Viresh Kumar 7c30ed532c cpufreq: make sure frequency transitions are serialized ...

Whenever we are changing frequency of a cpu, we are calling PRECHANGE and
POSTCHANGE notifiers. They must be serialized. i.e. PRECHANGE or POSTCHANGE
shouldn't be called twice contiguously.

This can happen due to bugs in users of __cpufreq_driver_target() or actual
cpufreq drivers who are sending these notifiers.

This patch adds some protection against this. Now, we keep track of the last
transaction and see if something went wrong.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

2013-06-27 21:49:55 +02:00

..

acpi-cpufreq.c

Merge branch 'pm-cpufreq-assorted' into pm-cpufreq

2013-06-27 21:46:45 +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

Merge branch 'pm-cpufreq-assorted' into pm-cpufreq

2013-06-27 21:46:45 +02:00

cpufreq_governor.h

cpufreq: Fix minor formatting issues

2013-06-21 01:06:34 +02:00

cpufreq_ondemand.c

cpufreq, ondemand: Remove leftover debug line

2013-05-13 14:02:31 +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 minor formatting issues

2013-06-21 01:06:34 +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

cpufreq: make sure frequency transitions are serialized

2013-06-27 21:49:55 +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

sections: fix section conflicts in drivers/cpufreq

2012-09-14 21:10:46 +02:00

longrun.c

cpufreq: Add support for x86 cpuinfo auto loading v4

2012-01-26 16:49:06 -08:00

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

[CPUFREQ] Move x86 drivers to drivers/cpufreq/

2011-05-19 18:51:07 -04:00

mperf.h

[CPUFREQ] Move x86 drivers to drivers/cpufreq/

2011-05-19 18:51:07 -04:00

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

[CPUFREQ] Move x86 drivers to drivers/cpufreq/

2011-05-19 18:51:07 -04:00

powernow-k8.c

cpufreq: powernow-k8: call CPUFREQ_POSTCHANGE notfier in error cases

2013-06-24 13:28:57 +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: 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

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: 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