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android_kernel_motorola_sm6375/drivers/cpufreq
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Filename Latest commit message Latest commit date
Srivatsa S. Bhat 0197fbd212 acpi-cpufreq: Fix CPU hotplug callback registration 
Subsystems that want to register CPU hotplug callbacks, as well as perform
initialization for the CPUs that are already online, often do it as shown
below:

	get_online_cpus();

	for_each_online_cpu(cpu)
		init_cpu(cpu);

	register_cpu_notifier(&foobar_cpu_notifier);

	put_online_cpus();

This is wrong, since it is prone to ABBA deadlocks involving the
cpu_add_remove_lock and the cpu_hotplug.lock (when running concurrently
with CPU hotplug operations).

Instead, the correct and race-free way of performing the callback
registration is:

	cpu_notifier_register_begin();

	for_each_online_cpu(cpu)
		init_cpu(cpu);

	/* Note the use of the double underscored version of the API */
	__register_cpu_notifier(&foobar_cpu_notifier);

	cpu_notifier_register_done();

Fix the acpi-cpufreq code by using this latter form of callback registration.

Cc: Ingo Molnar <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
Signed-off-by: Srivatsa S. Bhat <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
2014-03-20 13:43:45 +01:00
..
acpi-cpufreq.c acpi-cpufreq: Fix CPU hotplug callback registration 2014-03-20 13:43:45 +01:00
amd_freq_sensitivity.c
arm_big_little.c cpufreq: Mark ARM drivers with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag 2014-01-06 14:17:25 +01:00
arm_big_little.h cpufreq: arm_big_little: add in-kernel switching (IKS) support 2013-10-31 00:10:53 +01:00
arm_big_little_dt.c PM / OPP: rename header to linux/pm_opp.h 2013-10-25 22:33:23 +02:00
at32ap-cpufreq.c cpufreq: introduce cpufreq_generic_get() routine 2014-01-17 02:00:44 +01:00
blackfin-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
cpufreq-cpu0.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2014-01-24 17:13:49 -08:00
cpufreq-nforce2.c cpufreq: nforce2: don't initialize part of policy set by core 2013-10-16 00:50:29 +02:00
cpufreq.c cpufreq: Skip current frequency initialization for ->setpolicy drivers 2014-03-13 00:37:16 +01:00
cpufreq_conservative.c cpufreq: conservative: set requested_freq to policy max when it is over policy max 2013-11-12 23:18:20 +01:00
cpufreq_governor.c cpufreq: Fix timer/workqueue corruption by protecting reading governor_enabled 2014-01-06 01:22:02 +01:00
cpufreq_governor.h cpufreq: Fix timer/workqueue corruption by protecting reading governor_enabled 2014-01-06 01:22:02 +01:00
cpufreq_ondemand.c cpufreq: ondemand: Remove redundant return statement 2013-11-01 00:44:34 +01:00
cpufreq_performance.c
cpufreq_powersave.c
cpufreq_stats.c cpufreq: stats: create sysfs entries when cpufreq_stats is a module 2014-01-17 02:00:44 +01:00
cpufreq_userspace.c cpufreq / governor: Remove fossil comment 2013-10-17 23:00:20 +02:00
cris-artpec3-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
cris-etraxfs-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
davinci-cpufreq.c cpufreq: introduce cpufreq_generic_get() routine 2014-01-17 02:00:44 +01:00
dbx500-cpufreq.c cpufreq: introduce cpufreq_generic_get() routine 2014-01-17 02:00:44 +01:00
e_powersaver.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
elanfreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
exynos-cpufreq.c cpufreq: exynos: Extend Exynos cpufreq driver to support boost 2014-01-17 02:00:45 +01:00
exynos-cpufreq.h cpufreq: exynos: move definitions for exynos-cpufreq into drivers/cpufreq/ 2013-12-19 05:21:18 +09:00
exynos4x12-cpufreq.c ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
exynos4210-cpufreq.c Samsung cleanup 2nd for v3.14 2013-12-28 15:12:07 -08:00
exynos5250-cpufreq.c ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
exynos5440-cpufreq.c cpufreq: introduce cpufreq_generic_get() routine 2014-01-17 02:00:44 +01:00
freq_table.c cpufreq: Add boost frequency support in core 2014-01-17 02:00:44 +01:00
gx-suspmod.c cpufreq: gx: don't initialize part of policy set by core 2013-10-16 00:50:30 +02:00
highbank-cpufreq.c cpufreq: highbank-cpufreq: Enable Midway/ECX-2000 2013-10-17 00:53:08 +02:00
ia64-acpi-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
imx6q-cpufreq.c cpufreq: introduce cpufreq_generic_get() routine 2014-01-17 02:00:44 +01:00
integrator-cpufreq.c cpufreq: Mark ARM drivers with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag 2014-01-06 14:17:25 +01:00
intel_pstate.c intel_pstate: Change busy calculation to use fixed point math. 2014-02-26 00:56:49 +01:00
Kconfig Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2014-01-24 17:13:49 -08:00
Kconfig.arm cpufreq / boost: Kconfig: Support for software-managed BOOST 2014-01-17 02:00:45 +01:00
Kconfig.powerpc cpufreq: remove CONFIG_CPU_FREQ_TABLE 2013-10-16 00:50:33 +02:00
Kconfig.x86 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-11-15 16:47:22 -08:00
kirkwood-cpufreq.c cpufreq: Mark ARM drivers with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag 2014-01-06 14:17:25 +01:00
longhaul.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
longhaul.h
longrun.c
loongson2_cpufreq.c cpufreq: introduce cpufreq_generic_get() routine 2014-01-17 02:00:44 +01:00
Makefile cpufreq: arm_big_little: add vexpress SPC interface driver 2013-10-30 00:48:26 +01:00
maple-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
omap-cpufreq.c cpufreq: introduce cpufreq_generic_get() routine 2014-01-17 02:00:44 +01:00
p4-clockmod.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
pasemi-cpufreq.c ACPI and power management updates for 3.13-rc1 2013-11-14 13:41:48 +09:00
pcc-cpufreq.c cpufreq: send new set of notification for transition failures 2014-01-06 01:43:44 +01:00
pmac32-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
pmac64-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
powernow-k6.c powernow-k6: reorder frequencies 2014-01-06 15:53:07 +01:00
powernow-k7.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
powernow-k7.h
powernow-k8.c cpufreq: powernow-k8: Initialize per-cpu data-structures properly 2014-02-19 01:04:56 +01:00
powernow-k8.h
ppc-corenet-cpufreq.c cpufreq: introduce cpufreq_generic_get() routine 2014-01-17 02:00:44 +01:00
ppc_cbe_cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
ppc_cbe_cpufreq.h
ppc_cbe_cpufreq_pervasive.c
ppc_cbe_cpufreq_pmi.c
pxa2xx-cpufreq.c cpufreq: Mark ARM drivers with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag 2014-01-06 14:17:25 +01:00
pxa3xx-cpufreq.c cpufreq: Mark ARM drivers with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag 2014-01-06 14:17:25 +01:00
s3c24xx-cpufreq-debugfs.c
s3c24xx-cpufreq.c cpufreq: introduce cpufreq_generic_get() routine 2014-01-17 02:00:44 +01:00
s3c64xx-cpufreq.c cpufreq: introduce cpufreq_generic_get() routine 2014-01-17 02:00:44 +01:00
s3c2410-cpufreq.c
s3c2412-cpufreq.c
s3c2416-cpufreq.c cpufreq: Mark ARM drivers with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag 2014-01-06 14:17:25 +01:00
s3c2440-cpufreq.c cpufreq: s3c2440: Staticize local variables 2014-01-06 01:18:33 +01:00
s5pv210-cpufreq.c cpufreq: introduce cpufreq_generic_get() routine 2014-01-17 02:00:44 +01:00
sa1100-cpufreq.c cpufreq: Mark ARM drivers with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag 2014-01-06 14:17:25 +01:00
sa1110-cpufreq.c cpufreq: Mark ARM drivers with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag 2014-01-06 14:17:25 +01:00
sc520_freq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
sh-cpufreq.c cpufreq: sh: don't initialize part of policy set by core 2013-10-16 00:50:32 +02:00
sparc-us2e-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
sparc-us3-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
spear-cpufreq.c cpufreq: introduce cpufreq_generic_get() routine 2014-01-17 02:00:44 +01:00
speedstep-centrino.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
speedstep-ich.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
speedstep-lib.c
speedstep-lib.h
speedstep-smi.c cpufreq: speedstep: remove unused speedstep_get_state 2014-01-17 02:00:43 +01:00
tegra-cpufreq.c cpufreq: introduce cpufreq_generic_get() routine 2014-01-17 02:00:44 +01:00
unicore2-cpufreq.c cpufreq: introduce cpufreq_generic_get() routine 2014-01-17 02:00:44 +01:00
vexpress-spc-cpufreq.c cpufreq: arm_big_little: add vexpress SPC interface driver 2013-10-30 00:48:26 +01:00