Commit | Line | Data |
---|---|---|
1da177e4 LT |
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 | ||
4d8cd268 LR |
9 | What: PRISM54 |
10 | When: 2.6.34 | |
11 | ||
12 | Why: prism54 FullMAC PCI / Cardbus devices used to be supported only by the | |
13 | prism54 wireless driver. After Intersil stopped selling these | |
14 | devices in preference for the newer more flexible SoftMAC devices | |
15 | a SoftMAC device driver was required and prism54 did not support | |
16 | them. The p54pci driver now exists and has been present in the kernel for | |
17 | a while. This driver supports both SoftMAC devices and FullMAC devices. | |
18 | The main difference between these devices was the amount of memory which | |
19 | could be used for the firmware. The SoftMAC devices support a smaller | |
20 | amount of memory. Because of this the SoftMAC firmware fits into FullMAC | |
21 | devices's memory. p54pci supports not only PCI / Cardbus but also USB | |
22 | and SPI. Since p54pci supports all devices prism54 supports | |
23 | you will have a conflict. I'm not quite sure how distributions are | |
24 | handling this conflict right now. prism54 was kept around due to | |
25 | claims users may experience issues when using the SoftMAC driver. | |
26 | Time has passed users have not reported issues. If you use prism54 | |
27 | and for whatever reason you cannot use p54pci please let us know! | |
28 | E-mail us at: linux-wireless@vger.kernel.org | |
29 | ||
30 | For more information see the p54 wiki page: | |
31 | ||
32 | http://wireless.kernel.org/en/users/Drivers/p54 | |
33 | ||
34 | Who: Luis R. Rodriguez <lrodriguez@atheros.com> | |
35 | ||
36 | --------------------------- | |
37 | ||
9d9b8fb0 RG |
38 | What: IRQF_SAMPLE_RANDOM |
39 | Check: IRQF_SAMPLE_RANDOM | |
40 | When: July 2009 | |
41 | ||
42 | Why: Many of IRQF_SAMPLE_RANDOM users are technically bogus as entropy | |
43 | sources in the kernel's current entropy model. To resolve this, every | |
44 | input point to the kernel's entropy pool needs to better document the | |
45 | type of entropy source it actually is. This will be replaced with | |
46 | additional add_*_randomness functions in drivers/char/random.c | |
47 | ||
48 | Who: Robin Getz <rgetz@blackfin.uclinux.org> & Matt Mackall <mpm@selenic.com> | |
49 | ||
50 | --------------------------- | |
51 | ||
b694e52e JS |
52 | What: Deprecated snapshot ioctls |
53 | When: 2.6.36 | |
54 | ||
55 | Why: The ioctls in kernel/power/user.c were marked as deprecated long time | |
56 | ago. Now they notify users about that so that they need to replace | |
57 | their userspace. After some more time, remove them completely. | |
58 | ||
59 | Who: Jiri Slaby <jirislaby@gmail.com> | |
60 | ||
61 | --------------------------- | |
62 | ||
6ee7d330 | 63 | What: The ieee80211_regdom module parameter |
8a5117d8 | 64 | When: March 2010 / desktop catchup |
6ee7d330 LR |
65 | |
66 | Why: This was inherited by the CONFIG_WIRELESS_OLD_REGULATORY code, | |
67 | and currently serves as an option for users to define an | |
68 | ISO / IEC 3166 alpha2 code for the country they are currently | |
69 | present in. Although there are userspace API replacements for this | |
70 | through nl80211 distributions haven't yet caught up with implementing | |
71 | decent alternatives through standard GUIs. Although available as an | |
72 | option through iw or wpa_supplicant its just a matter of time before | |
73 | distributions pick up good GUI options for this. The ideal solution | |
74 | would actually consist of intelligent designs which would do this for | |
75 | the user automatically even when travelling through different countries. | |
76 | Until then we leave this module parameter as a compromise. | |
77 | ||
78 | When userspace improves with reasonable widely-available alternatives for | |
79 | this we will no longer need this module parameter. This entry hopes that | |
80 | by the super-futuristically looking date of "March 2010" we will have | |
81 | such replacements widely available. | |
82 | ||
83 | Who: Luis R. Rodriguez <lrodriguez@atheros.com> | |
84 | ||
85 | --------------------------- | |
86 | ||
471d0558 | 87 | What: dev->power.power_state |
1ebfd79e PM |
88 | When: July 2007 |
89 | Why: Broken design for runtime control over driver power states, confusing | |
90 | driver-internal runtime power management with: mechanisms to support | |
91 | system-wide sleep state transitions; event codes that distinguish | |
92 | different phases of swsusp "sleep" transitions; and userspace policy | |
93 | inputs. This framework was never widely used, and most attempts to | |
94 | use it were broken. Drivers should instead be exposing domain-specific | |
95 | interfaces either to kernel or to userspace. | |
a2531293 | 96 | Who: Pavel Machek <pavel@ucw.cz> |
1ebfd79e PM |
97 | |
98 | --------------------------- | |
99 | ||
42d12f5a | 100 | What: Video4Linux API 1 ioctls and from Video devices. |
7af97eff | 101 | When: kernel 2.6.38 |
42d12f5a MCC |
102 | Files: include/linux/videodev.h |
103 | Check: include/linux/videodev.h | |
11a5a10e | 104 | Why: V4L1 AP1 was replaced by V4L2 API during migration from 2.4 to 2.6 |
875c296b MCC |
105 | series. The old API have lots of drawbacks and don't provide enough |
106 | means to work with all video and audio standards. The newer API is | |
107 | already available on the main drivers and should be used instead. | |
108 | Newer drivers should use v4l_compat_translate_ioctl function to handle | |
109 | old calls, replacing to newer ones. | |
110 | Decoder iocts are using internally to allow video drivers to | |
111 | communicate with video decoders. This should also be improved to allow | |
112 | V4L2 calls being translated into compatible internal ioctls. | |
11a5a10e MCC |
113 | Compatibility ioctls will be provided, for a while, via |
114 | v4l1-compat module. | |
115 | Who: Mauro Carvalho Chehab <mchehab@infradead.org> | |
875c296b MCC |
116 | |
117 | --------------------------- | |
7af4cc3f | 118 | |
7af97eff MCC |
119 | What: Video4Linux obsolete drivers using V4L1 API |
120 | When: kernel 2.6.38 | |
96322b80 MCC |
121 | Files: drivers/staging/cpia/* drivers/staging/stradis/* |
122 | Check: drivers/staging/cpia/cpia.c drivers/staging/stradis/stradis.c | |
7af97eff MCC |
123 | Why: There are some drivers still using V4L1 API, despite all efforts we've done |
124 | to migrate. Those drivers are for obsolete hardware that the old maintainer | |
125 | didn't care (or not have the hardware anymore), and that no other developer | |
126 | could find any hardware to buy. They probably have no practical usage today, | |
127 | and people with such old hardware could probably keep using an older version | |
128 | of the kernel. Those drivers will be moved to staging on 2.6.37 and, if nobody | |
129 | care enough to port and test them with V4L2 API, they'll be removed on 2.6.38. | |
130 | Who: Mauro Carvalho Chehab <mchehab@infradead.org> | |
131 | ||
132 | --------------------------- | |
133 | ||
7058cb02 EB |
134 | What: sys_sysctl |
135 | When: September 2010 | |
136 | Option: CONFIG_SYSCTL_SYSCALL | |
137 | Why: The same information is available in a more convenient from | |
138 | /proc/sys, and none of the sysctl variables appear to be | |
139 | important performance wise. | |
140 | ||
141 | Binary sysctls are a long standing source of subtle kernel | |
142 | bugs and security issues. | |
143 | ||
144 | When I looked several months ago all I could find after | |
145 | searching several distributions were 5 user space programs and | |
146 | glibc (which falls back to /proc/sys) using this syscall. | |
147 | ||
148 | The man page for sysctl(2) documents it as unusable for user | |
149 | space programs. | |
150 | ||
151 | sysctl(2) is not generally ABI compatible to a 32bit user | |
152 | space application on a 64bit and a 32bit kernel. | |
153 | ||
154 | For the last several months the policy has been no new binary | |
155 | sysctls and no one has put forward an argument to use them. | |
156 | ||
157 | Binary sysctls issues seem to keep happening appearing so | |
158 | properly deprecating them (with a warning to user space) and a | |
159 | 2 year grace warning period will mean eventually we can kill | |
160 | them and end the pain. | |
161 | ||
162 | In the mean time individual binary sysctls can be dealt with | |
163 | in a piecewise fashion. | |
164 | ||
165 | Who: Eric Biederman <ebiederm@xmission.com> | |
166 | ||
167 | --------------------------- | |
168 | ||
51b1bd2a DR |
169 | What: /proc/<pid>/oom_adj |
170 | When: August 2012 | |
171 | Why: /proc/<pid>/oom_adj allows userspace to influence the oom killer's | |
172 | badness heuristic used to determine which task to kill when the kernel | |
173 | is out of memory. | |
174 | ||
175 | The badness heuristic has since been rewritten since the introduction of | |
176 | this tunable such that its meaning is deprecated. The value was | |
177 | implemented as a bitshift on a score generated by the badness() | |
178 | function that did not have any precise units of measure. With the | |
179 | rewrite, the score is given as a proportion of available memory to the | |
180 | task allocating pages, so using a bitshift which grows the score | |
181 | exponentially is, thus, impossible to tune with fine granularity. | |
182 | ||
183 | A much more powerful interface, /proc/<pid>/oom_score_adj, was | |
184 | introduced with the oom killer rewrite that allows users to increase or | |
185 | decrease the badness() score linearly. This interface will replace | |
186 | /proc/<pid>/oom_adj. | |
187 | ||
188 | A warning will be emitted to the kernel log if an application uses this | |
189 | deprecated interface. After it is printed once, future warnings will be | |
190 | suppressed until the kernel is rebooted. | |
191 | ||
192 | --------------------------- | |
193 | ||
ac515898 CH |
194 | What: remove EXPORT_SYMBOL(kernel_thread) |
195 | When: August 2006 | |
196 | Files: arch/*/kernel/*_ksyms.c | |
f0a594c1 | 197 | Check: kernel_thread |
ac515898 CH |
198 | Why: kernel_thread is a low-level implementation detail. Drivers should |
199 | use the <linux/kthread.h> API instead which shields them from | |
200 | implementation details and provides a higherlevel interface that | |
201 | prevents bugs and code duplication | |
202 | Who: Christoph Hellwig <hch@lst.de> | |
203 | ||
204 | --------------------------- | |
205 | ||
f71d20e9 AV |
206 | What: Unused EXPORT_SYMBOL/EXPORT_SYMBOL_GPL exports |
207 | (temporary transition config option provided until then) | |
208 | The transition config option will also be removed at the same time. | |
209 | When: before 2.6.19 | |
210 | Why: Unused symbols are both increasing the size of the kernel binary | |
211 | and are often a sign of "wrong API" | |
212 | Who: Arjan van de Ven <arjan@linux.intel.com> | |
213 | ||
214 | --------------------------- | |
215 | ||
d81d9d6b | 216 | What: PHYSDEVPATH, PHYSDEVBUS, PHYSDEVDRIVER in the uevent environment |
acbd39fb | 217 | When: October 2008 |
d81d9d6b KS |
218 | Why: The stacking of class devices makes these values misleading and |
219 | inconsistent. | |
220 | Class devices should not carry any of these properties, and bus | |
221 | devices have SUBSYTEM and DRIVER as a replacement. | |
222 | Who: Kay Sievers <kay.sievers@suse.de> | |
223 | ||
224 | --------------------------- | |
6c805d2c | 225 | |
b981c591 | 226 | What: ACPI procfs interface |
8b8eb7d8 ZR |
227 | When: July 2008 |
228 | Why: ACPI sysfs conversion should be finished by January 2008. | |
229 | ACPI procfs interface will be removed in July 2008 so that | |
230 | there is enough time for the user space to catch up. | |
b981c591 ZR |
231 | Who: Zhang Rui <rui.zhang@intel.com> |
232 | ||
233 | --------------------------- | |
234 | ||
1bb67c25 LB |
235 | What: /proc/acpi/button |
236 | When: August 2007 | |
237 | Why: /proc/acpi/button has been replaced by events to the input layer | |
238 | since 2.6.20. | |
239 | Who: Len Brown <len.brown@intel.com> | |
240 | ||
241 | --------------------------- | |
54b290a2 | 242 | |
14e04fb3 LB |
243 | What: /proc/acpi/event |
244 | When: February 2008 | |
245 | Why: /proc/acpi/event has been replaced by events via the input layer | |
246 | and netlink since 2.6.23. | |
247 | Who: Len Brown <len.brown@intel.com> | |
248 | ||
249 | --------------------------- | |
250 | ||
914d97fd | 251 | What: i386/x86_64 bzImage symlinks |
19b4e7f4 | 252 | When: April 2010 |
914d97fd TG |
253 | |
254 | Why: The i386/x86_64 merge provides a symlink to the old bzImage | |
255 | location so not yet updated user space tools, e.g. package | |
256 | scripts, do not break. | |
257 | Who: Thomas Gleixner <tglx@linutronix.de> | |
038a5008 LT |
258 | |
259 | --------------------------- | |
260 | ||
8a0cecff DB |
261 | What: GPIO autorequest on gpio_direction_{input,output}() in gpiolib |
262 | When: February 2010 | |
263 | Why: All callers should use explicit gpio_request()/gpio_free(). | |
264 | The autorequest mechanism in gpiolib was provided mostly as a | |
265 | migration aid for legacy GPIO interfaces (for SOC based GPIOs). | |
266 | Those users have now largely migrated. Platforms implementing | |
267 | the GPIO interfaces without using gpiolib will see no changes. | |
268 | Who: David Brownell <dbrownell@users.sourceforge.net> | |
269 | --------------------------- | |
270 | ||
eb189d8b | 271 | What: b43 support for firmware revision < 410 |
c557289c MB |
272 | When: The schedule was July 2008, but it was decided that we are going to keep the |
273 | code as long as there are no major maintanance headaches. | |
274 | So it _could_ be removed _any_ time now, if it conflicts with something new. | |
eb189d8b MB |
275 | Why: The support code for the old firmware hurts code readability/maintainability |
276 | and slightly hurts runtime performance. Bugfixes for the old firmware | |
277 | are not provided by Broadcom anymore. | |
278 | Who: Michael Buesch <mb@bu3sch.de> | |
e88bb415 DM |
279 | |
280 | --------------------------- | |
281 | ||
52f7c21b MF |
282 | What: /sys/o2cb symlink |
283 | When: January 2010 | |
284 | Why: /sys/fs/o2cb is the proper location for this information - /sys/o2cb | |
285 | exists as a symlink for backwards compatibility for old versions of | |
286 | ocfs2-tools. 2 years should be sufficient time to phase in new versions | |
287 | which know to look in /sys/fs/o2cb. | |
288 | Who: ocfs2-devel@oss.oracle.com | |
d2f5e808 MW |
289 | |
290 | --------------------------- | |
291 | ||
2584e517 RT |
292 | What: Ability for non root users to shm_get hugetlb pages based on mlock |
293 | resource limits | |
294 | When: 2.6.31 | |
295 | Why: Non root users need to be part of /proc/sys/vm/hugetlb_shm_group or | |
296 | have CAP_IPC_LOCK to be able to allocate shm segments backed by | |
297 | huge pages. The mlock based rlimit check to allow shm hugetlb is | |
298 | inconsistent with mmap based allocations. Hence it is being | |
299 | deprecated. | |
300 | Who: Ravikiran Thirumalai <kiran@scalex86.org> | |
301 | ||
302 | --------------------------- | |
303 | ||
16d75239 RH |
304 | What: CONFIG_THERMAL_HWMON |
305 | When: January 2009 | |
306 | Why: This option was introduced just to allow older lm-sensors userspace | |
307 | to keep working over the upgrade to 2.6.26. At the scheduled time of | |
308 | removal fixed lm-sensors (2.x or 3.x) should be readily available. | |
309 | Who: Rene Herman <rene.herman@gmail.com> | |
22bb1be4 JB |
310 | |
311 | --------------------------- | |
312 | ||
313 | What: Code that is now under CONFIG_WIRELESS_EXT_SYSFS | |
314 | (in net/core/net-sysfs.c) | |
315 | When: After the only user (hal) has seen a release with the patches | |
316 | for enough time, probably some time in 2010. | |
317 | Why: Over 1K .text/.data size reduction, data is available in other | |
318 | ways (ioctls) | |
319 | Who: Johannes Berg <johannes@sipsolutions.net> | |
58401572 KPO |
320 | |
321 | --------------------------- | |
322 | ||
753b7aea DJ |
323 | What: sysfs ui for changing p4-clockmod parameters |
324 | When: September 2009 | |
325 | Why: See commits 129f8ae9b1b5be94517da76009ea956e89104ce8 and | |
326 | e088e4c9cdb618675874becb91b2fd581ee707e6. | |
327 | Removal is subject to fixing any remaining bugs in ACPI which may | |
328 | cause the thermal throttling not to happen at the right time. | |
329 | Who: Dave Jones <davej@redhat.com>, Matthew Garrett <mjg@redhat.com> | |
0e57aa11 TG |
330 | |
331 | ----------------------------- | |
332 | ||
333 | What: __do_IRQ all in one fits nothing interrupt handler | |
334 | When: 2.6.32 | |
335 | Why: __do_IRQ was kept for easy migration to the type flow handlers. | |
336 | More than two years of migration time is enough. | |
337 | Who: Thomas Gleixner <tglx@linutronix.de> | |
cb065c06 TG |
338 | |
339 | ----------------------------- | |
340 | ||
f110ca48 AC |
341 | What: fakephp and associated sysfs files in /sys/bus/pci/slots/ |
342 | When: 2011 | |
343 | Why: In 2.6.27, the semantics of /sys/bus/pci/slots was redefined to | |
344 | represent a machine's physical PCI slots. The change in semantics | |
345 | had userspace implications, as the hotplug core no longer allowed | |
346 | drivers to create multiple sysfs files per physical slot (required | |
347 | for multi-function devices, e.g.). fakephp was seen as a developer's | |
348 | tool only, and its interface changed. Too late, we learned that | |
349 | there were some users of the fakephp interface. | |
350 | ||
351 | In 2.6.30, the original fakephp interface was restored. At the same | |
352 | time, the PCI core gained the ability that fakephp provided, namely | |
353 | function-level hot-remove and hot-add. | |
354 | ||
355 | Since the PCI core now provides the same functionality, exposed in: | |
356 | ||
357 | /sys/bus/pci/rescan | |
358 | /sys/bus/pci/devices/.../remove | |
359 | /sys/bus/pci/devices/.../rescan | |
360 | ||
361 | there is no functional reason to maintain fakephp as well. | |
362 | ||
363 | We will keep the existing module so that 'modprobe fakephp' will | |
364 | present the old /sys/bus/pci/slots/... interface for compatibility, | |
365 | but users are urged to migrate their applications to the API above. | |
366 | ||
367 | After a reasonable transition period, we will remove the legacy | |
368 | fakephp interface. | |
369 | Who: Alex Chiang <achiang@hp.com> | |
3f307fb3 JD |
370 | |
371 | --------------------------- | |
372 | ||
c64fb016 JB |
373 | What: CONFIG_RFKILL_INPUT |
374 | When: 2.6.33 | |
375 | Why: Should be implemented in userspace, policy daemon. | |
376 | Who: Johannes Berg <johannes@sipsolutions.net> | |
9cbc1cb8 | 377 | |
45f458e9 | 378 | ---------------------------- |
93fe4483 TH |
379 | |
380 | What: sound-slot/service-* module aliases and related clutters in | |
381 | sound/sound_core.c | |
382 | When: August 2010 | |
383 | Why: OSS sound_core grabs all legacy minors (0-255) of SOUND_MAJOR | |
384 | (14) and requests modules using custom sound-slot/service-* | |
385 | module aliases. The only benefit of doing this is allowing | |
386 | use of custom module aliases which might as well be considered | |
387 | a bug at this point. This preemptive claiming prevents | |
388 | alternative OSS implementations. | |
389 | ||
390 | Till the feature is removed, the kernel will be requesting | |
391 | both sound-slot/service-* and the standard char-major-* module | |
392 | aliases and allow turning off the pre-claiming selectively via | |
393 | CONFIG_SOUND_OSS_CORE_PRECLAIM and soundcore.preclaim_oss | |
394 | kernel parameter. | |
395 | ||
396 | After the transition phase is complete, both the custom module | |
397 | aliases and switches to disable it will go away. This removal | |
398 | will also allow making ALSA OSS emulation independent of | |
399 | sound_core. The dependency will be broken then too. | |
400 | Who: Tejun Heo <tj@kernel.org> | |
d0153ca3 AK |
401 | |
402 | ---------------------------- | |
403 | ||
728900f6 CC |
404 | What: Support for lcd_switch and display_get in asus-laptop driver |
405 | When: March 2010 | |
406 | Why: These two features use non-standard interfaces. There are the | |
407 | only features that really need multiple path to guess what's | |
408 | the right method name on a specific laptop. | |
409 | ||
410 | Removing them will allow to remove a lot of code an significantly | |
411 | clean the drivers. | |
412 | ||
413 | This will affect the backlight code which won't be able to know | |
414 | if the backlight is on or off. The platform display file will also be | |
415 | write only (like the one in eeepc-laptop). | |
416 | ||
417 | This should'nt affect a lot of user because they usually know | |
418 | when their display is on or off. | |
419 | ||
420 | Who: Corentin Chary <corentin.chary@gmail.com> | |
421 | ||
422 | ---------------------------- | |
ceafe1d2 | 423 | |
69c86373 | 424 | What: sysfs-class-rfkill state file |
425 | When: Feb 2014 | |
426 | Files: net/rfkill/core.c | |
427 | Why: Documented as obsolete since Feb 2010. This file is limited to 3 | |
428 | states while the rfkill drivers can have 4 states. | |
429 | Who: anybody or Florian Mickler <florian@mickler.org> | |
430 | ||
431 | ---------------------------- | |
432 | ||
433 | What: sysfs-class-rfkill claim file | |
434 | When: Feb 2012 | |
435 | Files: net/rfkill/core.c | |
436 | Why: It is not possible to claim an rfkill driver since 2007. This is | |
437 | Documented as obsolete since Feb 2010. | |
438 | Who: anybody or Florian Mickler <florian@mickler.org> | |
439 | ||
440 | ---------------------------- | |
441 | ||
79e95f47 JK |
442 | What: capifs |
443 | When: February 2011 | |
444 | Files: drivers/isdn/capi/capifs.* | |
445 | Why: udev fully replaces this special file system that only contains CAPI | |
446 | NCCI TTY device nodes. User space (pppdcapiplugin) works without | |
447 | noticing the difference. | |
448 | Who: Jan Kiszka <jan.kiszka@web.de> | |
c812a51d LT |
449 | |
450 | ---------------------------- | |
451 | ||
db358796 AK |
452 | What: KVM paravirt mmu host support |
453 | When: January 2011 | |
454 | Why: The paravirt mmu host support is slower than non-paravirt mmu, both | |
455 | on newer and older hardware. It is already not exposed to the guest, | |
456 | and kept only for live migration purposes. | |
457 | Who: Avi Kivity <avi@redhat.com> | |
c812a51d LT |
458 | |
459 | ---------------------------- | |
4c81ba49 | 460 | |
2b068618 WYG |
461 | What: iwlwifi 50XX module parameters |
462 | When: 2.6.40 | |
463 | Why: The "..50" modules parameters were used to configure 5000 series and | |
464 | up devices; different set of module parameters also available for 4965 | |
465 | with same functionalities. Consolidate both set into single place | |
466 | in drivers/net/wireless/iwlwifi/iwl-agn.c | |
467 | ||
468 | Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> | |
d34a5a62 WYG |
469 | |
470 | ---------------------------- | |
471 | ||
472 | What: iwl4965 alias support | |
473 | When: 2.6.40 | |
474 | Why: Internal alias support has been present in module-init-tools for some | |
475 | time, the MODULE_ALIAS("iwl4965") boilerplate aliases can be removed | |
476 | with no impact. | |
477 | ||
478 | Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> | |
62910554 | 479 | |
0cb47ea2 JE |
480 | --------------------------- |
481 | ||
482 | What: xt_NOTRACK | |
483 | Files: net/netfilter/xt_NOTRACK.c | |
484 | When: April 2011 | |
485 | Why: Superseded by xt_CT | |
486 | Who: Netfilter developer team <netfilter-devel@vger.kernel.org> | |
278554bd | 487 | |
6e0b7b2c LT |
488 | ---------------------------- |
489 | ||
6932bf37 TG |
490 | What: IRQF_DISABLED |
491 | When: 2.6.36 | |
492 | Why: The flag is a NOOP as we run interrupt handlers with interrupts disabled | |
493 | Who: Thomas Gleixner <tglx@linutronix.de> | |
6e0b7b2c LT |
494 | |
495 | ---------------------------- | |
496 | ||
72ad5d77 RW |
497 | What: The acpi_sleep=s4_nonvs command line option |
498 | When: 2.6.37 | |
499 | Files: arch/x86/kernel/acpi/sleep.c | |
500 | Why: superseded by acpi_sleep=nonvs | |
501 | Who: Rafael J. Wysocki <rjw@sisk.pl> | |
502 | ||
503 | ---------------------------- | |
17583363 FT |
504 | |
505 | What: PCI DMA unmap state API | |
506 | When: August 2012 | |
507 | Why: PCI DMA unmap state API (include/linux/pci-dma.h) was replaced | |
508 | with DMA unmap state API (DMA unmap state API can be used for | |
509 | any bus). | |
510 | Who: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | |
511 | ||
512 | ---------------------------- | |
a35274cd FT |
513 | |
514 | What: DMA_xxBIT_MASK macros | |
515 | When: Jun 2011 | |
516 | Why: DMA_xxBIT_MASK macros were replaced with DMA_BIT_MASK() macros. | |
517 | Who: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | |
518 | ||
519 | ---------------------------- | |
520 | ||
45531757 DL |
521 | What: namespace cgroup (ns_cgroup) |
522 | When: 2.6.38 | |
523 | Why: The ns_cgroup leads to some problems: | |
524 | * cgroup creation is out-of-control | |
525 | * cgroup name can conflict when pids are looping | |
526 | * it is not possible to have a single process handling | |
527 | a lot of namespaces without falling in a exponential creation time | |
528 | * we may want to create a namespace without creating a cgroup | |
529 | ||
530 | The ns_cgroup is replaced by a compatibility flag 'clone_children', | |
531 | where a newly created cgroup will copy the parent cgroup values. | |
532 | The userspace has to manually create a cgroup and add a task to | |
533 | the 'tasks' file. | |
534 | Who: Daniel Lezcano <daniel.lezcano@free.fr> | |
535 | ||
536 | ---------------------------- | |
537 | ||
72645eff WYG |
538 | What: iwlwifi disable_hw_scan module parameters |
539 | When: 2.6.40 | |
540 | Why: Hareware scan is the prefer method for iwlwifi devices for | |
541 | scanning operation. Remove software scan support for all the | |
542 | iwlwifi devices. | |
543 | ||
544 | Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> | |
545 | ||
546 | ---------------------------- | |
4390110f | 547 | |
c67874f9 N |
548 | What: access to nfsd auth cache through sys_nfsservctl or '.' files |
549 | in the 'nfsd' filesystem. | |
550 | When: 2.6.40 | |
551 | Why: This is a legacy interface which have been replaced by a more | |
552 | dynamic cache. Continuing to maintain this interface is an | |
553 | unnecessary burden. | |
554 | Who: NeilBrown <neilb@suse.de> | |
555 | ||
556 | ---------------------------- |