linux/kernel/power
Qian Cai a534e924c5 PM: QoS: annotate data races in pm_qos_*_value()
The target_value field in struct pm_qos_constraints is used for
lockless access to the effective constraint value of a given QoS
list, so the readers of it cannot expect it to always reflect the
most recent effective constraint value.  However, they can and do
expect it to be equal to a valid effective constraint value computed
at a certain time in the past (event though it may not be the most
recent one), so add READ|WRITE_ONCE() annotations around the
target_value accesses to prevent the compiler from possibly causing
that expectation to be unmet by generating code in an exceptionally
convoluted way.

Signed-off-by: Qian Cai <cai@lca.pw>
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-03-03 23:34:51 +01:00
..
autosleep.c PM / wakeup: Show wakeup sources stats in sysfs 2019-08-21 00:20:40 +02:00
console.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
energy_model.c sched/topology: Remove unused 'sd' parameter from arch_scale_cpu_capacity() 2019-06-24 19:23:39 +02:00
hibernate.c PM: hibernate: Add more logging on hibernation failure 2020-01-07 13:31:12 +01:00
Kconfig PM: suspend: Add sysfs attribute to control the "sync on suspend" behavior 2020-01-16 21:47:03 +01:00
main.c PM: suspend: Add sysfs attribute to control the "sync on suspend" behavior 2020-01-16 21:47:03 +01:00
Makefile PM: Introduce an Energy Model management framework 2018-12-11 15:16:58 +01:00
power.h y2038: syscalls: change remaining timeval to __kernel_old_timeval 2019-11-15 14:38:29 +01:00
poweroff.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 248 2019-06-19 17:09:08 +02:00
process.c PM / sleep: Show freezing tasks that caused a suspend abort 2018-09-10 12:09:10 +02:00
qos.c PM: QoS: annotate data races in pm_qos_*_value() 2020-03-03 23:34:51 +01:00
snapshot.c Merge back new material related to system-wide PM for v5.6. 2020-01-23 16:00:56 +01:00
suspend.c PM: suspend: Add sysfs attribute to control the "sync on suspend" behavior 2020-01-16 21:47:03 +01:00
suspend_test.c PM: sleep: Switch to rtc_time64_to_tm()/rtc_tm_to_time64() 2019-12-20 09:58:08 +01:00
swap.c kernel: power: swap: use kzalloc() instead of kmalloc() followed by memset() 2019-06-28 10:20:39 +02:00
user.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
wakelock.c PM / wakeup: Show wakeup sources stats in sysfs 2019-08-21 00:20:40 +02:00