AcoSail/kernel_optimize_test
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f51e1eb63d
kernel_optimize_test/drivers/cpufreq
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Srivatsa S. Bhat f51e1eb63d cpufreq: Fix cpufreq regression after suspend/resume 
Toralf Förster reported that the cpufreq ondemand governor behaves erratically
(doesn't scale well) after a suspend/resume cycle. The problem was that the
cpufreq subsystem's idea of the cpu frequencies differed from the actual
frequencies set in the hardware after a suspend/resume cycle. Toralf bisected
the problem to commit a66b2e5 (cpufreq: Preserve sysfs files across
suspend/resume).

Among other (harmless) things, that commit skipped the call to
cpufreq_update_policy() in the resume path. But cpufreq_update_policy() plays
an important role during resume, because it is responsible for checking if
the BIOS changed the cpu frequencies behind our back and resynchronize the
cpufreq subsystem's knowledge of the cpu frequencies, and update them
accordingly.

So, restore the call to cpufreq_update_policy() in the resume path to fix
the cpufreq regression.

Reported-and-tested-by: Toralf Förster <toralf.foerster@gmx.de>
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: 3.10+ <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-01 00:40:55 +02:00
..
acpi-cpufreq.c acpi-cpufreq: Add new sysfs attribute freqdomain_cpus 2013-06-27 21:51:09 +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 cpufreq: arm_big_little_dt: Instantiate as platform_driver 2013-05-22 12:43:33 +02:00
arm_big_little.c cpufreq: arm-big-little: call CPUFREQ_POSTCHANGE notfier in error cases 2013-06-24 18:18:58 +05:30
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: AVR32: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:25 +02:00
blackfin-cpufreq.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
cpufreq_conservative.c cpufreq: conservative: Use an inline function to evaluate freq_target 2013-04-01 01:11:36 +02:00
cpufreq_governor.c cpufreq: don't leave stale policy pointer in cdbs->cur_policy 2013-06-27 22:02:12 +02:00
cpufreq_governor.h cpufreq: Fix minor formatting issues 2013-06-21 01:06:34 +02:00
cpufreq_ondemand.c cpufreq: fix NULL pointer deference at od_set_powersave_bias() 2013-06-25 22:42:37 +02:00
cpufreq_performance.c cpufreq: Fix minor formatting issues 2013-06-21 01:06:34 +02:00
cpufreq_powersave.c cpufreq: Fix minor formatting issues 2013-06-21 01:06:34 +02:00
cpufreq_stats.c cpufreq: Fix cpufreq regression after suspend/resume 2013-07-01 00:40:55 +02:00
cpufreq_userspace.c cpufreq: Fix minor formatting issues 2013-06-21 01:06:34 +02:00
cpufreq-cpu0.c cpufreq: cpufreq-cpu0: use the exact frequency for clk_set_rate() 2013-06-05 13:51:29 +02:00
cpufreq-nforce2.c cpufreq: drivers: Remove unnecessary assignments of policy-> members 2013-04-02 15:26:32 +02:00
cpufreq.c acpi-cpufreq: Add new sysfs attribute freqdomain_cpus 2013-06-27 21:51:09 +02:00
cris-artpec3-cpufreq.c cpufreq: cris: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:25 +02:00
cris-etraxfs-cpufreq.c cpufreq: cris: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:25 +02:00
davinci-cpufreq.c cpufreq: davinci: call CPUFREQ_POSTCHANGE notfier in error cases 2013-06-24 18:18:58 +05:30
dbx500-cpufreq.c cpufreq: dbx500: call CPUFREQ_POSTCHANGE notfier in error cases 2013-06-24 18:18:59 +05:30
e_powersaver.c cpufreq: e_powersaver: call CPUFREQ_POSTCHANGE notfier in error cases 2013-06-24 13:19:27 +02:00
elanfreq.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
exynos4x12-cpufreq.c arm-soc: cleanups 2013-02-21 14:58:40 -08:00
exynos4210-cpufreq.c arm-soc: cleanups 2013-02-21 14:58:40 -08:00
exynos5250-cpufreq.c arm-soc: cleanups 2013-02-21 14:58:40 -08:00
exynos5440-cpufreq.c cpufreq: exynos5440: Protect OPP search calls with RCU lock 2013-04-22 00:24:37 +02:00
exynos-cpufreq.c cpufreq: exynos: call CPUFREQ_POSTCHANGE notfier in error cases 2013-06-24 18:18:59 +05:30
exynos-cpufreq.h arm-soc: cleanups 2013-02-21 14:58:40 -08:00
freq_table.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
gx-suspmod.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
highbank-cpufreq.c cpufreq: highbank: do not initialize array with a loop 2013-03-04 14:23:11 +01:00
ia64-acpi-cpufreq.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
imx6q-cpufreq.c cpufreq: imx6q: call CPUFREQ_POSTCHANGE notfier in error cases 2013-06-24 18:19:00 +05:30
integrator-cpufreq.c cpufreq: integrator: move cpufreq driver to drivers/cpufreq 2013-04-08 13:02:31 +02:00
intel_pstate.c cpufreq / intel_pstate: Add additional supported CPU ID 2013-05-22 00:28:44 +02:00
Kconfig cpufreq: Fix incorrect dependecies for ARM SA11xx drivers 2013-05-12 14:04:16 +02:00
Kconfig.arm Merge branch 'pm-cpufreq-assorted' into pm-cpufreq 2013-06-27 21:46:45 +02:00
Kconfig.powerpc Merge branch 'pm-cpufreq-assorted' into pm-cpufreq 2013-06-27 21:46:45 +02:00
Kconfig.x86 cpufreq: X86_AMD_FREQ_SENSITIVITY: select CPU_FREQ_TABLE 2013-06-18 13:53:11 +05:30
kirkwood-cpufreq.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
longhaul.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
longhaul.h
longrun.c
loongson2_cpufreq.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
Makefile Merge branch 'pm-cpufreq-assorted' into pm-cpufreq 2013-06-27 21:46:45 +02:00
maple-cpufreq.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
mperf.c
mperf.h
omap-cpufreq.c cpufreq: omap: call CPUFREQ_POSTCHANGE notfier in error cases 2013-06-24 18:19:00 +05:30
p4-clockmod.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
pasemi-cpufreq.c cpufreq: powerpc: move cpufreq driver to drivers/cpufreq 2013-06-07 13:44:39 +02:00
pcc-cpufreq.c cpufreq: pcc: call CPUFREQ_POSTCHANGE notfier in error cases 2013-06-24 13:26:39 +02:00
pmac32-cpufreq.c cpufreq: powerpc: move cpufreq driver to drivers/cpufreq 2013-06-07 13:44:39 +02:00
pmac64-cpufreq.c cpufreq: powerpc: move cpufreq driver to drivers/cpufreq 2013-06-07 13:44:39 +02:00
powernow-k6.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
powernow-k7.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
powernow-k7.h
powernow-k8.c cpufreq: powernow-k8: call CPUFREQ_POSTCHANGE notfier in error cases 2013-06-24 13:28:57 +02:00
powernow-k8.h
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: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +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: powerpc: Add cpufreq driver for Freescale e500mc SoCs 2013-06-05 14:19:28 +02:00
pxa2xx-cpufreq.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
pxa3xx-cpufreq.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
s3c64xx-cpufreq.c Merge branch 'pm-cpufreq-arm' into pm-cpufreq 2013-06-27 21:47:03 +02:00
s3c2416-cpufreq.c Merge branch 'pm-cpufreq-arm' into pm-cpufreq 2013-06-27 21:47:03 +02:00
s5pv210-cpufreq.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
sa1100-cpufreq.c cpufreq: sa11x0: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:24 +02:00
sa1110-cpufreq.c cpufreq: sa11x0: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:24 +02:00
sc520_freq.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
sh-cpufreq.c cpufreq: sh: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:25 +02:00
sparc-us2e-cpufreq.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
sparc-us3-cpufreq.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
spear-cpufreq.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
speedstep-centrino.c cpufreq: rename index as driver_data in cpufreq_frequency_table 2013-06-04 14:25:59 +02:00
speedstep-ich.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
speedstep-lib.c
speedstep-lib.h
speedstep-smi.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
tegra-cpufreq.c Merge branch 'pm-cpufreq-arm' into pm-cpufreq 2013-06-27 21:47:03 +02:00
unicore2-cpufreq.c cpufreq: unicore2: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00