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authorLinus Torvalds <torvalds@linux-foundation.org>2011-05-29 14:18:09 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-29 14:18:09 -0400
commitf310642123e0d32d919c60ca3fab5acd130c4ba3 (patch)
treef3844152e2e8c0fdd01621a400f84c8a159252a0 /Documentation/feature-removal-schedule.txt
parentef1d57599dc904fdb31b8e9b5336350d21a1fde1 (diff)
parent5d4c47e0195b989f284907358bd5c268a44b91c7 (diff)
Merge branch 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6
* 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6: x86 idle: deprecate mwait_idle() and "idle=mwait" cmdline param x86 idle: deprecate "no-hlt" cmdline param x86 idle APM: deprecate CONFIG_APM_CPU_IDLE x86 idle floppy: deprecate disable_hlt() x86 idle: EXPORT_SYMBOL(default_idle, pm_idle) only when APM demands it x86 idle: clarify AMD erratum 400 workaround idle governor: Avoid lock acquisition to read pm_qos before entering idle cpuidle: menu: fixed wrapping timers at 4.294 seconds
Diffstat (limited to 'Documentation/feature-removal-schedule.txt')
-rw-r--r--Documentation/feature-removal-schedule.txt36
1 files changed, 36 insertions, 0 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index ff31b1cc50aa..1a9446b59153 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -6,6 +6,42 @@ be removed from this file.
6 6
7--------------------------- 7---------------------------
8 8
9What: x86 floppy disable_hlt
10When: 2012
11Why: ancient workaround of dubious utility clutters the
12 code used by everybody else.
13Who: Len Brown <len.brown@intel.com>
14
15---------------------------
16
17What: CONFIG_APM_CPU_IDLE, and its ability to call APM BIOS in idle
18When: 2012
19Why: This optional sub-feature of APM is of dubious reliability,
20 and ancient APM laptops are likely better served by calling HLT.
21 Deleting CONFIG_APM_CPU_IDLE allows x86 to stop exporting
22 the pm_idle function pointer to modules.
23Who: Len Brown <len.brown@intel.com>
24
25----------------------------
26
27What: x86_32 "no-hlt" cmdline param
28When: 2012
29Why: remove a branch from idle path, simplify code used by everybody.
30 This option disabled the use of HLT in idle and machine_halt()
31 for hardware that was flakey 15-years ago. Today we have
32 "idle=poll" that removed HLT from idle, and so if such a machine
33 is still running the upstream kernel, "idle=poll" is likely sufficient.
34Who: Len Brown <len.brown@intel.com>
35
36----------------------------
37
38What: x86 "idle=mwait" cmdline param
39When: 2012
40Why: simplify x86 idle code
41Who: Len Brown <len.brown@intel.com>
42
43----------------------------
44
9What: PRISM54 45What: PRISM54
10When: 2.6.34 46When: 2.6.34
11 47