Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-04 01:51:34 +00:00
Code Issues Packages Projects Releases Wiki Activity
d719e8f268
linux/kernel/sched
History
Thomas Gleixner d60585c576 sched/core: Correct off by one bug in load migration calculation 
The move of calc_load_migrate() from CPU_DEAD to CPU_DYING did not take into
account that the function is now called from a thread running on the outgoing
CPU. As a result a cpu unplug leakes a load of 1 into the global load
accounting mechanism.

Fix it by adjusting for the currently running thread which calls
calc_load_migrate().

Reported-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Cc: rt@linutronix.de
Cc: shreyas@linux.vnet.ibm.com
Fixes: e9cd8fa4fc: ("sched/migration: Move calc_load_migrate() into CPU_DYING")
Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1607121744350.4083@nanos
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-13 14:58:20 +02:00
..
auto_group.c
auto_group.h
clock.c
completion.c
core.c sched/core: Correct off by one bug in load migration calculation 2016-07-13 14:58:20 +02:00
cpuacct.c
cpuacct.h
cpudeadline.c sched/core: Use tsk_cpus_allowed() instead of accessing ->cpus_allowed 2016-05-12 09:55:35 +02:00
cpudeadline.h
cpufreq_schedutil.c cpufreq: schedutil: Improve prints messages with pr_fmt 2016-05-19 01:02:52 +02:00
cpufreq.c
cpupri.c sched/core: Use tsk_cpus_allowed() instead of accessing ->cpus_allowed 2016-05-12 09:55:35 +02:00
cpupri.h
cputime.c
deadline.c sched/core: Provide a tsk_nr_cpus_allowed() helper 2016-05-12 09:55:36 +02:00
debug.c sched/debug: Fix /proc/sched_debug regression 2016-06-08 14:31:58 +02:00
fair.c sched/fair: Fix calc_cfs_shares() fixed point arithmetics width confusion 2016-06-27 11:18:37 +02:00
features.h
idle_task.c locking/lockdep, sched/core: Implement a better lock pinning scheme 2016-05-05 09:23:59 +02:00
idle.c cpuidle: Do not access cpuidle_devices when !CONFIG_CPU_IDLE 2016-06-02 23:05:27 +02:00
loadavg.c sched/core: Correct off by one bug in load migration calculation 2016-07-13 14:58:20 +02:00
Makefile
rt.c sched/core: Provide a tsk_nr_cpus_allowed() helper 2016-05-12 09:55:36 +02:00
sched.h sched/core: Correct off by one bug in load migration calculation 2016-07-13 14:58:20 +02:00
stats.c
stats.h sched/debug: Fix /proc/sched_debug regression 2016-06-08 14:31:58 +02:00
stop_task.c locking/lockdep, sched/core: Implement a better lock pinning scheme 2016-05-05 09:23:59 +02:00
swait.c
wait.c