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Thomas Gleixner ade9f4ba0d cpufreq/sh: Replace racy task affinity logic 
[ Upstream commit 205dcc1ecb ]

The target() callback must run on the affected cpu. This is achieved by
temporarily setting the affinity of the calling thread to the requested CPU
and reset it to the original affinity afterwards.

That's racy vs. concurrent affinity settings for that thread resulting in
code executing on the wrong CPU.

Replace it by work_on_cpu(). All call pathes which invoke the callbacks are
already protected against CPU hotplug.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: linux-pm@vger.kernel.org
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Tejun Heo <tj@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Len Brown <lenb@kernel.org>
Link: http://lkml.kernel.org/r/20170412201042.958216363@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-24 11:00:10 +01:00
..
acpi-cpufreq.c
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
2018-02-22 15:43:55 +01:00
amd_freq_sensitivity.c
cpufreq: Reuse new freq-table helpers
2016-07-07 00:14:27 +02:00
arm_big_little_dt.c
cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table
2016-05-05 01:40:04 +02:00
arm_big_little.c
cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table
2016-05-05 01:40:04 +02:00
arm_big_little.h
cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table
2016-05-05 01:40:04 +02:00
at32ap-cpufreq.c
…
blackfin-cpufreq.c
…
cppc_cpufreq.c
Merge tag 'pm-extra-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2016-10-14 12:46:13 -07:00
cpufreq_conservative.c
cpufreq: conservative: Allow down_threshold to take values from 1 to 10
2017-06-24 07:11:12 +02:00
cpufreq_governor_attr_set.c
cpufreq: governor: Move abstract gov_attr_set code to seperate file
2016-04-02 01:09:01 +02:00
cpufreq_governor.c
cpufreq / sched: Pass flags to cpufreq_update_util()
2016-08-16 22:14:55 +02:00
cpufreq_governor.h
cpufreq: Drop the 'initialized' field from struct cpufreq_governor
2016-06-02 23:24:39 +02:00
cpufreq_ondemand.c
cpufreq: Reuse new freq-table helpers
2016-07-07 00:14:27 +02:00
cpufreq_ondemand.h
cpufreq: ondemand: Don't keep a copy of freq_table pointer
2016-06-09 00:58:06 +02:00
cpufreq_performance.c
cpufreq: governor: Get rid of governor events
2016-06-02 23:24:15 +02:00
cpufreq_powersave.c
cpufreq: governor: Get rid of governor events
2016-06-02 23:24:15 +02:00
cpufreq_stats.c
cpufreq: Remove cpufreq_frequency_get_table()
2016-06-09 00:58:05 +02:00
cpufreq_userspace.c
cpufreq: governor: Get rid of governor events
2016-06-02 23:24:15 +02:00
cpufreq-dt-platdev.c
cpufreq: ti: Use generic platdev driver
2016-09-16 23:57:04 +02:00
cpufreq-dt.c
PM / OPP: Pass opp_table to dev_pm_opp_put_regulator()
2017-01-06 10:40:15 +01:00
cpufreq-dt.h
cpufreq: dt: Support governor tunables per policy
2016-09-13 02:39:12 +02:00
cpufreq-nforce2.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
cpufreq.c
cpufreq: Fix creation of symbolic links to policy directories
2017-12-25 14:23:42 +01:00
cris-artpec3-cpufreq.c
…
cris-etraxfs-cpufreq.c
…
davinci-cpufreq.c
cpufreq: davinci: Reuse cpufreq_generic_frequency_table_verify()
2016-06-09 00:58:07 +02:00
dbx500-cpufreq.c
…
e_powersaver.c
cpufreq: e_powersaver: Use IS_ENABLED() instead of checking for built-in or module
2016-04-27 22:42:34 +02:00
elanfreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
exynos5440-cpufreq.c
…
freq_table.c
cpufreq: Handle sorted frequency tables more efficiently
2016-07-07 00:13:20 +02:00
gx-suspmod.c
…
highbank-cpufreq.c
…
ia64-acpi-cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
imx6q-cpufreq.c
…
integrator-cpufreq.c
…
intel_pstate.c
cpufreq: intel_pstate: Update pid_params.sample_rate_ns in pid_param_set()
2017-10-08 10:26:10 +02:00
Kconfig
cpufreq: Add Loongson machine dependencies
2018-02-03 17:05:36 +01:00
Kconfig.arm
cpufreq: CPPC: add ACPI_PROCESSOR dependency
2017-10-21 17:21:38 +02:00
Kconfig.powerpc
…
Kconfig.x86
cpufreq: intel_pstate: Enforce _PPC limits
2016-04-28 01:01:39 +02:00
kirkwood-cpufreq.c
cpufreq: kirkwood: add missing \n to end of dev_err messages
2016-09-26 15:10:58 +02:00
longhaul.c
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
2018-02-22 15:43:55 +01:00
longhaul.h
…
longrun.c
…
loongson1-cpufreq.c
CPUFREQ: Loongson1: Replace goto out with return in ls1x_cpufreq_probe()
2016-05-13 14:02:08 +02:00
loongson2_cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
Makefile
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
2016-05-19 10:02:26 -07:00
maple-cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
mt8173-cpufreq.c
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
2016-05-26 09:23:43 -07:00
mvebu-cpufreq.c
cpufreq: mvebu: fix integer to pointer cast
2016-06-13 23:49:43 +02:00
omap-cpufreq.c
remove lots of IS_ERR_VALUE abuses
2016-05-27 15:26:11 -07:00
p4-clockmod.c
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
2018-02-22 15:43:55 +01:00
pasemi-cpufreq.c
…
pcc-cpufreq.c
Revert "cpufreq: pcc-cpufreq: update default value of cpuinfo_transition_latency"
2016-07-22 23:51:06 +02:00
pmac32-cpufreq.c
Merge tag 'powerpc-4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2016-05-20 10:12:41 -07:00
pmac64-cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
powernow-k6.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
powernow-k7.c
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
2018-02-22 15:43:55 +01:00
powernow-k7.h
…
powernow-k8.c
…
powernow-k8.h
…
powernv-cpufreq.c
cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin
2018-02-22 15:43:52 +01:00
ppc_cbe_cpufreq_pervasive.c
…
ppc_cbe_cpufreq_pmi.c
cpufreq: Remove cpufreq_frequency_get_table()
2016-06-09 00:58:05 +02:00
ppc_cbe_cpufreq.c
…
ppc_cbe_cpufreq.h
cpufreq: e_powersaver: Use IS_ENABLED() instead of checking for built-in or module
2016-04-27 22:42:34 +02:00
pxa2xx-cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
pxa3xx-cpufreq.c
…
qoriq-cpufreq.c
cpufreq: qoriq: Fix cooling device registration issue during suspend
2016-04-25 16:07:02 +02:00
s3c24xx-cpufreq-debugfs.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
s3c24xx-cpufreq.c
cpufreq: s3c24xx: Fix broken s3c_cpufreq_init()
2018-03-11 16:21:28 +01:00
s3c64xx-cpufreq.c
…
s3c2410-cpufreq.c
…
s3c2412-cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
s3c2416-cpufreq.c
cpufreq: s3c2416: double free on driver init error path
2017-07-05 14:40:30 +02:00
s3c2440-cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
s5pv210-cpufreq.c
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2016-08-01 18:36:01 -04:00
sa1100-cpufreq.c
…
sa1110-cpufreq.c
ARM: sa1100: move StrongARM CPU ID checks to cputype.h
2016-08-23 10:25:17 +01:00
sc520_freq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
scpi-cpufreq.c
cpufreq-SCPI: Delete unnecessary assignment for the field "owner"
2016-08-18 03:42:32 +02:00
sfi-cpufreq.c
…
sh-cpufreq.c
cpufreq/sh: Replace racy task affinity logic
2018-03-24 11:00:10 +01:00
sparc-us2e-cpufreq.c
…
sparc-us3-cpufreq.c
…
spear-cpufreq.c
…
speedstep-centrino.c
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
2018-02-22 15:43:55 +01:00
speedstep-ich.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
speedstep-lib.c
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
2018-02-22 15:43:55 +01:00
speedstep-lib.h
…
speedstep-smi.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
sti-cpufreq.c
cpufreq: st: add missing \n to end of dev_err message
2016-09-26 15:11:42 +02:00
tegra20-cpufreq.c
…
tegra124-cpufreq.c
cpufreq: tegra124: No need of setting platform-data
2016-04-09 01:12:09 +02:00
unicore2-cpufreq.c
…
vexpress-spc-cpufreq.c
cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table
2016-05-05 01:40:04 +02:00