Srivatsa S. Bhat
a66b2e503f
cpufreq: Preserve sysfs files across suspend/resume
...
The file permissions of cpufreq per-cpu sysfs files are not preserved
across suspend/resume because we internally go through the CPU
Hotplug path which reinitializes the file permissions on CPU online.
But the user is not supposed to know that we are using CPU hotplug
internally within suspend/resume (IOW, the kernel should not silently
wreck the user-set file permissions across a suspend cycle).
Therefore, we need to preserve the file permissions as they are
across suspend/resume.
The simplest way to achieve that is to just not touch the sysfs files
at all - ie., just ignore the CPU hotplug notifications in the
suspend/resume path (_FROZEN) in the cpufreq hotplug callback.
Reported-by: Robert Jarzmik <robert.jarzmik@intel.com>
Reported-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-05-15 21:47:17 +02:00
..
acpi-cpufreq.c
cpufreq: Notify all policy->cpus in cpufreq_notify_transition()
2013-04-02 15:24:00 +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.c
cpufreq: ARM big LITTLE: Improve print message
2013-05-12 14:04:15 +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
arm_big_little_dt.c
cpufreq: ARM big LITTLE DT: Return CPUFREQ_ETERNAL if clock-latency isn't found
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: blackfin: move cpufreq driver to drivers/cpufreq
2013-04-10 13:19:25 +02:00
cpufreq-cpu0.c
cpufreq: cpufreq-cpu0: Free parent node for error cases
2013-05-12 14:04:16 +02:00
cpufreq-nforce2.c
cpufreq: drivers: Remove unnecessary assignments of policy-> members
2013-04-02 15:26:32 +02:00
cpufreq.c
cpufreq: Preserve sysfs files across suspend/resume
2013-05-15 21:47:17 +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: governors: Fix CPUFREQ_GOV_POLICY_{INIT|EXIT} notifiers
2013-05-12 14:04:16 +02:00
cpufreq_governor.h
cpufreq: governors: Fix CPUFREQ_GOV_POLICY_{INIT|EXIT} notifiers
2013-05-12 14:04:16 +02:00
cpufreq_ondemand.c
cpufreq, ondemand: Remove leftover debug line
2013-05-13 14:02:31 +02:00
cpufreq_performance.c
cpufreq: Improve debug prints
2012-11-15 00:33:06 +01:00
cpufreq_powersave.c
cpufreq: Improve debug prints
2012-11-15 00:33:06 +01:00
cpufreq_stats.c
cpufreq: Preserve sysfs files across suspend/resume
2013-05-15 21:47:17 +02:00
cpufreq_userspace.c
cpufreq: Don't check cpu_online(policy->cpu)
2013-02-09 01:18:34 +01:00
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: move cpufreq driver to drivers/cpufreq
2013-04-08 13:02:31 +02:00
dbx500-cpufreq.c
cpufreq: dbx500: Round to closest available freq
2013-04-11 23:23:57 +02:00
e_powersaver.c
cpufreq: Notify all policy->cpus in cpufreq_notify_transition()
2013-04-02 15:24:00 +02:00
elanfreq.c
cpufreq: Notify all policy->cpus in cpufreq_notify_transition()
2013-04-02 15:24:00 +02:00
exynos-cpufreq.c
cpufreq: exynos: Remove error return even if no soc is found
2013-04-10 13:19:26 +02:00
exynos-cpufreq.h
arm-soc: cleanups
2013-02-21 14:58:40 -08:00
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
freq_table.c
cpufreq: Don't check cpu_online(policy->cpu)
2013-02-09 01:18:34 +01:00
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: ia64: move cpufreq driver to drivers/cpufreq
2013-04-10 13:19:25 +02:00
imx6q-cpufreq.c
cpufreq: Notify all policy->cpus in cpufreq_notify_transition()
2013-04-02 15:24:00 +02:00
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: use vzalloc() instead of vmalloc()/memset(0)
2013-05-14 01:39:28 +02:00
Kconfig
cpufreq: Fix incorrect dependecies for ARM SA11xx drivers
2013-05-12 14:04:16 +02:00
Kconfig.arm
cpufreq: ARM big LITTLE: Fix Kconfig entries
2013-05-12 14:04:16 +02:00
Kconfig.powerpc
cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq
2013-04-10 13:19:26 +02:00
Kconfig.x86
cpufreq: AMD "frequency sensitivity feedback" powersave bias for ondemand governor
2013-04-10 13:19:26 +02:00
kirkwood-cpufreq.c
cpufreq / kirkwood: don't check resource with devm_ioremap_resource
2013-05-12 14:04:17 +02:00
longhaul.c
cpufreq: Notify all policy->cpus in cpufreq_notify_transition()
2013-04-02 15:24:00 +02:00
longhaul.h
longrun.c
loongson2_cpufreq.c
cpufreq: mips: move cpufreq driver to drivers/cpufreq
2013-04-10 13:19:25 +02:00
Makefile
cpufreq: exynos: Add cpufreq driver for exynos5440
2013-04-10 13:19:26 +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: instantiate omap-cpufreq as a platform_driver
2013-04-10 13:41:00 +02:00
p4-clockmod.c
cpufreq: Don't check if cpu is online/offline for cpufreq callbacks
2013-04-02 15:26:32 +02:00
pcc-cpufreq.c
cpufreq: Notify all policy->cpus in cpufreq_notify_transition()
2013-04-02 15:24:00 +02:00
powernow-k6.c
cpufreq: Notify all policy->cpus in cpufreq_notify_transition()
2013-04-02 15:24:00 +02:00
powernow-k7.c
cpufreq: Notify all policy->cpus in cpufreq_notify_transition()
2013-04-02 15:24:00 +02:00
powernow-k7.h
powernow-k8.c
cpufreq: Don't check if cpu is online/offline for cpufreq callbacks
2013-04-02 15:26:32 +02:00
powernow-k8.h
ppc_cbe_cpufreq.c
cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq
2013-04-10 13:19:26 +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_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
pxa2xx-cpufreq.c
cpufreq: pxa2xx: initialize variables
2013-04-25 20:11:14 +02:00
pxa3xx-cpufreq.c
cpufreq: pxa3xx: move cpufreq driver to drivers/cpufreq
2013-04-08 13:02:31 +02:00
s3c64xx-cpufreq.c
cpufreq: Notify all policy->cpus in cpufreq_notify_transition()
2013-04-02 15:24:00 +02:00
s3c2416-cpufreq.c
cpufreq: Notify all policy->cpus in cpufreq_notify_transition()
2013-04-02 15:24:00 +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: Notify all policy->cpus in cpufreq_notify_transition()
2013-04-02 15:24:00 +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: sparc: move cpufreq driver to drivers/cpufreq
2013-04-10 13:19:26 +02:00
sparc-us3-cpufreq.c
cpufreq: sparc: move cpufreq driver to drivers/cpufreq
2013-04-10 13:19:26 +02:00
spear-cpufreq.c
cpufreq: Notify all policy->cpus in cpufreq_notify_transition()
2013-04-02 15:24:00 +02:00
speedstep-centrino.c
cpufreq: Don't check if cpu is online/offline for cpufreq callbacks
2013-04-02 15:26:32 +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
cpufreq: tegra: Move driver to drivers/cpufreq
2013-04-08 13:02:30 +02:00
unicore2-cpufreq.c
cpufreq: unicore2: move cpufreq driver to drivers/cpufreq
2013-04-10 13:19:26 +02:00