a8 | 2006-02-07 01:47:12 -0500 | [diff] [blame] | 155 | |
| 156 | --------------------------- |
| 157 | |
Richard Knutsson | 051d989 | 2005-12-03 02:34:12 +0100 | [diff] [blame] | 158 | What: pci_module_init(driver) |
| 159 | When: January 2007 |
| 160 | Why: Is replaced by pci_register_driver(pci_driver). |
| 161 | Who: Richard Knutsson <ricknu-0@student.ltu.se> and Greg Kroah-Hartman <gregkh@suse.de> |
Jean Delvare | c5e3fbf | 2006-01-18 22:39:48 +0100 | [diff] [blame] | 162 | |
| 163 | --------------------------- |
| 164 | |
Thomas Gleixner | 7d99b7d | 2006-03-25 03:06:35 -0800 | [diff] [blame] | 165 | What: Usage of invalid timevals in setitimer |
| 166 | When: March 2007 |
| 167 | Why: POSIX requires to validate timevals in the setitimer call. This |
| 168 | was never done by Linux. The invalid (e.g. negative timevals) were |
| 169 | silently converted to more or less random timeouts and intervals. |
| 170 | Until the removal a per boot limited number of warnings is printed |
| 171 | and the timevals are sanitized. |
| 172 | |
| 173 | Who: Thomas Gleixner <tglx@linutronix.de> |
| 174 | |
| 175 | --------------------------- |
| 176 | |
Jean Delvare | c5e3fbf | 2006-01-18 22:39:48 +0100 | [diff] [blame] | 177 | What: I2C interface of the it87 driver |
| 178 | When: January 2007 |
| 179 | Why: The ISA interface is faster and should be always available. The I2C |
| 180 | probing is also known to cause trouble in at least one case (see |
| 181 | bug #5889.) |
| 182 | Who: Jean Delvare <khali@linux-fr.org> |
Greg Kroah-Hartman | fa67576 | 2006-02-22 09:39:02 -0800 | [diff] [blame] | 183 | |
| 184 | --------------------------- |
| 185 | |
Christoph Hellwig | de62a97 | 2006-03-24 03:18:33 -0800 | [diff] [blame] | 186 | What: remove EXPORT_SYMBOL(tasklist_lock) |
| 187 | When: August 2006 |
| 188 | Files: kernel/fork.c |
| 189 | Why: tasklist_lock protects the kernel internal task list. Modules have |
| 190 | no business looking at it, and all instances in drivers have been due |
| 191 | to use of too-lowlevel APIs. Having this symbol exported prevents |
| 192 | moving to more scalable locking schemes for the task list. |
| 193 | Who: Christoph Hellwig <hch@lst.de> |
| 194 | |
| 195 | --------------------------- |
| 196 | |
Greg Kroah-Hartman | fa67576 | 2006-02-22 09:39:02 -0800 | [diff] [blame] | 197 | What: mount/umount uevents |
| 198 | When: February 2007 |
| 199 | Why: These events are not correct, and do not properly let userspace know |
| 200 | when a file system has been mounted or unmounted. Userspace should |
| 201 | poll the /proc/mounts file instead to detect this properly. |
| 202 | Who: Greg Kroah-Hartman <gregkh@suse.de> |
Ralf Baechle | cf028d1 | 2006-03-02 16:50:12 +0000 | [diff] [blame] | 203 | |
| 204 | --------------------------- |
| 205 | |
| 206 | What: Support for NEC DDB5074 and DDB5476 evaluation boards. |
| 207 | When: June 2006 |
| 208 | Why: Board specific code doesn't build anymore since ~2.6.0 and no |
| 209 | users have complained indicating there is no more need for these |
| 210 | boards. This should really be considered a last call. |
| 211 | Who: Ralf Baechle <ralf@linux-mips.org> |
Greg Kroah-Hartman | b87ba0a | 2006-03-20 13:17:13 -0800 | [diff] [blame] | 212 | |
| 213 | --------------------------- |
| 214 | |
| 215 | What: USB driver API moves to EXPORT_SYMBOL_GPL |
| 216 | When: Febuary 2008 |
| 217 | Files: include/linux/usb.h, drivers/usb/core/driver.c |
| 218 | Why: The USB subsystem has changed a lot over time, and it has been |
| 219 | possible to create userspace USB drivers using usbfs/libusb/gadgetfs |
| 220 | that operate as fast as the USB bus allows. Because of this, the USB |
| 221 | subsystem will not be allowing closed source kernel drivers to |
| 222 | register with it, after this grace period is over. If anyone needs |
| 223 | any help in converting their closed source drivers over to use the |
| 224 | userspace filesystems, please contact the |
| 225 | linux-usb-devel@lists.sourceforge.net mailing list, and the developers |
| 226 | there will be glad to help you out. |
| 227 | Who: Greg Kroah-Hartman <gregkh@suse.de> |
| 228 | |
| 229 | --------------------------- |
Nick Piggin | 93fac70 | 2006-03-31 02:29:56 -0800 | [diff] [blame] | 230 | |
| 231 | What: find_trylock_page |
| 232 | When: January 2007 |
| 233 | Why: The interface no longer has any callers left in the kernel. It |
| 234 | is an odd interface (compared with other find_*_page functions), in |
| 235 | that it does not take a refcount to the page, only the page lock. |
| 236 | It should be replaced with find_get_page or find_lock_page if possible. |
| 237 | This feature removal can be reevaluated if users of the interface |
| 238 | cannot cleanly use something else. |
| 239 | Who: Nick Piggin <npiggin@suse.de> |
| 240 | |
| 241 | --------------------------- |