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ad7722dab7
linux/drivers/cpufreq
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viresh kumar ad7722dab7 cpufreq: create per policy rwsem instead of per CPU cpu_policy_rwsem 
We have per-CPU cpu_policy_rwsem for cpufreq core, but we never use
all of them. We always use rwsem of policy->cpu and so we can
actually make this rwsem per policy instead.

This patch does this change. With this change other tricky situations
are also avoided now, like which lock to take while we are changing
policy->cpu, etc.

Suggested-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-25 23:54:12 +02:00
..
acpi-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
amd_freq_sensitivity.c cpufreq: AMD "frequency sensitivity feedback" powersave bias for ondemand governor 2013-04-10 13:19:26 +02:00
arm_big_little_dt.c PM / OPP: rename header to linux/pm_opp.h 2013-10-25 22:33:23 +02:00
arm_big_little.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
arm_big_little.h cpufreq: ARM big LITTLE: Move cpu_to_cluster() to arm_big_little.h 2013-05-12 14:04:15 +02:00
at32ap-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
blackfin-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
cpufreq_conservative.c cpufreq: governors: Remove duplicate check of target freq in supported range 2013-08-28 22:03:02 +02:00
cpufreq_governor.c cpufreq: Don't use smp_processor_id() in preemptible context 2013-08-29 22:19:23 +02:00
cpufreq_governor.h cpufreq: use cpufreq_driver->flags to mark CPUFREQ_HAVE_GOVERNOR_PER_POLICY 2013-10-16 00:50:23 +02:00
cpufreq_ondemand.c cpufreq: governors: Remove duplicate check of target freq in supported range 2013-08-28 22:03:02 +02:00
cpufreq_performance.c cpufreq: Clean up header files included in the core 2013-08-07 23:34:09 +02:00
cpufreq_powersave.c cpufreq: Clean up header files included in the core 2013-08-07 23:34:09 +02:00
cpufreq_stats.c cpufreq: Fix wrong time unit conversion 2013-09-10 02:49:46 +02:00
cpufreq_userspace.c cpufreq / governor: Remove fossil comment 2013-10-17 23:00:20 +02:00
cpufreq-cpu0.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
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: create per policy rwsem instead of per CPU cpu_policy_rwsem 2013-10-25 23:54:12 +02:00
cris-artpec3-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
cris-etraxfs-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
davinci-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
dbx500-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
e_powersaver.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
elanfreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
exynos4x12-cpufreq.c cpufreq: exynos4x12: Use the common clock framework to set APLL clock rate 2013-10-17 13:52:48 +02:00
exynos4210-cpufreq.c cpufreq: exynos4210: Use the common clock framework to set APLL clock rate 2013-10-17 13:52:49 +02:00
exynos5250-cpufreq.c arm-soc: cleanups 2013-02-21 14:58:40 -08:00
exynos5440-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
exynos-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
exynos-cpufreq.h cpufreq: fix EXYNOS drivers selection 2013-08-12 12:00:21 +05:30
freq_table.c cpufreq: define generic .attr, .exit() and .verify() routines 2013-10-16 00:50:23 +02:00
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: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
imx6q-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
integrator-cpufreq.c cpufreq: integrator: don't initialize part of policy set by core 2013-10-16 00:50:30 +02:00
intel_pstate.c intel_pstate: Add Baytrail support 2013-10-25 23:46:10 +02:00
Kconfig cpufreq: remove CONFIG_CPU_FREQ_TABLE 2013-10-16 00:50:33 +02:00
Kconfig.arm cpufreq: remove CONFIG_CPU_FREQ_TABLE 2013-10-16 00:50:33 +02:00
Kconfig.powerpc cpufreq: remove CONFIG_CPU_FREQ_TABLE 2013-10-16 00:50:33 +02:00
Kconfig.x86 cpufreq: remove CONFIG_CPU_FREQ_TABLE 2013-10-16 00:50:33 +02:00
kirkwood-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
longhaul.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
longhaul.h cpufreq: delete __cpuinit usage from all cpufreq files 2013-07-14 19:36:57 -04:00
longrun.c cpufreq: add new routine cpufreq_verify_within_cpu_limits() 2013-10-16 00:50:23 +02:00
loongson2_cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
Makefile cpufreq: remove CONFIG_CPU_FREQ_TABLE 2013-10-16 00:50:33 +02:00
maple-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
omap-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
p4-clockmod.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
pasemi-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
pcc-cpufreq.c cpufreq: pcc: don't initialize part of policy set by core 2013-10-16 00:50:31 +02:00
pmac32-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
pmac64-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
powernow-k6.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
powernow-k7.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
powernow-k7.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
powernow-k8.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
powernow-k8.h cpufreq: Remove support for hardware P-state chips from powernow-k8 2012-09-09 22:05:30 +02:00
ppc_cbe_cpufreq_pervasive.c cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00
ppc_cbe_cpufreq_pmi.c cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00
ppc_cbe_cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
ppc_cbe_cpufreq.h cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00
ppc-corenet-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
pxa2xx-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
pxa3xx-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
s3c24xx-cpufreq-debugfs.c cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq 2013-05-20 23:04:28 +09:00
s3c24xx-cpufreq.c cpufreq: s3c: use cpufreq_generic_init() 2013-10-16 00:50:35 +02:00
s3c64xx-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
s3c2410-cpufreq.c cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq 2013-05-20 23:04:28 +09:00
s3c2412-cpufreq.c cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq 2013-05-20 23:04:28 +09:00
s3c2416-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
s3c2440-cpufreq.c cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq 2013-05-20 23:04:28 +09:00
s5pv210-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
sa1100-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
sa1110-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
sc520_freq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
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: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
sparc-us3-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
spear-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
speedstep-centrino.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
speedstep-ich.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
speedstep-lib.c cpufreq: Add support for x86 cpuinfo auto loading v4 2012-01-26 16:49:06 -08:00
speedstep-lib.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
speedstep-smi.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
tegra-cpufreq.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
unicore2-cpufreq.c cpufreq: unicore2: don't initialize part of policy set by core 2013-10-16 00:50:32 +02:00