xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
8a10c06a20ec8097a68fd7a4a1c0e285095b4d2f
android_kernel_xiaomi_sm8450/drivers/cpufreq
History
Denis Kirjanov 8a10c06a20 cpufreq: powernv: Disable preemption while checking CPU throttling state 
With preemption turned on we can read incorrect throttling state
while being switched to CPU on a different chip.

 BUG: using smp_processor_id() in preemptible [00000000] code: cat/7343
 caller is .powernv_cpufreq_throttle_check+0x2c/0x710
 CPU: 13 PID: 7343 Comm: cat Not tainted 4.8.0-rc5-dirty #1
 Call Trace:
 [c0000007d25b75b0] [c000000000971378] .dump_stack+0xe4/0x150 (unreliable)
 [c0000007d25b7640] [c0000000005162e4] .check_preemption_disabled+0x134/0x150
 [c0000007d25b76e0] [c0000000007b63ac] .powernv_cpufreq_throttle_check+0x2c/0x710
 [c0000007d25b7790] [c0000000007b6d18] .powernv_cpufreq_target_index+0x288/0x360
 [c0000007d25b7870] [c0000000007acee4] .__cpufreq_driver_target+0x394/0x8c0
 [c0000007d25b7920] [c0000000007b22ac] .cpufreq_set+0x7c/0xd0
 [c0000007d25b79b0] [c0000000007adf50] .store_scaling_setspeed+0x80/0xc0
 [c0000007d25b7a40] [c0000000007ae270] .store+0xa0/0x100
 [c0000007d25b7ae0] [c0000000003566e8] .sysfs_kf_write+0x88/0xb0
 [c0000007d25b7b70] [c0000000003553b8] .kernfs_fop_write+0x178/0x260
 [c0000007d25b7c10] [c0000000002ac3cc] .__vfs_write+0x3c/0x1c0
 [c0000007d25b7cf0] [c0000000002ad584] .vfs_write+0xc4/0x230
 [c0000007d25b7d90] [c0000000002aeef8] .SyS_write+0x58/0x100
 [c0000007d25b7e30] [c00000000000bfec] system_call+0x38/0xfc

Fixes: 09a972d162 (cpufreq: powernv: Report cpu frequency throttling)
Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-11-16 23:29:59 +01:00
..
acpi-cpufreq.c
cpufreq: acpi-cpufreq: use cached frequency mapping when possible
2016-07-21 22:28:32 +02:00
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
cpufreq: at32ap: don't declare local variable as static
2014-04-07 14:31:33 +02:00
blackfin-cpufreq.c
blackfin-cpufreq: Mark cpu_set_cclk() as static
2015-12-28 01:51:36 +01:00
brcmstb-avs-cpufreq.c
cpufreq: brcmstb-avs-cpufreq: make symbol brcm_avs_cpufreq_attr static
2016-11-11 01:32:53 +01:00
cppc_cpufreq.c
cpufreq / CPPC: Add MODULE_DEVICE_TABLE for cppc_cpufreq driver
2016-10-21 15:11:23 +02:00
cpufreq_conservative.c
cpufreq: conservative: Fix comment explaining frequency updates
2016-11-16 23:15:56 +01:00
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: conservative: Decrease frequency faster for deferred updates
2016-11-16 23:15:56 +01:00
cpufreq_governor.h
cpufreq: conservative: Decrease frequency faster for deferred updates
2016-11-16 23:15:56 +01:00
cpufreq_ondemand.c
cpufreq: governor: Don't use 'timer' keyword
2016-11-11 01:48:33 +01:00
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: stats: New sysfs attribute for clearing statistics
2016-11-11 01:51:11 +01:00
cpufreq_userspace.c
cpufreq: governor: Get rid of governor events
2016-06-02 23:24:15 +02:00
cpufreq-dt-platdev.c
cpufreq: pxa: use generic platdev driver for device-tree
2016-11-11 02:08:42 +01:00
cpufreq-dt.c
cpufreq: dt: Support governor tunables per policy
2016-09-13 02:39:12 +02:00
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
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-10-03 19:43:08 -07:00
cris-artpec3-cpufreq.c
cpufreq: create another field .flags in cpufreq_frequency_table
2014-04-07 14:43:50 +02:00
cris-etraxfs-cpufreq.c
cpufreq: create another field .flags in cpufreq_frequency_table
2014-04-07 14:43:50 +02:00
davinci-cpufreq.c
cpufreq: davinci: Reuse cpufreq_generic_frequency_table_verify()
2016-06-09 00:58:07 +02:00
dbx500-cpufreq.c
cpufreq: drop owner assignment from platform_drivers
2014-10-20 16:20:24 +02:00
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
PM / OPP: Prefix exported opp routines with dev_pm_opp_
2015-09-15 02:03:16 +02:00
freq_table.c
cpufreq: Handle sorted frequency tables more efficiently
2016-07-07 00:13:20 +02:00
gx-suspmod.c
cpufreq: gx-suspmod: Fix two typos in two comments
2015-06-15 15:46:15 +02:00
highbank-cpufreq.c
Merge branch 'mailbox-for-linus' of git://git.linaro.org/landing-teams/working/fujitsu/integration
2014-10-21 11:21:19 -07:00
ia64-acpi-cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
imx6q-cpufreq.c
Merge branch 'pm-opp'
2015-11-02 00:54:37 +01:00
intel_pstate.c
cpufreq: intel_pstate: Use CPU load based algorithm for PM_MOBILE
2016-11-14 21:25:23 +01:00
Kconfig
Merge branch 'pm-cpufreq-sched' into pm-cpufreq
2016-10-02 01:42:33 +02:00
Kconfig.arm
cpufreq: brcmstb-avs-cpufreq: add debugfs support
2016-11-01 06:07:38 +01:00
Kconfig.powerpc
cpufreq: qoriq: rename the driver
2015-03-18 22:35:16 +01:00
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
Merge tag 'pm-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2016-05-16 19:17:22 -07:00
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
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
cpufreq: brcmstb-avs-cpufreq: AVS CPUfreq driver for Broadcom STB SoCs
2016-11-01 06:07:37 +01:00
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
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
pasemi-cpufreq.c
cpufreq: Use cpufreq_for_each_* macros for frequency table iteration
2014-04-30 00:06:21 +02:00
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
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
powernow-k7.h
[CPUFREQ] Move x86 drivers to drivers/cpufreq/
2011-05-19 18:51:07 -04:00
powernow-k8.c
ACPI / processor: Drop an unused argument of a cleanup routine
2015-07-22 22:11:16 +02:00
powernow-k8.h
cpufreq: powernow-k8: Suppress checkpatch warnings
2014-05-17 01:27:01 +02:00
powernv-cpufreq.c
cpufreq: powernv: Disable preemption while checking CPU throttling state
2016-11-16 23:29:59 +01:00
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: Remove cpufreq_frequency_get_table()
2016-06-09 00:58:05 +02:00
ppc_cbe_cpufreq.c
cpufreq: Use cpufreq_for_each_* macros for frequency table iteration
2014-04-30 00:06:21 +02:00
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
cpufreq: Remove cpufreq_generic_exit()
2014-03-12 01:06:00 +01:00
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: Return index from cpufreq_frequency_table_target()
2016-06-09 00:58:06 +02:00
s3c64xx-cpufreq.c
cpufreq: Use cpufreq_for_each_* macros for frequency table iteration
2014-04-30 00:06:21 +02:00
s3c2410-cpufreq.c
cpufreq: s3c24xx: Remove some dead code
2014-07-19 04:24:59 +09:00
s3c2412-cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
s3c2416-cpufreq.c
cpufreq: s3c: remove incorrect __init annotations
2015-02-19 06:36:53 +01:00
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
cpufreq: Mark ARM drivers with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag
2014-01-06 14:17:25 +01:00
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
cpufreq: sfi: use kmemdup rather than duplicating its implementation
2015-09-01 15:51:15 +02:00
sh-cpufreq.c
cpufreq: Convert existing drivers to use cpufreq_freq_transition_{begin|end}
2014-03-26 16:41:41 +01:00
sparc-us2e-cpufreq.c
cpufreq: add 'freq_table' in struct cpufreq_policy
2014-03-12 01:06:00 +01:00
sparc-us3-cpufreq.c
cpufreq: add 'freq_table' in struct cpufreq_policy
2014-03-12 01:06:00 +01:00
spear-cpufreq.c
cpufreq: drop owner assignment from platform_drivers
2014-10-20 16:20:24 +02:00
speedstep-centrino.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
speedstep-ich.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
speedstep-lib.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
speedstep-lib.h
[CPUFREQ] Move x86 drivers to drivers/cpufreq/
2011-05-19 18:51:07 -04:00
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
cpufreq: tegra20: remove superfluous CONFIG_PM ifdefs
2015-09-26 03:00:57 +02:00
tegra124-cpufreq.c
cpufreq: tegra124: No need of setting platform-data
2016-04-09 01:12:09 +02:00
unicore2-cpufreq.c
cpufreq: unicore32: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO
2014-04-21 23:42:27 +02:00
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