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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 | ||
99c63221 LB |
9 | What: CONFIG_APM_CPU_IDLE, and its ability to call APM BIOS in idle |
10 | When: 2012 | |
11 | Why: This optional sub-feature of APM is of dubious reliability, | |
12 | and ancient APM laptops are likely better served by calling HLT. | |
13 | Deleting CONFIG_APM_CPU_IDLE allows x86 to stop exporting | |
14 | the pm_idle function pointer to modules. | |
15 | Who: Len Brown <len.brown@intel.com> | |
16 | ||
17 | ---------------------------- | |
18 | ||
cdaab4a0 LB |
19 | What: x86_32 "no-hlt" cmdline param |
20 | When: 2012 | |
21 | Why: remove a branch from idle path, simplify code used by everybody. | |
22 | This option disabled the use of HLT in idle and machine_halt() | |
23 | for hardware that was flakey 15-years ago. Today we have | |
24 | "idle=poll" that removed HLT from idle, and so if such a machine | |
25 | is still running the upstream kernel, "idle=poll" is likely sufficient. | |
26 | Who: Len Brown <len.brown@intel.com> | |
27 | ||
28 | ---------------------------- | |
29 | ||
5d4c47e0 LB |
30 | What: x86 "idle=mwait" cmdline param |
31 | When: 2012 | |
32 | Why: simplify x86 idle code | |
33 | Who: Len Brown <len.brown@intel.com> | |
34 | ||
35 | ---------------------------- | |
36 | ||
4d8cd268 LR |
37 | What: PRISM54 |
38 | When: 2.6.34 | |
39 | ||
40 | Why: prism54 FullMAC PCI / Cardbus devices used to be supported only by the | |
41 | prism54 wireless driver. After Intersil stopped selling these | |
42 | devices in preference for the newer more flexible SoftMAC devices | |
43 | a SoftMAC device driver was required and prism54 did not support | |
44 | them. The p54pci driver now exists and has been present in the kernel for | |
45 | a while. This driver supports both SoftMAC devices and FullMAC devices. | |
46 | The main difference between these devices was the amount of memory which | |
47 | could be used for the firmware. The SoftMAC devices support a smaller | |
48 | amount of memory. Because of this the SoftMAC firmware fits into FullMAC | |
49 | devices's memory. p54pci supports not only PCI / Cardbus but also USB | |
50 | and SPI. Since p54pci supports all devices prism54 supports | |
51 | you will have a conflict. I'm not quite sure how distributions are | |
52 | handling this conflict right now. prism54 was kept around due to | |
53 | claims users may experience issues when using the SoftMAC driver. | |
54 | Time has passed users have not reported issues. If you use prism54 | |
55 | and for whatever reason you cannot use p54pci please let us know! | |
56 | E-mail us at: linux-wireless@vger.kernel.org | |
57 | ||
58 | For more information see the p54 wiki page: | |
59 | ||
60 | http://wireless.kernel.org/en/users/Drivers/p54 | |
61 | ||
62 | Who: Luis R. Rodriguez <lrodriguez@atheros.com> | |
63 | ||
64 | --------------------------- | |
65 | ||
9d9b8fb0 RG |
66 | What: IRQF_SAMPLE_RANDOM |
67 | Check: IRQF_SAMPLE_RANDOM | |
68 | When: July 2009 | |
69 | ||
70 | Why: Many of IRQF_SAMPLE_RANDOM users are technically bogus as entropy | |
71 | sources in the kernel's current entropy model. To resolve this, every | |
72 | input point to the kernel's entropy pool needs to better document the | |
73 | type of entropy source it actually is. This will be replaced with | |
74 | additional add_*_randomness functions in drivers/char/random.c | |
75 | ||
76 | Who: Robin Getz <rgetz@blackfin.uclinux.org> & Matt Mackall <mpm@selenic.com> | |
77 | ||
78 | --------------------------- | |
79 | ||
6ee7d330 | 80 | What: The ieee80211_regdom module parameter |
8a5117d8 | 81 | When: March 2010 / desktop catchup |
6ee7d330 LR |
82 | |
83 | Why: This was inherited by the CONFIG_WIRELESS_OLD_REGULATORY code, | |
84 | and currently serves as an option for users to define an | |
85 | ISO / IEC 3166 alpha2 code for the country they are currently | |
86 | present in. Although there are userspace API replacements for this | |
87 | through nl80211 distributions haven't yet caught up with implementing | |
88 | decent alternatives through standard GUIs. Although available as an | |
89 | option through iw or wpa_supplicant its just a matter of time before | |
90 | distributions pick up good GUI options for this. The ideal solution | |
91 | would actually consist of intelligent designs which would do this for | |
92 | the user automatically even when travelling through different countries. | |
93 | Until then we leave this module parameter as a compromise. | |
94 | ||
95 | When userspace improves with reasonable widely-available alternatives for | |
96 | this we will no longer need this module parameter. This entry hopes that | |
97 | by the super-futuristically looking date of "March 2010" we will have | |
98 | such replacements widely available. | |
99 | ||
100 | Who: Luis R. Rodriguez <lrodriguez@atheros.com> | |
101 | ||
102 | --------------------------- | |
103 | ||
471d0558 | 104 | What: dev->power.power_state |
1ebfd79e PM |
105 | When: July 2007 |
106 | Why: Broken design for runtime control over driver power states, confusing | |
107 | driver-internal runtime power management with: mechanisms to support | |
108 | system-wide sleep state transitions; event codes that distinguish | |
109 | different phases of swsusp "sleep" transitions; and userspace policy | |
110 | inputs. This framework was never widely used, and most attempts to | |
111 | use it were broken. Drivers should instead be exposing domain-specific | |
112 | interfaces either to kernel or to userspace. | |
a2531293 | 113 | Who: Pavel Machek <pavel@ucw.cz> |
1ebfd79e PM |
114 | |
115 | --------------------------- | |
116 | ||
51b1bd2a DR |
117 | What: /proc/<pid>/oom_adj |
118 | When: August 2012 | |
119 | Why: /proc/<pid>/oom_adj allows userspace to influence the oom killer's | |
120 | badness heuristic used to determine which task to kill when the kernel | |
121 | is out of memory. | |
122 | ||
123 | The badness heuristic has since been rewritten since the introduction of | |
124 | this tunable such that its meaning is deprecated. The value was | |
125 | implemented as a bitshift on a score generated by the badness() | |
126 | function that did not have any precise units of measure. With the | |
127 | rewrite, the score is given as a proportion of available memory to the | |
128 | task allocating pages, so using a bitshift which grows the score | |
129 | exponentially is, thus, impossible to tune with fine granularity. | |
130 | ||
131 | A much more powerful interface, /proc/<pid>/oom_score_adj, was | |
132 | introduced with the oom killer rewrite that allows users to increase or | |
11239836 | 133 | decrease the badness score linearly. This interface will replace |
51b1bd2a DR |
134 | /proc/<pid>/oom_adj. |
135 | ||
136 | A warning will be emitted to the kernel log if an application uses this | |
137 | deprecated interface. After it is printed once, future warnings will be | |
138 | suppressed until the kernel is rebooted. | |
139 | ||
140 | --------------------------- | |
cf8e9086 | 141 | |
ac515898 CH |
142 | What: remove EXPORT_SYMBOL(kernel_thread) |
143 | When: August 2006 | |
144 | Files: arch/*/kernel/*_ksyms.c | |
f0a594c1 | 145 | Check: kernel_thread |
ac515898 CH |
146 | Why: kernel_thread is a low-level implementation detail. Drivers should |
147 | use the <linux/kthread.h> API instead which shields them from | |
148 | implementation details and provides a higherlevel interface that | |
149 | prevents bugs and code duplication | |
150 | Who: Christoph Hellwig <hch@lst.de> | |
151 | ||
152 | --------------------------- | |
153 | ||
f71d20e9 AV |
154 | What: Unused EXPORT_SYMBOL/EXPORT_SYMBOL_GPL exports |
155 | (temporary transition config option provided until then) | |
156 | The transition config option will also be removed at the same time. | |
157 | When: before 2.6.19 | |
158 | Why: Unused symbols are both increasing the size of the kernel binary | |
159 | and are often a sign of "wrong API" | |
160 | Who: Arjan van de Ven <arjan@linux.intel.com> | |
161 | ||
162 | --------------------------- | |
163 | ||
d81d9d6b | 164 | What: PHYSDEVPATH, PHYSDEVBUS, PHYSDEVDRIVER in the uevent environment |
acbd39fb | 165 | When: October 2008 |
d81d9d6b KS |
166 | Why: The stacking of class devices makes these values misleading and |
167 | inconsistent. | |
168 | Class devices should not carry any of these properties, and bus | |
169 | devices have SUBSYTEM and DRIVER as a replacement. | |
170 | Who: Kay Sievers <kay.sievers@suse.de> | |
171 | ||
172 | --------------------------- | |
6c805d2c | 173 | |
b981c591 | 174 | What: ACPI procfs interface |
8b8eb7d8 ZR |
175 | When: July 2008 |
176 | Why: ACPI sysfs conversion should be finished by January 2008. | |
177 | ACPI procfs interface will be removed in July 2008 so that | |
178 | there is enough time for the user space to catch up. | |
b981c591 ZR |
179 | Who: Zhang Rui <rui.zhang@intel.com> |
180 | ||
181 | --------------------------- | |
182 | ||
6d855fcd ZR |
183 | What: CONFIG_ACPI_PROCFS_POWER |
184 | When: 2.6.39 | |
185 | Why: sysfs I/F for ACPI power devices, including AC and Battery, | |
70f23fd6 | 186 | has been working in upstream kernel since 2.6.24, Sep 2007. |
6d855fcd ZR |
187 | In 2.6.37, we make the sysfs I/F always built in and this option |
188 | disabled by default. | |
189 | Remove this option and the ACPI power procfs interface in 2.6.39. | |
190 | Who: Zhang Rui <rui.zhang@intel.com> | |
191 | ||
192 | --------------------------- | |
193 | ||
14e04fb3 LB |
194 | What: /proc/acpi/event |
195 | When: February 2008 | |
196 | Why: /proc/acpi/event has been replaced by events via the input layer | |
197 | and netlink since 2.6.23. | |
198 | Who: Len Brown <len.brown@intel.com> | |
199 | ||
200 | --------------------------- | |
201 | ||
914d97fd | 202 | What: i386/x86_64 bzImage symlinks |
19b4e7f4 | 203 | When: April 2010 |
914d97fd TG |
204 | |
205 | Why: The i386/x86_64 merge provides a symlink to the old bzImage | |
206 | location so not yet updated user space tools, e.g. package | |
207 | scripts, do not break. | |
208 | Who: Thomas Gleixner <tglx@linutronix.de> | |
038a5008 LT |
209 | |
210 | --------------------------- | |
211 | ||
8a0cecff DB |
212 | What: GPIO autorequest on gpio_direction_{input,output}() in gpiolib |
213 | When: February 2010 | |
214 | Why: All callers should use explicit gpio_request()/gpio_free(). | |
215 | The autorequest mechanism in gpiolib was provided mostly as a | |
216 | migration aid for legacy GPIO interfaces (for SOC based GPIOs). | |
217 | Those users have now largely migrated. Platforms implementing | |
218 | the GPIO interfaces without using gpiolib will see no changes. | |
219 | Who: David Brownell <dbrownell@users.sourceforge.net> | |
220 | --------------------------- | |
221 | ||
eb189d8b | 222 | What: b43 support for firmware revision < 410 |
c557289c MB |
223 | When: The schedule was July 2008, but it was decided that we are going to keep the |
224 | code as long as there are no major maintanance headaches. | |
225 | So it _could_ be removed _any_ time now, if it conflicts with something new. | |
eb189d8b MB |
226 | Why: The support code for the old firmware hurts code readability/maintainability |
227 | and slightly hurts runtime performance. Bugfixes for the old firmware | |
228 | are not provided by Broadcom anymore. | |
eb032b98 | 229 | Who: Michael Buesch <m@bues.ch> |
e88bb415 DM |
230 | |
231 | --------------------------- | |
232 | ||
2584e517 RT |
233 | What: Ability for non root users to shm_get hugetlb pages based on mlock |
234 | resource limits | |
235 | When: 2.6.31 | |
236 | Why: Non root users need to be part of /proc/sys/vm/hugetlb_shm_group or | |
237 | have CAP_IPC_LOCK to be able to allocate shm segments backed by | |
238 | huge pages. The mlock based rlimit check to allow shm hugetlb is | |
239 | inconsistent with mmap based allocations. Hence it is being | |
240 | deprecated. | |
241 | Who: Ravikiran Thirumalai <kiran@scalex86.org> | |
242 | ||
243 | --------------------------- | |
244 | ||
22bb1be4 JB |
245 | What: Code that is now under CONFIG_WIRELESS_EXT_SYSFS |
246 | (in net/core/net-sysfs.c) | |
0052d812 | 247 | When: 3.5 |
22bb1be4 JB |
248 | Why: Over 1K .text/.data size reduction, data is available in other |
249 | ways (ioctls) | |
250 | Who: Johannes Berg <johannes@sipsolutions.net> | |
58401572 KPO |
251 | |
252 | --------------------------- | |
253 | ||
753b7aea DJ |
254 | What: sysfs ui for changing p4-clockmod parameters |
255 | When: September 2009 | |
256 | Why: See commits 129f8ae9b1b5be94517da76009ea956e89104ce8 and | |
257 | e088e4c9cdb618675874becb91b2fd581ee707e6. | |
258 | Removal is subject to fixing any remaining bugs in ACPI which may | |
259 | cause the thermal throttling not to happen at the right time. | |
260 | Who: Dave Jones <davej@redhat.com>, Matthew Garrett <mjg@redhat.com> | |
0e57aa11 TG |
261 | |
262 | ----------------------------- | |
263 | ||
f110ca48 AC |
264 | What: fakephp and associated sysfs files in /sys/bus/pci/slots/ |
265 | When: 2011 | |
266 | Why: In 2.6.27, the semantics of /sys/bus/pci/slots was redefined to | |
267 | represent a machine's physical PCI slots. The change in semantics | |
268 | had userspace implications, as the hotplug core no longer allowed | |
269 | drivers to create multiple sysfs files per physical slot (required | |
270 | for multi-function devices, e.g.). fakephp was seen as a developer's | |
271 | tool only, and its interface changed. Too late, we learned that | |
272 | there were some users of the fakephp interface. | |
273 | ||
274 | In 2.6.30, the original fakephp interface was restored. At the same | |
275 | time, the PCI core gained the ability that fakephp provided, namely | |
276 | function-level hot-remove and hot-add. | |
277 | ||
278 | Since the PCI core now provides the same functionality, exposed in: | |
279 | ||
280 | /sys/bus/pci/rescan | |
281 | /sys/bus/pci/devices/.../remove | |
282 | /sys/bus/pci/devices/.../rescan | |
283 | ||
284 | there is no functional reason to maintain fakephp as well. | |
285 | ||
286 | We will keep the existing module so that 'modprobe fakephp' will | |
287 | present the old /sys/bus/pci/slots/... interface for compatibility, | |
288 | but users are urged to migrate their applications to the API above. | |
289 | ||
290 | After a reasonable transition period, we will remove the legacy | |
291 | fakephp interface. | |
292 | Who: Alex Chiang <achiang@hp.com> | |
3f307fb3 JD |
293 | |
294 | --------------------------- | |
295 | ||
c64fb016 JB |
296 | What: CONFIG_RFKILL_INPUT |
297 | When: 2.6.33 | |
298 | Why: Should be implemented in userspace, policy daemon. | |
299 | Who: Johannes Berg <johannes@sipsolutions.net> | |
9cbc1cb8 | 300 | |
45f458e9 | 301 | ---------------------------- |
93fe4483 TH |
302 | |
303 | What: sound-slot/service-* module aliases and related clutters in | |
304 | sound/sound_core.c | |
305 | When: August 2010 | |
306 | Why: OSS sound_core grabs all legacy minors (0-255) of SOUND_MAJOR | |
307 | (14) and requests modules using custom sound-slot/service-* | |
308 | module aliases. The only benefit of doing this is allowing | |
309 | use of custom module aliases which might as well be considered | |
310 | a bug at this point. This preemptive claiming prevents | |
311 | alternative OSS implementations. | |
312 | ||
313 | Till the feature is removed, the kernel will be requesting | |
314 | both sound-slot/service-* and the standard char-major-* module | |
315 | aliases and allow turning off the pre-claiming selectively via | |
316 | CONFIG_SOUND_OSS_CORE_PRECLAIM and soundcore.preclaim_oss | |
317 | kernel parameter. | |
318 | ||
319 | After the transition phase is complete, both the custom module | |
320 | aliases and switches to disable it will go away. This removal | |
321 | will also allow making ALSA OSS emulation independent of | |
322 | sound_core. The dependency will be broken then too. | |
323 | Who: Tejun Heo <tj@kernel.org> | |
d0153ca3 AK |
324 | |
325 | ---------------------------- | |
326 | ||
69c86373 | 327 | What: sysfs-class-rfkill state file |
328 | When: Feb 2014 | |
329 | Files: net/rfkill/core.c | |
330 | Why: Documented as obsolete since Feb 2010. This file is limited to 3 | |
331 | states while the rfkill drivers can have 4 states. | |
332 | Who: anybody or Florian Mickler <florian@mickler.org> | |
333 | ||
334 | ---------------------------- | |
335 | ||
336 | What: sysfs-class-rfkill claim file | |
337 | When: Feb 2012 | |
338 | Files: net/rfkill/core.c | |
339 | Why: It is not possible to claim an rfkill driver since 2007. This is | |
340 | Documented as obsolete since Feb 2010. | |
341 | Who: anybody or Florian Mickler <florian@mickler.org> | |
342 | ||
343 | ---------------------------- | |
344 | ||
2b068618 | 345 | What: iwlwifi 50XX module parameters |
d5b55a8f | 346 | When: 3.0 |
2b068618 WYG |
347 | Why: The "..50" modules parameters were used to configure 5000 series and |
348 | up devices; different set of module parameters also available for 4965 | |
349 | with same functionalities. Consolidate both set into single place | |
350 | in drivers/net/wireless/iwlwifi/iwl-agn.c | |
351 | ||
352 | Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> | |
d34a5a62 WYG |
353 | |
354 | ---------------------------- | |
355 | ||
356 | What: iwl4965 alias support | |
d5b55a8f | 357 | When: 3.0 |
d34a5a62 WYG |
358 | Why: Internal alias support has been present in module-init-tools for some |
359 | time, the MODULE_ALIAS("iwl4965") boilerplate aliases can be removed | |
360 | with no impact. | |
361 | ||
362 | Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> | |
62910554 | 363 | |
0cb47ea2 JE |
364 | --------------------------- |
365 | ||
366 | What: xt_NOTRACK | |
367 | Files: net/netfilter/xt_NOTRACK.c | |
368 | When: April 2011 | |
369 | Why: Superseded by xt_CT | |
370 | Who: Netfilter developer team <netfilter-devel@vger.kernel.org> | |
278554bd | 371 | |
6e0b7b2c LT |
372 | ---------------------------- |
373 | ||
6932bf37 TG |
374 | What: IRQF_DISABLED |
375 | When: 2.6.36 | |
376 | Why: The flag is a NOOP as we run interrupt handlers with interrupts disabled | |
377 | Who: Thomas Gleixner <tglx@linutronix.de> | |
6e0b7b2c LT |
378 | |
379 | ---------------------------- | |
380 | ||
17583363 FT |
381 | What: PCI DMA unmap state API |
382 | When: August 2012 | |
383 | Why: PCI DMA unmap state API (include/linux/pci-dma.h) was replaced | |
384 | with DMA unmap state API (DMA unmap state API can be used for | |
385 | any bus). | |
386 | Who: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | |
387 | ||
388 | ---------------------------- | |
a35274cd | 389 | |
72645eff | 390 | What: iwlwifi disable_hw_scan module parameters |
d5b55a8f | 391 | When: 3.0 |
72645eff WYG |
392 | Why: Hareware scan is the prefer method for iwlwifi devices for |
393 | scanning operation. Remove software scan support for all the | |
394 | iwlwifi devices. | |
395 | ||
396 | Who: Wey-Yi Guy <wey-yi.w.guy@intel.com> | |
397 | ||
398 | ---------------------------- | |
4390110f | 399 | |
632bdb24 JD |
400 | What: Legacy, non-standard chassis intrusion detection interface. |
401 | When: June 2011 | |
402 | Why: The adm9240, w83792d and w83793 hardware monitoring drivers have | |
403 | legacy interfaces for chassis intrusion detection. A standard | |
404 | interface has been added to each driver, so the legacy interface | |
405 | can be removed. | |
406 | Who: Jean Delvare <khali@linux-fr.org> | |
407 | ||
408 | ---------------------------- | |
552b372b | 409 | |
cc4fc022 JE |
410 | What: xt_connlimit rev 0 |
411 | When: 2012 | |
412 | Who: Jan Engelhardt <jengelh@medozas.de> | |
413 | Files: net/netfilter/xt_connlimit.c | |
414 | ||
415 | ---------------------------- | |
da935c66 | 416 | |
de81bbea FW |
417 | What: ipt_addrtype match include file |
418 | When: 2012 | |
419 | Why: superseded by xt_addrtype | |
420 | Who: Florian Westphal <fw@strlen.de> | |
421 | Files: include/linux/netfilter_ipv4/ipt_addrtype.h | |
422 | ||
423 | ---------------------------- | |
fe6fc258 JD |
424 | |
425 | What: i2c_driver.attach_adapter | |
426 | i2c_driver.detach_adapter | |
427 | When: September 2011 | |
428 | Why: These legacy callbacks should no longer be used as i2c-core offers | |
429 | a variety of preferable alternative ways to instantiate I2C devices. | |
430 | Who: Jean Delvare <khali@linux-fr.org> | |
431 | ||
432 | ---------------------------- | |
1dc8ddfd | 433 | |
62936982 HV |
434 | What: Opening a radio device node will no longer automatically switch the |
435 | tuner mode from tv to radio. | |
436 | When: 3.3 | |
437 | Why: Just opening a V4L device should not change the state of the hardware | |
438 | like that. It's very unexpected and against the V4L spec. Instead, you | |
439 | switch to radio mode by calling VIDIOC_S_FREQUENCY. This is the second | |
440 | and last step of the move to consistent handling of tv and radio tuners. | |
441 | Who: Hans Verkuil <hans.verkuil@cisco.com> | |
442 | ||
443 | ---------------------------- | |
f549953c | 444 | |
664a51a8 AS |
445 | What: g_file_storage driver |
446 | When: 3.8 | |
447 | Why: This driver has been superseded by g_mass_storage. | |
448 | Who: Alan Stern <stern@rowland.harvard.edu> | |
449 | ||
450 | ---------------------------- | |
7b8aca65 LCY |
451 | |
452 | What: threeg and interface sysfs files in /sys/devices/platform/acer-wmi | |
453 | When: 2012 | |
454 | Why: In 3.0, we can now autodetect internal 3G device and already have | |
455 | the threeg rfkill device. So, we plan to remove threeg sysfs support | |
456 | for it's no longer necessary. | |
457 | ||
458 | We also plan to remove interface sysfs file that exposed which ACPI-WMI | |
459 | interface that was used by acer-wmi driver. It will replaced by | |
460 | information log when acer-wmi initial. | |
461 | Who: Lee, Chun-Yi <jlee@novell.com> | |
242d6219 | 462 | |
d327ab5b MN |
463 | --------------------------- |
464 | ||
465 | What: /sys/devices/platform/_UDC_/udc/_UDC_/is_dualspeed file and | |
466 | is_dualspeed line in /sys/devices/platform/ci13xxx_*/udc/device file. | |
467 | When: 3.8 | |
468 | Why: The is_dualspeed file is superseded by maximum_speed in the same | |
469 | directory and is_dualspeed line in device file is superseded by | |
470 | max_speed line in the same file. | |
471 | ||
472 | The maximum_speed/max_speed specifies maximum speed supported by UDC. | |
473 | To check if dualspeeed is supported, check if the value is >= 3. | |
474 | Various possible speeds are defined in <linux/usb/ch9.h>. | |
475 | Who: Michal Nazarewicz <mina86@mina86.com> | |
476 | ||
242d6219 | 477 | ---------------------------- |
094daf7d | 478 | |
242d6219 CH |
479 | What: The XFS nodelaylog mount option |
480 | When: 3.3 | |
481 | Why: The delaylog mode that has been the default since 2.6.39 has proven | |
482 | stable, and the old code is in the way of additional improvements in | |
483 | the log code. | |
484 | Who: Christoph Hellwig <hch@lst.de> | |
094daf7d JL |
485 | |
486 | ---------------------------- | |
487 | ||
3c607d27 DF |
488 | What: iwlagn alias support |
489 | When: 3.5 | |
490 | Why: The iwlagn module has been renamed iwlwifi. The alias will be around | |
491 | for backward compatibility for several cycles and then dropped. | |
094daf7d | 492 | Who: Don Fry <donald.h.fry@intel.com> |
7e00fe2e BH |
493 | |
494 | ---------------------------- | |
495 | ||
496 | What: pci_scan_bus_parented() | |
497 | When: 3.5 | |
498 | Why: The pci_scan_bus_parented() interface creates a new root bus. The | |
499 | bus is created with default resources (ioport_resource and | |
500 | iomem_resource) that are always wrong, so we rely on arch code to | |
501 | correct them later. Callers of pci_scan_bus_parented() should | |
502 | convert to using pci_scan_root_bus() so they can supply a list of | |
503 | bus resources when the bus is created. | |
504 | Who: Bjorn Helgaas <bhelgaas@google.com> | |
08a52e1b NF |
505 | |
506 | ---------------------------- | |
507 | ||
7396bd9f SAS |
508 | What: Low Performance USB Block driver ("CONFIG_BLK_DEV_UB") |
509 | When: 3.6 | |
510 | Why: This driver provides support for USB storage devices like "USB | |
511 | sticks". As of now, it is deactivated in Debian, Fedora and | |
512 | Ubuntu. All current users can switch over to usb-storage | |
513 | (CONFIG_USB_STORAGE) which only drawback is the additional SCSI | |
514 | stack. | |
515 | Who: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> | |
9f393834 LT |
516 | |
517 | ---------------------------- | |
518 | ||
317b6e12 CW |
519 | What: kmap_atomic(page, km_type) |
520 | When: 3.5 | |
521 | Why: The old kmap_atomic() with two arguments is deprecated, we only | |
522 | keep it for backward compatibility for few cycles and then drop it. | |
523 | Who: Cong Wang <amwang@redhat.com> | |
ec0c4274 KC |
524 | |
525 | ---------------------------- | |
526 | ||
527 | What: get_robust_list syscall | |
528 | When: 2013 | |
529 | Why: There appear to be no production users of the get_robust_list syscall, | |
530 | and it runs the risk of leaking address locations, allowing the bypass | |
531 | of ASLR. It was only ever intended for debugging, so it should be | |
532 | removed. | |
533 | Who: Kees Cook <keescook@chromium.org> |