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 |
Jim Cromie | f0b919d | 2012-04-27 14:30:36 -0600 | [diff] [blame] | 5 | be removed from this file. The suggested deprecation period is 3 releases. |
| 6 | |
| 7 | --------------------------- |
| 8 | |
| 9 | What: ddebug_query="query" boot cmdline param |
| 10 | When: v3.8 |
| 11 | Why: obsoleted by dyndbg="query" and module.dyndbg="query" |
| 12 | Who: Jim Cromie <jim.cromie@gmail.com>, Jason Baron <jbaron@redhat.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | |
| 14 | --------------------------- |
| 15 | |
Len Brown | 99c6322 | 2011-04-01 15:19:23 -0400 | [diff] [blame] | 16 | What: CONFIG_APM_CPU_IDLE, and its ability to call APM BIOS in idle |
| 17 | When: 2012 |
| 18 | Why: This optional sub-feature of APM is of dubious reliability, |
| 19 | and ancient APM laptops are likely better served by calling HLT. |
| 20 | Deleting CONFIG_APM_CPU_IDLE allows x86 to stop exporting |
| 21 | the pm_idle function pointer to modules. |
| 22 | Who: Len Brown <len.brown@intel.com> |
| 23 | |
| 24 | ---------------------------- |
| 25 | |
Len Brown | cdaab4a | 2011-04-01 15:41:17 -0400 | [diff] [blame] | 26 | What: x86_32 "no-hlt" cmdline param |
| 27 | When: 2012 |
| 28 | Why: remove a branch from idle path, simplify code used by everybody. |
| 29 | This option disabled the use of HLT in idle and machine_halt() |
| 30 | for hardware that was flakey 15-years ago. Today we have |
| 31 | "idle=poll" that removed HLT from idle, and so if such a machine |
| 32 | is still running the upstream kernel, "idle=poll" is likely sufficient. |
| 33 | Who: Len Brown <len.brown@intel.com> |
| 34 | |
| 35 | ---------------------------- |
| 36 | |
Len Brown | 5d4c47e | 2011-04-01 15:46:09 -0400 | [diff] [blame] | 37 | What: x86 "idle=mwait" cmdline param |
| 38 | When: 2012 |
| 39 | Why: simplify x86 idle code |
| 40 | Who: Len Brown <len.brown@intel.com> |
| 41 | |
| 42 | ---------------------------- |
| 43 | |
Luis R. Rodriguez | 4d8cd26 | 2009-09-08 12:09:47 -0700 | [diff] [blame] | 44 | What: PRISM54 |
| 45 | When: 2.6.34 |
| 46 | |
| 47 | Why: prism54 FullMAC PCI / Cardbus devices used to be supported only by the |
| 48 | prism54 wireless driver. After Intersil stopped selling these |
| 49 | devices in preference for the newer more flexible SoftMAC devices |
| 50 | a SoftMAC device driver was required and prism54 did not support |
| 51 | them. The p54pci driver now exists and has been present in the kernel for |
| 52 | a while. This driver supports both SoftMAC devices and FullMAC devices. |
| 53 | The main difference between these devices was the amount of memory which |
| 54 | could be used for the firmware. The SoftMAC devices support a smaller |
| 55 | amount of memory. Because of this the SoftMAC firmware fits into FullMAC |
| 56 | devices's memory. p54pci supports not only PCI / Cardbus but also USB |
| 57 | and SPI. Since p54pci supports all devices prism54 supports |
| 58 | you will have a conflict. I'm not quite sure how distributions are |
| 59 | handling this conflict right now. prism54 was kept around due to |
| 60 | claims users may experience issues when using the SoftMAC driver. |
| 61 | Time has passed users have not reported issues. If you use prism54 |
| 62 | and for whatever reason you cannot use p54pci please let us know! |
| 63 | E-mail us at: linux-wireless@vger.kernel.org |
| 64 | |
| 65 | For more information see the p54 wiki page: |
| 66 | |
| 67 | http://wireless.kernel.org/en/users/Drivers/p54 |
| 68 | |
| 69 | Who: Luis R. Rodriguez <lrodriguez@atheros.com> |
| 70 | |
| 71 | --------------------------- |
| 72 | |
Robin Getz | 9d9b8fb0 | 2009-06-17 16:25:54 -0700 | [diff] [blame] | 73 | What: IRQF_SAMPLE_RANDOM |
| 74 | Check: IRQF_SAMPLE_RANDOM |
| 75 | When: July 2009 |
| 76 | |
| 77 | Why: Many of IRQF_SAMPLE_RANDOM users are technically bogus as entropy |
| 78 | sources in the kernel's current entropy model. To resolve this, every |
| 79 | input point to the kernel's entropy pool needs to better document the |
| 80 | type of entropy source it actually is. This will be replaced with |
| 81 | additional add_*_randomness functions in drivers/char/random.c |
| 82 | |
| 83 | Who: Robin Getz <rgetz@blackfin.uclinux.org> & Matt Mackall <mpm@selenic.com> |
| 84 | |
| 85 | --------------------------- |
| 86 | |
Luis R. Rodriguez | 6ee7d33 | 2009-03-20 23:53:06 -0400 | [diff] [blame] | 87 | What: The ieee80211_regdom module parameter |
Luis R. Rodriguez | 8a5117d | 2009-03-24 21:21:07 -0400 | [diff] [blame] | 88 | When: March 2010 / desktop catchup |
Luis R. Rodriguez | 6ee7d33 | 2009-03-20 23:53:06 -0400 | [diff] [blame] | 89 | |
| 90 | Why: This was inherited by the CONFIG_WIRELESS_OLD_REGULATORY code, |
| 91 | and currently serves as an option for users to define an |
| 92 | ISO / IEC 3166 alpha2 code for the country they are currently |
| 93 | present in. Although there are userspace API replacements for this |
| 94 | through nl80211 distributions haven't yet caught up with implementing |
| 95 | decent alternatives through standard GUIs. Although available as an |
| 96 | option through iw or wpa_supplicant its just a matter of time before |
| 97 | distributions pick up good GUI options for this. The ideal solution |
| 98 | would actually consist of intelligent designs which would do this for |
| 99 | the user automatically even when travelling through different countries. |
| 100 | Until then we leave this module parameter as a compromise. |
| 101 | |
| 102 | When userspace improves with reasonable widely-available alternatives for |
| 103 | this we will no longer need this module parameter. This entry hopes that |
| 104 | by the super-futuristically looking date of "March 2010" we will have |
| 105 | such replacements widely available. |
| 106 | |
| 107 | Who: Luis R. Rodriguez <lrodriguez@atheros.com> |
| 108 | |
| 109 | --------------------------- |
| 110 | |
Alan Stern | 471d055 | 2007-07-12 16:55:07 -0400 | [diff] [blame] | 111 | What: dev->power.power_state |
Pavel Machek | 1ebfd79 | 2006-08-30 13:50:27 -0700 | [diff] [blame] | 112 | When: July 2007 |
| 113 | Why: Broken design for runtime control over driver power states, confusing |
| 114 | driver-internal runtime power management with: mechanisms to support |
| 115 | system-wide sleep state transitions; event codes that distinguish |
| 116 | different phases of swsusp "sleep" transitions; and userspace policy |
| 117 | inputs. This framework was never widely used, and most attempts to |
| 118 | use it were broken. Drivers should instead be exposing domain-specific |
| 119 | interfaces either to kernel or to userspace. |
Pavel Machek | a253129 | 2010-07-18 14:27:13 +0200 | [diff] [blame] | 120 | Who: Pavel Machek <pavel@ucw.cz> |
Pavel Machek | 1ebfd79 | 2006-08-30 13:50:27 -0700 | [diff] [blame] | 121 | |
| 122 | --------------------------- |
| 123 | |
David Rientjes | 51b1bd2 | 2010-08-09 17:19:47 -0700 | [diff] [blame] | 124 | What: /proc/<pid>/oom_adj |
| 125 | When: August 2012 |
| 126 | Why: /proc/<pid>/oom_adj allows userspace to influence the oom killer's |
| 127 | badness heuristic used to determine which task to kill when the kernel |
| 128 | is out of memory. |
| 129 | |
| 130 | The badness heuristic has since been rewritten since the introduction of |
| 131 | this tunable such that its meaning is deprecated. The value was |
| 132 | implemented as a bitshift on a score generated by the badness() |
| 133 | function that did not have any precise units of measure. With the |
| 134 | rewrite, the score is given as a proportion of available memory to the |
| 135 | task allocating pages, so using a bitshift which grows the score |
| 136 | exponentially is, thus, impossible to tune with fine granularity. |
| 137 | |
| 138 | A much more powerful interface, /proc/<pid>/oom_score_adj, was |
| 139 | introduced with the oom killer rewrite that allows users to increase or |
David Rientjes | 1123983 | 2011-07-25 17:12:17 -0700 | [diff] [blame] | 140 | decrease the badness score linearly. This interface will replace |
David Rientjes | 51b1bd2 | 2010-08-09 17:19:47 -0700 | [diff] [blame] | 141 | /proc/<pid>/oom_adj. |
| 142 | |
| 143 | A warning will be emitted to the kernel log if an application uses this |
| 144 | deprecated interface. After it is printed once, future warnings will be |
| 145 | suppressed until the kernel is rebooted. |
| 146 | |
| 147 | --------------------------- |
| 148 | |
Christoph Hellwig | ac51589 | 2006-03-24 03:18:22 -0800 | [diff] [blame] | 149 | What: remove EXPORT_SYMBOL(kernel_thread) |
| 150 | When: August 2006 |
| 151 | Files: arch/*/kernel/*_ksyms.c |
Andy Whitcroft | f0a594c | 2007-07-19 01:48:34 -0700 | [diff] [blame] | 152 | Check: kernel_thread |
Christoph Hellwig | ac51589 | 2006-03-24 03:18:22 -0800 | [diff] [blame] | 153 | Why: kernel_thread is a low-level implementation detail. Drivers should |
| 154 | use the <linux/kthread.h> API instead which shields them from |
| 155 | implementation details and provides a higherlevel interface that |
| 156 | prevents bugs and code duplication |
| 157 | Who: Christoph Hellwig <hch@lst.de> |
| 158 | |
| 159 | --------------------------- |
| 160 | |
Arjan van de Ven | f71d20e | 2006-06-28 04:26:45 -0700 | [diff] [blame] | 161 | What: Unused EXPORT_SYMBOL/EXPORT_SYMBOL_GPL exports |
| 162 | (temporary transition config option provided until then) |
| 163 | The transition config option will also be removed at the same time. |
| 164 | When: before 2.6.19 |
| 165 | Why: Unused symbols are both increasing the size of the kernel binary |
| 166 | and are often a sign of "wrong API" |
| 167 | Who: Arjan van de Ven <arjan@linux.intel.com> |
| 168 | |
| 169 | --------------------------- |
| 170 | |
Kay Sievers | d81d9d6 | 2006-08-13 06:17:09 +0200 | [diff] [blame] | 171 | What: PHYSDEVPATH, PHYSDEVBUS, PHYSDEVDRIVER in the uevent environment |
Dominik Brodowski | acbd39f | 2006-09-30 22:41:43 -0400 | [diff] [blame] | 172 | When: October 2008 |
Kay Sievers | d81d9d6 | 2006-08-13 06:17:09 +0200 | [diff] [blame] | 173 | Why: The stacking of class devices makes these values misleading and |
| 174 | inconsistent. |
| 175 | Class devices should not carry any of these properties, and bus |
| 176 | devices have SUBSYTEM and DRIVER as a replacement. |
| 177 | Who: Kay Sievers <kay.sievers@suse.de> |
| 178 | |
| 179 | --------------------------- |
Jean Delvare | 6c805d2 | 2006-08-13 23:45:52 +0200 | [diff] [blame] | 180 | |
Zhang Rui | b981c59 | 2007-01-29 11:02:30 +0800 | [diff] [blame] | 181 | What: ACPI procfs interface |
Zhang Rui | 8b8eb7d | 2007-07-18 17:23:24 +0800 | [diff] [blame] | 182 | When: July 2008 |
| 183 | Why: ACPI sysfs conversion should be finished by January 2008. |
| 184 | ACPI procfs interface will be removed in July 2008 so that |
| 185 | there is enough time for the user space to catch up. |
Zhang Rui | b981c59 | 2007-01-29 11:02:30 +0800 | [diff] [blame] | 186 | Who: Zhang Rui <rui.zhang@intel.com> |
| 187 | |
| 188 | --------------------------- |
| 189 | |
Zhang Rui | 6d855fc | 2011-01-10 11:16:30 +0800 | [diff] [blame] | 190 | What: CONFIG_ACPI_PROCFS_POWER |
| 191 | When: 2.6.39 |
| 192 | Why: sysfs I/F for ACPI power devices, including AC and Battery, |
Justin P. Mattock | 70f23fd | 2011-05-10 10:16:21 +0200 | [diff] [blame] | 193 | has been working in upstream kernel since 2.6.24, Sep 2007. |
Zhang Rui | 6d855fc | 2011-01-10 11:16:30 +0800 | [diff] [blame] | 194 | In 2.6.37, we make the sysfs I/F always built in and this option |
| 195 | disabled by default. |
| 196 | Remove this option and the ACPI power procfs interface in 2.6.39. |
| 197 | Who: Zhang Rui <rui.zhang@intel.com> |
| 198 | |
| 199 | --------------------------- |
| 200 | |
Len Brown | 14e04fb | 2007-08-23 15:20:26 -0400 | [diff] [blame] | 201 | What: /proc/acpi/event |
| 202 | When: February 2008 |
| 203 | Why: /proc/acpi/event has been replaced by events via the input layer |
| 204 | and netlink since 2.6.23. |
| 205 | Who: Len Brown <len.brown@intel.com> |
| 206 | |
| 207 | --------------------------- |
| 208 | |
Thomas Gleixner | 914d97f | 2007-10-11 11:20:05 +0200 | [diff] [blame] | 209 | What: i386/x86_64 bzImage symlinks |
Ingo Molnar | 19b4e7f | 2008-04-10 10:12:27 +0200 | [diff] [blame] | 210 | When: April 2010 |
Thomas Gleixner | 914d97f | 2007-10-11 11:20:05 +0200 | [diff] [blame] | 211 | |
| 212 | Why: The i386/x86_64 merge provides a symlink to the old bzImage |
| 213 | location so not yet updated user space tools, e.g. package |
| 214 | scripts, do not break. |
| 215 | Who: Thomas Gleixner <tglx@linutronix.de> |
Linus Torvalds | 038a500 | 2007-10-11 19:40:14 -0700 | [diff] [blame] | 216 | |
| 217 | --------------------------- |
| 218 | |
David Brownell | 8a0cecf | 2009-04-02 16:57:06 -0700 | [diff] [blame] | 219 | What: GPIO autorequest on gpio_direction_{input,output}() in gpiolib |
| 220 | When: February 2010 |
| 221 | Why: All callers should use explicit gpio_request()/gpio_free(). |
| 222 | The autorequest mechanism in gpiolib was provided mostly as a |
| 223 | migration aid for legacy GPIO interfaces (for SOC based GPIOs). |
| 224 | Those users have now largely migrated. Platforms implementing |
| 225 | the GPIO interfaces without using gpiolib will see no changes. |
| 226 | Who: David Brownell <dbrownell@users.sourceforge.net> |
| 227 | --------------------------- |
| 228 | |
Michael Buesch | eb189d8b | 2008-01-28 14:47:41 -0800 | [diff] [blame] | 229 | What: b43 support for firmware revision < 410 |
Michael Buesch | c557289 | 2008-12-27 18:26:39 +0100 | [diff] [blame] | 230 | When: The schedule was July 2008, but it was decided that we are going to keep the |
| 231 | code as long as there are no major maintanance headaches. |
| 232 | So it _could_ be removed _any_ time now, if it conflicts with something new. |
Michael Buesch | eb189d8b | 2008-01-28 14:47:41 -0800 | [diff] [blame] | 233 | Why: The support code for the old firmware hurts code readability/maintainability |
| 234 | and slightly hurts runtime performance. Bugfixes for the old firmware |
| 235 | are not provided by Broadcom anymore. |
Michael Büsch | eb032b9 | 2011-07-04 20:50:05 +0200 | [diff] [blame] | 236 | Who: Michael Buesch <m@bues.ch> |
David S. Miller | e88bb41 | 2008-02-09 23:08:53 -0800 | [diff] [blame] | 237 | |
| 238 | --------------------------- |
| 239 | |
Ravikiran G Thirumalai | 2584e51 | 2009-03-31 15:21:26 -0700 | [diff] [blame] | 240 | What: Ability for non root users to shm_get hugetlb pages based on mlock |
| 241 | resource limits |
| 242 | When: 2.6.31 |
| 243 | Why: Non root users need to be part of /proc/sys/vm/hugetlb_shm_group or |
| 244 | have CAP_IPC_LOCK to be able to allocate shm segments backed by |
| 245 | huge pages. The mlock based rlimit check to allow shm hugetlb is |
| 246 | inconsistent with mmap based allocations. Hence it is being |
| 247 | deprecated. |
| 248 | Who: Ravikiran Thirumalai <kiran@scalex86.org> |
| 249 | |
| 250 | --------------------------- |
| 251 | |
Johannes Berg | 22bb1be | 2008-07-10 11:16:47 +0200 | [diff] [blame] | 252 | What: Code that is now under CONFIG_WIRELESS_EXT_SYSFS |
| 253 | (in net/core/net-sysfs.c) |
Johannes Berg | 0052d81 | 2011-12-06 20:45:37 +0100 | [diff] [blame] | 254 | When: 3.5 |
Johannes Berg | 22bb1be | 2008-07-10 11:16:47 +0200 | [diff] [blame] | 255 | Why: Over 1K .text/.data size reduction, data is available in other |
| 256 | ways (ioctls) |
| 257 | Who: Johannes Berg <johannes@sipsolutions.net> |
Krzysztof Piotr Oledzki | 5840157 | 2008-07-21 10:01:34 -0700 | [diff] [blame] | 258 | |
| 259 | --------------------------- |
| 260 | |
Dave Jones | 753b7ae | 2009-03-09 15:14:37 -0400 | [diff] [blame] | 261 | What: sysfs ui for changing p4-clockmod parameters |
| 262 | When: September 2009 |
| 263 | Why: See commits 129f8ae9b1b5be94517da76009ea956e89104ce8 and |
| 264 | e088e4c9cdb618675874becb91b2fd581ee707e6. |
| 265 | Removal is subject to fixing any remaining bugs in ACPI which may |
| 266 | cause the thermal throttling not to happen at the right time. |
| 267 | Who: Dave Jones <davej@redhat.com>, Matthew Garrett <mjg@redhat.com> |
Thomas Gleixner | 0e57aa1 | 2009-03-13 14:34:05 +0100 | [diff] [blame] | 268 | |
| 269 | ----------------------------- |
| 270 | |
Alex Chiang | f110ca4 | 2009-03-20 14:56:56 -0600 | [diff] [blame] | 271 | What: fakephp and associated sysfs files in /sys/bus/pci/slots/ |
| 272 | When: 2011 |
| 273 | Why: In 2.6.27, the semantics of /sys/bus/pci/slots was redefined to |
| 274 | represent a machine's physical PCI slots. The change in semantics |
| 275 | had userspace implications, as the hotplug core no longer allowed |
| 276 | drivers to create multiple sysfs files per physical slot (required |
| 277 | for multi-function devices, e.g.). fakephp was seen as a developer's |
| 278 | tool only, and its interface changed. Too late, we learned that |
| 279 | there were some users of the fakephp interface. |
| 280 | |
| 281 | In 2.6.30, the original fakephp interface was restored. At the same |
| 282 | time, the PCI core gained the ability that fakephp provided, namely |
| 283 | function-level hot-remove and hot-add. |
| 284 | |
| 285 | Since the PCI core now provides the same functionality, exposed in: |
| 286 | |
| 287 | /sys/bus/pci/rescan |
| 288 | /sys/bus/pci/devices/.../remove |
| 289 | /sys/bus/pci/devices/.../rescan |
| 290 | |
| 291 | there is no functional reason to maintain fakephp as well. |
| 292 | |
| 293 | We will keep the existing module so that 'modprobe fakephp' will |
| 294 | present the old /sys/bus/pci/slots/... interface for compatibility, |
| 295 | but users are urged to migrate their applications to the API above. |
| 296 | |
| 297 | After a reasonable transition period, we will remove the legacy |
| 298 | fakephp interface. |
| 299 | Who: Alex Chiang <achiang@hp.com> |
Jean Delvare | 3f307fb | 2009-04-13 17:02:13 +0200 | [diff] [blame] | 300 | |
| 301 | --------------------------- |
| 302 | |
Johannes Berg | c64fb01 | 2009-06-02 13:01:38 +0200 | [diff] [blame] | 303 | What: CONFIG_RFKILL_INPUT |
| 304 | When: 2.6.33 |
| 305 | Why: Should be implemented in userspace, policy daemon. |
| 306 | Who: Johannes Berg <johannes@sipsolutions.net> |
David S. Miller | 9cbc1cb | 2009-06-15 03:02:23 -0700 | [diff] [blame] | 307 | |
Andi Kleen | 45f458e | 2009-04-28 23:18:26 +0200 | [diff] [blame] | 308 | ---------------------------- |
| 309 | |
Tejun Heo | 93fe448 | 2009-08-06 18:14:26 +0900 | [diff] [blame] | 310 | What: sound-slot/service-* module aliases and related clutters in |
| 311 | sound/sound_core.c |
| 312 | When: August 2010 |
| 313 | Why: OSS sound_core grabs all legacy minors (0-255) of SOUND_MAJOR |
| 314 | (14) and requests modules using custom sound-slot/service-* |
| 315 | module aliases. The only benefit of doing this is allowing |
| 316 | use of custom module aliases which might as well be considered |
| 317 | a bug at this point. This preemptive claiming prevents |
| 318 | alternative OSS implementations. |
| 319 | |
| 320 | Till the feature is removed, the kernel will be requesting |
| 321 | both sound-slot/service-* and the standard char-major-* module |
| 322 | aliases and allow turning off the pre-claiming selectively via |
| 323 | CONFIG_SOUND_OSS_CORE_PRECLAIM and soundcore.preclaim_oss |
| 324 | kernel parameter. |
| 325 | |
| 326 | After the transition phase is complete, both the custom module |
| 327 | aliases and switches to disable it will go away. This removal |
| 328 | will also allow making ALSA OSS emulation independent of |
| 329 | sound_core. The dependency will be broken then too. |
| 330 | Who: Tejun Heo <tj@kernel.org> |
Alok Kataria | d0153ca | 2009-09-29 10:25:24 -0700 | [diff] [blame] | 331 | |
| 332 | ---------------------------- |
| 333 | |
florian@mickler.org | 69c8637 | 2010-02-24 12:05:16 +0100 | [diff] [blame] | 334 | What: sysfs-class-rfkill state file |
| 335 | When: Feb 2014 |
| 336 | Files: net/rfkill/core.c |
| 337 | Why: Documented as obsolete since Feb 2010. This file is limited to 3 |
| 338 | states while the rfkill drivers can have 4 states. |
| 339 | Who: anybody or Florian Mickler <florian@mickler.org> |
| 340 | |
| 341 | ---------------------------- |
| 342 | |
| 343 | What: sysfs-class-rfkill claim file |
| 344 | When: Feb 2012 |
| 345 | Files: net/rfkill/core.c |
| 346 | Why: It is not possible to claim an rfkill driver since 2007. This is |
| 347 | Documented as obsolete since Feb 2010. |
| 348 | Who: anybody or Florian Mickler <florian@mickler.org> |
| 349 | |
| 350 | ---------------------------- |
| 351 | |
Wey-Yi Guy | 2b06861 | 2010-03-22 09:17:39 -0700 | [diff] [blame] | 352 | What: iwlwifi 50XX module parameters |
Deepak Saxena | d5b55a8 | 2011-06-09 15:03:03 -0700 | [diff] [blame] | 353 | When: 3.0 |
Wey-Yi Guy | 2b06861 | 2010-03-22 09:17:39 -0700 | [diff] [blame] | 354 | Why: The "..50" modules parameters were used to configure 5000 series and |
| 355 | up devices; different set of module parameters also available for 4965 |
| 356 | with same functionalities. Consolidate both set into single place |
| 357 | in drivers/net/wireless/iwlwifi/iwl-agn.c |
| 358 | |
| 359 | Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> |
Wey-Yi Guy | d34a5a6 | 2010-03-23 10:17:03 -0700 | [diff] [blame] | 360 | |
| 361 | ---------------------------- |
| 362 | |
| 363 | What: iwl4965 alias support |
Deepak Saxena | d5b55a8 | 2011-06-09 15:03:03 -0700 | [diff] [blame] | 364 | When: 3.0 |
Wey-Yi Guy | d34a5a6 | 2010-03-23 10:17:03 -0700 | [diff] [blame] | 365 | Why: Internal alias support has been present in module-init-tools for some |
| 366 | time, the MODULE_ALIAS("iwl4965") boilerplate aliases can be removed |
| 367 | with no impact. |
| 368 | |
| 369 | Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> |
Patrick McHardy | 6291055 | 2010-04-20 16:02:01 +0200 | [diff] [blame] | 370 | |
Jan Engelhardt | 0cb47ea | 2010-03-16 18:25:12 +0100 | [diff] [blame] | 371 | --------------------------- |
| 372 | |
| 373 | What: xt_NOTRACK |
| 374 | Files: net/netfilter/xt_NOTRACK.c |
| 375 | When: April 2011 |
| 376 | Why: Superseded by xt_CT |
| 377 | Who: Netfilter developer team <netfilter-devel@vger.kernel.org> |
David S. Miller | 278554b | 2010-05-12 00:05:35 -0700 | [diff] [blame] | 378 | |
Linus Torvalds | 6e0b7b2 | 2010-05-19 17:09:40 -0700 | [diff] [blame] | 379 | ---------------------------- |
| 380 | |
Thomas Gleixner | 6932bf3 | 2010-03-26 00:06:55 +0000 | [diff] [blame] | 381 | What: IRQF_DISABLED |
| 382 | When: 2.6.36 |
| 383 | Why: The flag is a NOOP as we run interrupt handlers with interrupts disabled |
| 384 | Who: Thomas Gleixner <tglx@linutronix.de> |
Linus Torvalds | 6e0b7b2 | 2010-05-19 17:09:40 -0700 | [diff] [blame] | 385 | |
| 386 | ---------------------------- |
| 387 | |
FUJITA Tomonori | 1758336 | 2010-08-10 18:03:26 -0700 | [diff] [blame] | 388 | What: PCI DMA unmap state API |
| 389 | When: August 2012 |
| 390 | Why: PCI DMA unmap state API (include/linux/pci-dma.h) was replaced |
| 391 | with DMA unmap state API (DMA unmap state API can be used for |
| 392 | any bus). |
| 393 | Who: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> |
| 394 | |
| 395 | ---------------------------- |
FUJITA Tomonori | a35274c | 2010-08-10 18:03:26 -0700 | [diff] [blame] | 396 | |
Wey-Yi Guy | 72645ef | 2010-10-06 07:42:43 -0700 | [diff] [blame] | 397 | What: iwlwifi disable_hw_scan module parameters |
Deepak Saxena | d5b55a8 | 2011-06-09 15:03:03 -0700 | [diff] [blame] | 398 | When: 3.0 |
Wey-Yi Guy | 72645ef | 2010-10-06 07:42:43 -0700 | [diff] [blame] | 399 | Why: Hareware scan is the prefer method for iwlwifi devices for |
| 400 | scanning operation. Remove software scan support for all the |
| 401 | iwlwifi devices. |
| 402 | |
| 403 | Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> |
| 404 | |
| 405 | ---------------------------- |
Linus Torvalds | 4390110 | 2010-10-26 09:55:25 -0700 | [diff] [blame] | 406 | |
Jean Delvare | 632bdb2 | 2011-01-12 21:55:10 +0100 | [diff] [blame] | 407 | What: Legacy, non-standard chassis intrusion detection interface. |
| 408 | When: June 2011 |
| 409 | Why: The adm9240, w83792d and w83793 hardware monitoring drivers have |
| 410 | legacy interfaces for chassis intrusion detection. A standard |
| 411 | interface has been added to each driver, so the legacy interface |
| 412 | can be removed. |
| 413 | Who: Jean Delvare <khali@linux-fr.org> |
| 414 | |
| 415 | ---------------------------- |
Michal Hocko | 552b372 | 2011-02-01 15:52:31 -0800 | [diff] [blame] | 416 | |
Jan Engelhardt | cc4fc02 | 2011-01-18 17:32:40 +0100 | [diff] [blame] | 417 | What: xt_connlimit rev 0 |
| 418 | When: 2012 |
| 419 | Who: Jan Engelhardt <jengelh@medozas.de> |
| 420 | Files: net/netfilter/xt_connlimit.c |
| 421 | |
| 422 | ---------------------------- |
David S. Miller | da935c6 | 2011-02-19 19:17:35 -0800 | [diff] [blame] | 423 | |
Florian Westphal | de81bbe | 2011-03-15 20:16:20 +0100 | [diff] [blame] | 424 | What: ipt_addrtype match include file |
| 425 | When: 2012 |
| 426 | Why: superseded by xt_addrtype |
| 427 | Who: Florian Westphal <fw@strlen.de> |
| 428 | Files: include/linux/netfilter_ipv4/ipt_addrtype.h |
| 429 | |
| 430 | ---------------------------- |
Jean Delvare | fe6fc25 | 2011-03-20 14:50:53 +0100 | [diff] [blame] | 431 | |
| 432 | What: i2c_driver.attach_adapter |
| 433 | i2c_driver.detach_adapter |
| 434 | When: September 2011 |
| 435 | Why: These legacy callbacks should no longer be used as i2c-core offers |
| 436 | a variety of preferable alternative ways to instantiate I2C devices. |
| 437 | Who: Jean Delvare <khali@linux-fr.org> |
| 438 | |
| 439 | ---------------------------- |
Laurent Pinchart | 1dc8ddf | 2010-10-12 12:11:30 -0300 | [diff] [blame] | 440 | |
Hans Verkuil | 6293698 | 2011-06-13 09:38:54 -0300 | [diff] [blame] | 441 | What: Opening a radio device node will no longer automatically switch the |
| 442 | tuner mode from tv to radio. |
| 443 | When: 3.3 |
| 444 | Why: Just opening a V4L device should not change the state of the hardware |
| 445 | like that. It's very unexpected and against the V4L spec. Instead, you |
| 446 | switch to radio mode by calling VIDIOC_S_FREQUENCY. This is the second |
| 447 | and last step of the move to consistent handling of tv and radio tuners. |
| 448 | Who: Hans Verkuil <hans.verkuil@cisco.com> |
| 449 | |
| 450 | ---------------------------- |
Linus Torvalds | f549953 | 2011-07-25 23:08:32 -0700 | [diff] [blame] | 451 | |
Alan Stern | 664a51a | 2011-06-15 16:31:37 -0400 | [diff] [blame] | 452 | What: g_file_storage driver |
| 453 | When: 3.8 |
| 454 | Why: This driver has been superseded by g_mass_storage. |
| 455 | Who: Alan Stern <stern@rowland.harvard.edu> |
| 456 | |
| 457 | ---------------------------- |
Lee, Chun-Yi | 7b8aca6 | 2011-05-31 14:52:22 +0800 | [diff] [blame] | 458 | |
| 459 | What: threeg and interface sysfs files in /sys/devices/platform/acer-wmi |
| 460 | When: 2012 |
| 461 | Why: In 3.0, we can now autodetect internal 3G device and already have |
| 462 | the threeg rfkill device. So, we plan to remove threeg sysfs support |
| 463 | for it's no longer necessary. |
| 464 | |
| 465 | We also plan to remove interface sysfs file that exposed which ACPI-WMI |
| 466 | interface that was used by acer-wmi driver. It will replaced by |
| 467 | information log when acer-wmi initial. |
| 468 | Who: Lee, Chun-Yi <jlee@novell.com> |
Christoph Hellwig | 242d621 | 2011-08-24 05:57:51 +0000 | [diff] [blame] | 469 | |
Michal Nazarewicz | d327ab5 | 2011-11-19 18:27:37 +0100 | [diff] [blame] | 470 | --------------------------- |
| 471 | |
| 472 | What: /sys/devices/platform/_UDC_/udc/_UDC_/is_dualspeed file and |
| 473 | is_dualspeed line in /sys/devices/platform/ci13xxx_*/udc/device file. |
| 474 | When: 3.8 |
| 475 | Why: The is_dualspeed file is superseded by maximum_speed in the same |
| 476 | directory and is_dualspeed line in device file is superseded by |
| 477 | max_speed line in the same file. |
| 478 | |
| 479 | The maximum_speed/max_speed specifies maximum speed supported by UDC. |
| 480 | To check if dualspeeed is supported, check if the value is >= 3. |
| 481 | Various possible speeds are defined in <linux/usb/ch9.h>. |
| 482 | Who: Michal Nazarewicz <mina86@mina86.com> |
| 483 | |
Christoph Hellwig | 242d621 | 2011-08-24 05:57:51 +0000 | [diff] [blame] | 484 | ---------------------------- |
John W. Linville | 094daf7 | 2011-10-11 15:35:42 -0400 | [diff] [blame] | 485 | |
Christoph Hellwig | 242d621 | 2011-08-24 05:57:51 +0000 | [diff] [blame] | 486 | What: The XFS nodelaylog mount option |
| 487 | When: 3.3 |
| 488 | Why: The delaylog mode that has been the default since 2.6.39 has proven |
| 489 | stable, and the old code is in the way of additional improvements in |
| 490 | the log code. |
| 491 | Who: Christoph Hellwig <hch@lst.de> |
John W. Linville | 094daf7 | 2011-10-11 15:35:42 -0400 | [diff] [blame] | 492 | |
| 493 | ---------------------------- |
| 494 | |
Don Fry | 3c607d2 | 2011-09-30 11:40:20 -0700 | [diff] [blame] | 495 | What: iwlagn alias support |
| 496 | When: 3.5 |
| 497 | Why: The iwlagn module has been renamed iwlwifi. The alias will be around |
| 498 | for backward compatibility for several cycles and then dropped. |
John W. Linville | 094daf7 | 2011-10-11 15:35:42 -0400 | [diff] [blame] | 499 | Who: Don Fry <donald.h.fry@intel.com> |
Bjorn Helgaas | 7e00fe2 | 2011-10-28 16:26:05 -0600 | [diff] [blame] | 500 | |
| 501 | ---------------------------- |
| 502 | |
| 503 | What: pci_scan_bus_parented() |
| 504 | When: 3.5 |
| 505 | Why: The pci_scan_bus_parented() interface creates a new root bus. The |
| 506 | bus is created with default resources (ioport_resource and |
| 507 | iomem_resource) that are always wrong, so we rely on arch code to |
| 508 | correct them later. Callers of pci_scan_bus_parented() should |
| 509 | convert to using pci_scan_root_bus() so they can supply a list of |
| 510 | bus resources when the bus is created. |
| 511 | Who: Bjorn Helgaas <bhelgaas@google.com> |
Nicolas Ferre | 08a52e1 | 2012-01-06 16:09:37 +0100 | [diff] [blame] | 512 | |
| 513 | ---------------------------- |
| 514 | |
Sebastian Andrzej Siewior | 7396bd9 | 2012-03-15 21:59:36 +0100 | [diff] [blame] | 515 | What: Low Performance USB Block driver ("CONFIG_BLK_DEV_UB") |
| 516 | When: 3.6 |
| 517 | Why: This driver provides support for USB storage devices like "USB |
| 518 | sticks". As of now, it is deactivated in Debian, Fedora and |
| 519 | Ubuntu. All current users can switch over to usb-storage |
| 520 | (CONFIG_USB_STORAGE) which only drawback is the additional SCSI |
| 521 | stack. |
| 522 | Who: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> |
Linus Torvalds | 9f39383 | 2012-03-21 09:40:26 -0700 | [diff] [blame] | 523 | |
| 524 | ---------------------------- |
| 525 | |
Cong Wang | 317b6e1 | 2011-11-26 11:12:30 +0800 | [diff] [blame] | 526 | What: kmap_atomic(page, km_type) |
| 527 | When: 3.5 |
| 528 | Why: The old kmap_atomic() with two arguments is deprecated, we only |
| 529 | keep it for backward compatibility for few cycles and then drop it. |
| 530 | Who: Cong Wang <amwang@redhat.com> |
Kees Cook | ec0c427 | 2012-03-23 12:08:55 -0700 | [diff] [blame] | 531 | |
| 532 | ---------------------------- |
| 533 | |
| 534 | What: get_robust_list syscall |
| 535 | When: 2013 |
| 536 | Why: There appear to be no production users of the get_robust_list syscall, |
| 537 | and it runs the risk of leaking address locations, allowing the bypass |
| 538 | of ASLR. It was only ever intended for debugging, so it should be |
| 539 | removed. |
| 540 | Who: Kees Cook <keescook@chromium.org> |
Linus Torvalds | ccb1ec9 | 2012-04-12 15:16:26 -0700 | [diff] [blame] | 541 | |
| 542 | ---------------------------- |
| 543 | |
Samuel Ortiz | 4333459 | 2012-05-07 12:31:30 +0200 | [diff] [blame] | 544 | What: Removing the pn544 raw driver. |
| 545 | When: 3.6 |
| 546 | Why: With the introduction of the NFC HCI and SHDL kernel layers, pn544.c |
| 547 | is being replaced by pn544_hci.c which is accessible through the netlink |
| 548 | and socket NFC APIs. Moreover, pn544.c is outdated and does not seem to |
| 549 | work properly with the latest Android stacks. |
| 550 | Having 2 drivers for the same hardware is confusing and as such we |
| 551 | should only keep the one following the kernel NFC APIs. |
| 552 | Who: Samuel Ortiz <sameo@linux.intel.com> |
| 553 | |
| 554 | ---------------------------- |
| 555 | |
Sasikantha babu | aa2bf9b | 2012-03-21 20:10:54 +0530 | [diff] [blame] | 556 | What: setitimer accepts user NULL pointer (value) |
| 557 | When: 3.6 |
| 558 | Why: setitimer is not returning -EFAULT if user pointer is NULL. This |
| 559 | violates the spec. |
| 560 | Who: Sasikantha Babu <sasikanth.v19@gmail.com> |
Sylwester Nawrocki | 5694e02 | 2012-04-21 14:11:06 -0300 | [diff] [blame] | 561 | |
| 562 | ---------------------------- |
| 563 | |
Hans Verkuil | f2b9e8a | 2012-04-24 10:30:15 -0300 | [diff] [blame] | 564 | What: remove bogus DV presets V4L2_DV_1080I29_97, V4L2_DV_1080I30 and |
| 565 | V4L2_DV_1080I25 |
| 566 | When: 3.6 |
| 567 | Why: These HDTV formats do not exist and were added by a confused mind |
| 568 | (that was me, to be precise...) |
| 569 | Who: Hans Verkuil <hans.verkuil@cisco.com> |
| 570 | |
| 571 | ---------------------------- |
| 572 | |
Sylwester Nawrocki | 5694e02 | 2012-04-21 14:11:06 -0300 | [diff] [blame] | 573 | What: V4L2_CID_HCENTER, V4L2_CID_VCENTER V4L2 controls |
| 574 | When: 3.7 |
| 575 | Why: The V4L2_CID_VCENTER, V4L2_CID_HCENTER controls have been deprecated |
| 576 | for about 4 years and they are not used by any mainline driver. |
| 577 | There are newer controls (V4L2_CID_PAN*, V4L2_CID_TILT*) that provide |
| 578 | similar functionality. |
| 579 | Who: Sylwester Nawrocki <sylvester.nawrocki@gmail.com> |
Linus Torvalds | 88d6ae8d | 2012-05-22 17:40:19 -0700 | [diff] [blame] | 580 | |
| 581 | ---------------------------- |
| 582 | |
Tejun Heo | 8b5a5a9 | 2012-04-01 12:09:54 -0700 | [diff] [blame] | 583 | What: cgroup option updates via remount |
| 584 | When: March 2013 |
| 585 | Why: Remount currently allows changing bound subsystems and |
| 586 | release_agent. Rebinding is hardly useful as it only works |
| 587 | when the hierarchy is empty and release_agent itself should be |
| 588 | replaced with conventional fsnotify. |
Linus Torvalds | 88d6ae8d | 2012-05-22 17:40:19 -0700 | [diff] [blame] | 589 | |
| 590 | ---------------------------- |
Linus Torvalds | 07acfc2 | 2012-05-24 16:17:30 -0700 | [diff] [blame] | 591 | |
Avi Kivity | 66ef893 | 2012-04-08 12:47:32 +0300 | [diff] [blame] | 592 | What: KVM debugfs statistics |
| 593 | When: 2013 |
| 594 | Why: KVM tracepoints provide mostly equivalent information in a much more |
| 595 | flexible fashion. |
Marcelo Tosatti | eac0556 | 2012-04-19 17:06:26 -0300 | [diff] [blame] | 596 | |
Linus Torvalds | 07acfc2 | 2012-05-24 16:17:30 -0700 | [diff] [blame] | 597 | ---------------------------- |
Linus Torvalds | 92bf3d0 | 2012-05-25 08:23:32 -0700 | [diff] [blame] | 598 | |
Ludovic Desroches | 0caaa95 | 2012-05-16 17:51:59 +0200 | [diff] [blame] | 599 | What: at91-mci driver ("CONFIG_MMC_AT91") |
| 600 | When: 3.7 |
| 601 | Why: There are two mci drivers: at91-mci and atmel-mci. The PDC support |
| 602 | was added to atmel-mci as a first step to support more chips. |
| 603 | Then at91-mci was kept only for old IP versions (on at91rm9200 and |
| 604 | at91sam9261). The support of these IP versions has just been added |
| 605 | to atmel-mci, so atmel-mci can be used for all chips. |
| 606 | Who: Ludovic Desroches <ludovic.desroches@atmel.com> |
Linus Torvalds | 92bf3d0 | 2012-05-25 08:23:32 -0700 | [diff] [blame] | 607 | |
| 608 | ---------------------------- |
Linus Torvalds | 13199a0 | 2012-05-31 10:32:36 -0700 | [diff] [blame] | 609 | |
Joe Perches | f0d1b3c | 2012-05-24 07:13:30 +0000 | [diff] [blame] | 610 | What: net/wanrouter/ |
| 611 | When: June 2013 |
| 612 | Why: Unsupported/unmaintained/unused since 2.6 |
| 613 | |
| 614 | ---------------------------- |