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 | ||
7af97eff | 100 | What: Video4Linux obsolete drivers using V4L1 API |
439105b1 HV |
101 | When: kernel 2.6.39 |
102 | Files: drivers/staging/se401/* drivers/staging/usbvideo/* | |
103 | Check: drivers/staging/se401/se401.c drivers/staging/usbvideo/usbvideo.c | |
7af97eff MCC |
104 | Why: There are some drivers still using V4L1 API, despite all efforts we've done |
105 | to migrate. Those drivers are for obsolete hardware that the old maintainer | |
106 | didn't care (or not have the hardware anymore), and that no other developer | |
107 | could find any hardware to buy. They probably have no practical usage today, | |
108 | and people with such old hardware could probably keep using an older version | |
439105b1 HV |
109 | of the kernel. Those drivers will be moved to staging on 2.6.38 and, if nobody |
110 | cares enough to port and test them with V4L2 API, they'll be removed on 2.6.39. | |
7af97eff MCC |
111 | Who: Mauro Carvalho Chehab <mchehab@infradead.org> |
112 | ||
113 | --------------------------- | |
1035758d MCC |
114 | |
115 | What: Video4Linux: Remove obsolete ioctl's | |
116 | When: kernel 2.6.39 | |
117 | Files: include/media/videodev2.h | |
118 | Why: Some ioctl's were defined wrong on 2.6.2 and 2.6.6, using the wrong | |
119 | type of R/W arguments. They were fixed, but the old ioctl names are | |
120 | still there, maintained to avoid breaking binary compatibility: | |
121 | #define VIDIOC_OVERLAY_OLD _IOWR('V', 14, int) | |
122 | #define VIDIOC_S_PARM_OLD _IOW('V', 22, struct v4l2_streamparm) | |
123 | #define VIDIOC_S_CTRL_OLD _IOW('V', 28, struct v4l2_control) | |
124 | #define VIDIOC_G_AUDIO_OLD _IOWR('V', 33, struct v4l2_audio) | |
125 | #define VIDIOC_G_AUDOUT_OLD _IOWR('V', 49, struct v4l2_audioout) | |
126 | #define VIDIOC_CROPCAP_OLD _IOR('V', 58, struct v4l2_cropcap) | |
127 | There's no sense on preserving those forever, as it is very doubtful | |
128 | that someone would try to use a such old binary with a modern kernel. | |
129 | Removing them will allow us to remove some magic done at the V4L ioctl | |
130 | handler. | |
131 | ||
132 | Who: Mauro Carvalho Chehab <mchehab@infradead.org> | |
133 | ||
134 | --------------------------- | |
7af97eff | 135 | |
7058cb02 EB |
136 | What: sys_sysctl |
137 | When: September 2010 | |
138 | Option: CONFIG_SYSCTL_SYSCALL | |
139 | Why: The same information is available in a more convenient from | |
140 | /proc/sys, and none of the sysctl variables appear to be | |
141 | important performance wise. | |
142 | ||
143 | Binary sysctls are a long standing source of subtle kernel | |
144 | bugs and security issues. | |
145 | ||
146 | When I looked several months ago all I could find after | |
147 | searching several distributions were 5 user space programs and | |
148 | glibc (which falls back to /proc/sys) using this syscall. | |
149 | ||
150 | The man page for sysctl(2) documents it as unusable for user | |
151 | space programs. | |
152 | ||
153 | sysctl(2) is not generally ABI compatible to a 32bit user | |
154 | space application on a 64bit and a 32bit kernel. | |
155 | ||
156 | For the last several months the policy has been no new binary | |
157 | sysctls and no one has put forward an argument to use them. | |
158 | ||
159 | Binary sysctls issues seem to keep happening appearing so | |
160 | properly deprecating them (with a warning to user space) and a | |
161 | 2 year grace warning period will mean eventually we can kill | |
162 | them and end the pain. | |
163 | ||
164 | In the mean time individual binary sysctls can be dealt with | |
165 | in a piecewise fashion. | |
166 | ||
167 | Who: Eric Biederman <ebiederm@xmission.com> | |
168 | ||
169 | --------------------------- | |
170 | ||
51b1bd2a DR |
171 | What: /proc/<pid>/oom_adj |
172 | When: August 2012 | |
173 | Why: /proc/<pid>/oom_adj allows userspace to influence the oom killer's | |
174 | badness heuristic used to determine which task to kill when the kernel | |
175 | is out of memory. | |
176 | ||
177 | The badness heuristic has since been rewritten since the introduction of | |
178 | this tunable such that its meaning is deprecated. The value was | |
179 | implemented as a bitshift on a score generated by the badness() | |
180 | function that did not have any precise units of measure. With the | |
181 | rewrite, the score is given as a proportion of available memory to the | |
182 | task allocating pages, so using a bitshift which grows the score | |
183 | exponentially is, thus, impossible to tune with fine granularity. | |
184 | ||
185 | A much more powerful interface, /proc/<pid>/oom_score_adj, was | |
186 | introduced with the oom killer rewrite that allows users to increase or | |
187 | decrease the badness() score linearly. This interface will replace | |
188 | /proc/<pid>/oom_adj. | |
189 | ||
190 | A warning will be emitted to the kernel log if an application uses this | |
191 | deprecated interface. After it is printed once, future warnings will be | |
192 | suppressed until the kernel is rebooted. | |
193 | ||
194 | --------------------------- | |
cf8e9086 AS |
195 | |
196 | What: CS5535/CS5536 obsolete GPIO driver | |
197 | When: June 2011 | |
198 | Files: drivers/staging/cs5535_gpio/* | |
199 | Check: drivers/staging/cs5535_gpio/cs5535_gpio.c | |
200 | Why: A newer driver replaces this; it is drivers/gpio/cs5535-gpio.c, and | |
201 | integrates with the Linux GPIO subsystem. The old driver has been | |
202 | moved to staging, and will be removed altogether around 2.6.40. | |
203 | Please test the new driver, and ensure that the functionality you | |
204 | need and any bugfixes from the old driver are available in the new | |
205 | one. | |
206 | Who: Andres Salomon <dilinger@queued.net> | |
207 | ||
208 | -------------------------- | |
51b1bd2a | 209 | |
ac515898 CH |
210 | What: remove EXPORT_SYMBOL(kernel_thread) |
211 | When: August 2006 | |
212 | Files: arch/*/kernel/*_ksyms.c | |
f0a594c1 | 213 | Check: kernel_thread |
ac515898 CH |
214 | Why: kernel_thread is a low-level implementation detail. Drivers should |
215 | use the <linux/kthread.h> API instead which shields them from | |
216 | implementation details and provides a higherlevel interface that | |
217 | prevents bugs and code duplication | |
218 | Who: Christoph Hellwig <hch@lst.de> | |
219 | ||
220 | --------------------------- | |
221 | ||
f71d20e9 AV |
222 | What: Unused EXPORT_SYMBOL/EXPORT_SYMBOL_GPL exports |
223 | (temporary transition config option provided until then) | |
224 | The transition config option will also be removed at the same time. | |
225 | When: before 2.6.19 | |
226 | Why: Unused symbols are both increasing the size of the kernel binary | |
227 | and are often a sign of "wrong API" | |
228 | Who: Arjan van de Ven <arjan@linux.intel.com> | |
229 | ||
230 | --------------------------- | |
231 | ||
d81d9d6b | 232 | What: PHYSDEVPATH, PHYSDEVBUS, PHYSDEVDRIVER in the uevent environment |
acbd39fb | 233 | When: October 2008 |
d81d9d6b KS |
234 | Why: The stacking of class devices makes these values misleading and |
235 | inconsistent. | |
236 | Class devices should not carry any of these properties, and bus | |
237 | devices have SUBSYTEM and DRIVER as a replacement. | |
238 | Who: Kay Sievers <kay.sievers@suse.de> | |
239 | ||
240 | --------------------------- | |
6c805d2c | 241 | |
b981c591 | 242 | What: ACPI procfs interface |
8b8eb7d8 ZR |
243 | When: July 2008 |
244 | Why: ACPI sysfs conversion should be finished by January 2008. | |
245 | ACPI procfs interface will be removed in July 2008 so that | |
246 | there is enough time for the user space to catch up. | |
b981c591 ZR |
247 | Who: Zhang Rui <rui.zhang@intel.com> |
248 | ||
249 | --------------------------- | |
250 | ||
6d855fcd ZR |
251 | What: CONFIG_ACPI_PROCFS_POWER |
252 | When: 2.6.39 | |
253 | Why: sysfs I/F for ACPI power devices, including AC and Battery, | |
254 | has been working in upstream kenrel since 2.6.24, Sep 2007. | |
255 | In 2.6.37, we make the sysfs I/F always built in and this option | |
256 | disabled by default. | |
257 | Remove this option and the ACPI power procfs interface in 2.6.39. | |
258 | Who: Zhang Rui <rui.zhang@intel.com> | |
259 | ||
260 | --------------------------- | |
261 | ||
1bb67c25 LB |
262 | What: /proc/acpi/button |
263 | When: August 2007 | |
264 | Why: /proc/acpi/button has been replaced by events to the input layer | |
265 | since 2.6.20. | |
266 | Who: Len Brown <len.brown@intel.com> | |
267 | ||
268 | --------------------------- | |
54b290a2 | 269 | |
14e04fb3 LB |
270 | What: /proc/acpi/event |
271 | When: February 2008 | |
272 | Why: /proc/acpi/event has been replaced by events via the input layer | |
273 | and netlink since 2.6.23. | |
274 | Who: Len Brown <len.brown@intel.com> | |
275 | ||
276 | --------------------------- | |
277 | ||
914d97fd | 278 | What: i386/x86_64 bzImage symlinks |
19b4e7f4 | 279 | When: April 2010 |
914d97fd TG |
280 | |
281 | Why: The i386/x86_64 merge provides a symlink to the old bzImage | |
282 | location so not yet updated user space tools, e.g. package | |
283 | scripts, do not break. | |
284 | Who: Thomas Gleixner <tglx@linutronix.de> | |
038a5008 LT |
285 | |
286 | --------------------------- | |
287 | ||
8a0cecff DB |
288 | What: GPIO autorequest on gpio_direction_{input,output}() in gpiolib |
289 | When: February 2010 | |
290 | Why: All callers should use explicit gpio_request()/gpio_free(). | |
291 | The autorequest mechanism in gpiolib was provided mostly as a | |
292 | migration aid for legacy GPIO interfaces (for SOC based GPIOs). | |
293 | Those users have now largely migrated. Platforms implementing | |
294 | the GPIO interfaces without using gpiolib will see no changes. | |
295 | Who: David Brownell <dbrownell@users.sourceforge.net> | |
296 | --------------------------- | |
297 | ||
eb189d8b | 298 | What: b43 support for firmware revision < 410 |
c557289c MB |
299 | When: The schedule was July 2008, but it was decided that we are going to keep the |
300 | code as long as there are no major maintanance headaches. | |
301 | So it _could_ be removed _any_ time now, if it conflicts with something new. | |
eb189d8b MB |
302 | Why: The support code for the old firmware hurts code readability/maintainability |
303 | and slightly hurts runtime performance. Bugfixes for the old firmware | |
304 | are not provided by Broadcom anymore. | |
305 | Who: Michael Buesch <mb@bu3sch.de> | |
e88bb415 DM |
306 | |
307 | --------------------------- | |
308 | ||
52f7c21b MF |
309 | What: /sys/o2cb symlink |
310 | When: January 2010 | |
311 | Why: /sys/fs/o2cb is the proper location for this information - /sys/o2cb | |
312 | exists as a symlink for backwards compatibility for old versions of | |
313 | ocfs2-tools. 2 years should be sufficient time to phase in new versions | |
314 | which know to look in /sys/fs/o2cb. | |
315 | Who: ocfs2-devel@oss.oracle.com | |
d2f5e808 MW |
316 | |
317 | --------------------------- | |
318 | ||
2584e517 RT |
319 | What: Ability for non root users to shm_get hugetlb pages based on mlock |
320 | resource limits | |
321 | When: 2.6.31 | |
322 | Why: Non root users need to be part of /proc/sys/vm/hugetlb_shm_group or | |
323 | have CAP_IPC_LOCK to be able to allocate shm segments backed by | |
324 | huge pages. The mlock based rlimit check to allow shm hugetlb is | |
325 | inconsistent with mmap based allocations. Hence it is being | |
326 | deprecated. | |
327 | Who: Ravikiran Thirumalai <kiran@scalex86.org> | |
328 | ||
329 | --------------------------- | |
330 | ||
16d75239 RH |
331 | What: CONFIG_THERMAL_HWMON |
332 | When: January 2009 | |
333 | Why: This option was introduced just to allow older lm-sensors userspace | |
334 | to keep working over the upgrade to 2.6.26. At the scheduled time of | |
335 | removal fixed lm-sensors (2.x or 3.x) should be readily available. | |
336 | Who: Rene Herman <rene.herman@gmail.com> | |
22bb1be4 JB |
337 | |
338 | --------------------------- | |
339 | ||
340 | What: Code that is now under CONFIG_WIRELESS_EXT_SYSFS | |
341 | (in net/core/net-sysfs.c) | |
342 | When: After the only user (hal) has seen a release with the patches | |
343 | for enough time, probably some time in 2010. | |
344 | Why: Over 1K .text/.data size reduction, data is available in other | |
345 | ways (ioctls) | |
346 | Who: Johannes Berg <johannes@sipsolutions.net> | |
58401572 KPO |
347 | |
348 | --------------------------- | |
349 | ||
753b7aea DJ |
350 | What: sysfs ui for changing p4-clockmod parameters |
351 | When: September 2009 | |
352 | Why: See commits 129f8ae9b1b5be94517da76009ea956e89104ce8 and | |
353 | e088e4c9cdb618675874becb91b2fd581ee707e6. | |
354 | Removal is subject to fixing any remaining bugs in ACPI which may | |
355 | cause the thermal throttling not to happen at the right time. | |
356 | Who: Dave Jones <davej@redhat.com>, Matthew Garrett <mjg@redhat.com> | |
0e57aa11 TG |
357 | |
358 | ----------------------------- | |
359 | ||
360 | What: __do_IRQ all in one fits nothing interrupt handler | |
361 | When: 2.6.32 | |
362 | Why: __do_IRQ was kept for easy migration to the type flow handlers. | |
363 | More than two years of migration time is enough. | |
364 | Who: Thomas Gleixner <tglx@linutronix.de> | |
cb065c06 TG |
365 | |
366 | ----------------------------- | |
367 | ||
f110ca48 AC |
368 | What: fakephp and associated sysfs files in /sys/bus/pci/slots/ |
369 | When: 2011 | |
370 | Why: In 2.6.27, the semantics of /sys/bus/pci/slots was redefined to | |
371 | represent a machine's physical PCI slots. The change in semantics | |
372 | had userspace implications, as the hotplug core no longer allowed | |
373 | drivers to create multiple sysfs files per physical slot (required | |
374 | for multi-function devices, e.g.). fakephp was seen as a developer's | |
375 | tool only, and its interface changed. Too late, we learned that | |
376 | there were some users of the fakephp interface. | |
377 | ||
378 | In 2.6.30, the original fakephp interface was restored. At the same | |
379 | time, the PCI core gained the ability that fakephp provided, namely | |
380 | function-level hot-remove and hot-add. | |
381 | ||
382 | Since the PCI core now provides the same functionality, exposed in: | |
383 | ||
384 | /sys/bus/pci/rescan | |
385 | /sys/bus/pci/devices/.../remove | |
386 | /sys/bus/pci/devices/.../rescan | |
387 | ||
388 | there is no functional reason to maintain fakephp as well. | |
389 | ||
390 | We will keep the existing module so that 'modprobe fakephp' will | |
391 | present the old /sys/bus/pci/slots/... interface for compatibility, | |
392 | but users are urged to migrate their applications to the API above. | |
393 | ||
394 | After a reasonable transition period, we will remove the legacy | |
395 | fakephp interface. | |
396 | Who: Alex Chiang <achiang@hp.com> | |
3f307fb3 JD |
397 | |
398 | --------------------------- | |
399 | ||
c64fb016 JB |
400 | What: CONFIG_RFKILL_INPUT |
401 | When: 2.6.33 | |
402 | Why: Should be implemented in userspace, policy daemon. | |
403 | Who: Johannes Berg <johannes@sipsolutions.net> | |
9cbc1cb8 | 404 | |
45f458e9 | 405 | ---------------------------- |
93fe4483 TH |
406 | |
407 | What: sound-slot/service-* module aliases and related clutters in | |
408 | sound/sound_core.c | |
409 | When: August 2010 | |
410 | Why: OSS sound_core grabs all legacy minors (0-255) of SOUND_MAJOR | |
411 | (14) and requests modules using custom sound-slot/service-* | |
412 | module aliases. The only benefit of doing this is allowing | |
413 | use of custom module aliases which might as well be considered | |
414 | a bug at this point. This preemptive claiming prevents | |
415 | alternative OSS implementations. | |
416 | ||
417 | Till the feature is removed, the kernel will be requesting | |
418 | both sound-slot/service-* and the standard char-major-* module | |
419 | aliases and allow turning off the pre-claiming selectively via | |
420 | CONFIG_SOUND_OSS_CORE_PRECLAIM and soundcore.preclaim_oss | |
421 | kernel parameter. | |
422 | ||
423 | After the transition phase is complete, both the custom module | |
424 | aliases and switches to disable it will go away. This removal | |
425 | will also allow making ALSA OSS emulation independent of | |
426 | sound_core. The dependency will be broken then too. | |
427 | Who: Tejun Heo <tj@kernel.org> | |
d0153ca3 AK |
428 | |
429 | ---------------------------- | |
430 | ||
728900f6 CC |
431 | What: Support for lcd_switch and display_get in asus-laptop driver |
432 | When: March 2010 | |
433 | Why: These two features use non-standard interfaces. There are the | |
434 | only features that really need multiple path to guess what's | |
435 | the right method name on a specific laptop. | |
436 | ||
437 | Removing them will allow to remove a lot of code an significantly | |
438 | clean the drivers. | |
439 | ||
440 | This will affect the backlight code which won't be able to know | |
441 | if the backlight is on or off. The platform display file will also be | |
442 | write only (like the one in eeepc-laptop). | |
443 | ||
444 | This should'nt affect a lot of user because they usually know | |
445 | when their display is on or off. | |
446 | ||
447 | Who: Corentin Chary <corentin.chary@gmail.com> | |
448 | ||
449 | ---------------------------- | |
ceafe1d2 | 450 | |
69c86373 | 451 | What: sysfs-class-rfkill state file |
452 | When: Feb 2014 | |
453 | Files: net/rfkill/core.c | |
454 | Why: Documented as obsolete since Feb 2010. This file is limited to 3 | |
455 | states while the rfkill drivers can have 4 states. | |
456 | Who: anybody or Florian Mickler <florian@mickler.org> | |
457 | ||
458 | ---------------------------- | |
459 | ||
460 | What: sysfs-class-rfkill claim file | |
461 | When: Feb 2012 | |
462 | Files: net/rfkill/core.c | |
463 | Why: It is not possible to claim an rfkill driver since 2007. This is | |
464 | Documented as obsolete since Feb 2010. | |
465 | Who: anybody or Florian Mickler <florian@mickler.org> | |
466 | ||
467 | ---------------------------- | |
468 | ||
79e95f47 JK |
469 | What: capifs |
470 | When: February 2011 | |
471 | Files: drivers/isdn/capi/capifs.* | |
472 | Why: udev fully replaces this special file system that only contains CAPI | |
473 | NCCI TTY device nodes. User space (pppdcapiplugin) works without | |
474 | noticing the difference. | |
475 | Who: Jan Kiszka <jan.kiszka@web.de> | |
c812a51d LT |
476 | |
477 | ---------------------------- | |
478 | ||
db358796 AK |
479 | What: KVM paravirt mmu host support |
480 | When: January 2011 | |
481 | Why: The paravirt mmu host support is slower than non-paravirt mmu, both | |
482 | on newer and older hardware. It is already not exposed to the guest, | |
483 | and kept only for live migration purposes. | |
484 | Who: Avi Kivity <avi@redhat.com> | |
c812a51d LT |
485 | |
486 | ---------------------------- | |
4c81ba49 | 487 | |
2b068618 WYG |
488 | What: iwlwifi 50XX module parameters |
489 | When: 2.6.40 | |
490 | Why: The "..50" modules parameters were used to configure 5000 series and | |
491 | up devices; different set of module parameters also available for 4965 | |
492 | with same functionalities. Consolidate both set into single place | |
493 | in drivers/net/wireless/iwlwifi/iwl-agn.c | |
494 | ||
495 | Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> | |
d34a5a62 WYG |
496 | |
497 | ---------------------------- | |
498 | ||
499 | What: iwl4965 alias support | |
500 | When: 2.6.40 | |
501 | Why: Internal alias support has been present in module-init-tools for some | |
502 | time, the MODULE_ALIAS("iwl4965") boilerplate aliases can be removed | |
503 | with no impact. | |
504 | ||
505 | Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> | |
62910554 | 506 | |
0cb47ea2 JE |
507 | --------------------------- |
508 | ||
509 | What: xt_NOTRACK | |
510 | Files: net/netfilter/xt_NOTRACK.c | |
511 | When: April 2011 | |
512 | Why: Superseded by xt_CT | |
513 | Who: Netfilter developer team <netfilter-devel@vger.kernel.org> | |
278554bd | 514 | |
6e0b7b2c LT |
515 | ---------------------------- |
516 | ||
6932bf37 TG |
517 | What: IRQF_DISABLED |
518 | When: 2.6.36 | |
519 | Why: The flag is a NOOP as we run interrupt handlers with interrupts disabled | |
520 | Who: Thomas Gleixner <tglx@linutronix.de> | |
6e0b7b2c LT |
521 | |
522 | ---------------------------- | |
523 | ||
72ad5d77 RW |
524 | What: The acpi_sleep=s4_nonvs command line option |
525 | When: 2.6.37 | |
526 | Files: arch/x86/kernel/acpi/sleep.c | |
527 | Why: superseded by acpi_sleep=nonvs | |
528 | Who: Rafael J. Wysocki <rjw@sisk.pl> | |
529 | ||
530 | ---------------------------- | |
17583363 FT |
531 | |
532 | What: PCI DMA unmap state API | |
533 | When: August 2012 | |
534 | Why: PCI DMA unmap state API (include/linux/pci-dma.h) was replaced | |
535 | with DMA unmap state API (DMA unmap state API can be used for | |
536 | any bus). | |
537 | Who: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | |
538 | ||
539 | ---------------------------- | |
a35274cd FT |
540 | |
541 | What: DMA_xxBIT_MASK macros | |
542 | When: Jun 2011 | |
543 | Why: DMA_xxBIT_MASK macros were replaced with DMA_BIT_MASK() macros. | |
544 | Who: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | |
545 | ||
546 | ---------------------------- | |
547 | ||
45531757 DL |
548 | What: namespace cgroup (ns_cgroup) |
549 | When: 2.6.38 | |
550 | Why: The ns_cgroup leads to some problems: | |
551 | * cgroup creation is out-of-control | |
552 | * cgroup name can conflict when pids are looping | |
553 | * it is not possible to have a single process handling | |
554 | a lot of namespaces without falling in a exponential creation time | |
555 | * we may want to create a namespace without creating a cgroup | |
556 | ||
557 | The ns_cgroup is replaced by a compatibility flag 'clone_children', | |
558 | where a newly created cgroup will copy the parent cgroup values. | |
559 | The userspace has to manually create a cgroup and add a task to | |
560 | the 'tasks' file. | |
561 | Who: Daniel Lezcano <daniel.lezcano@free.fr> | |
562 | ||
563 | ---------------------------- | |
564 | ||
72645eff WYG |
565 | What: iwlwifi disable_hw_scan module parameters |
566 | When: 2.6.40 | |
567 | Why: Hareware scan is the prefer method for iwlwifi devices for | |
568 | scanning operation. Remove software scan support for all the | |
569 | iwlwifi devices. | |
570 | ||
571 | Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> | |
572 | ||
573 | ---------------------------- | |
4390110f | 574 | |
c67874f9 N |
575 | What: access to nfsd auth cache through sys_nfsservctl or '.' files |
576 | in the 'nfsd' filesystem. | |
577 | When: 2.6.40 | |
578 | Why: This is a legacy interface which have been replaced by a more | |
579 | dynamic cache. Continuing to maintain this interface is an | |
580 | unnecessary burden. | |
581 | Who: NeilBrown <neilb@suse.de> | |
582 | ||
583 | ---------------------------- | |
e1e18ee1 JD |
584 | |
585 | What: i2c_adapter.id | |
586 | When: June 2011 | |
587 | Why: This field is deprecated. I2C device drivers shouldn't change their | |
588 | behavior based on the underlying I2C adapter. Instead, the I2C | |
589 | adapter driver should instantiate the I2C devices and provide the | |
590 | needed platform-specific information. | |
591 | Who: Jean Delvare <khali@linux-fr.org> | |
592 | ||
593 | ---------------------------- | |
ed41390f TH |
594 | |
595 | What: cancel_rearming_delayed_work[queue]() | |
596 | When: 2.6.39 | |
597 | ||
598 | Why: The functions have been superceded by cancel_delayed_work_sync() | |
599 | quite some time ago. The conversion is trivial and there is no | |
600 | in-kernel user left. | |
601 | Who: Tejun Heo <tj@kernel.org> | |
602 | ||
603 | ---------------------------- | |
632bdb24 JD |
604 | |
605 | What: Legacy, non-standard chassis intrusion detection interface. | |
606 | When: June 2011 | |
607 | Why: The adm9240, w83792d and w83793 hardware monitoring drivers have | |
608 | legacy interfaces for chassis intrusion detection. A standard | |
609 | interface has been added to each driver, so the legacy interface | |
610 | can be removed. | |
611 | Who: Jean Delvare <khali@linux-fr.org> | |
612 | ||
613 | ---------------------------- |