Vincent Guittot 457be908c8 sched/fair: Fix the update of blocked load when newly idle ...

With commit:

  31e77c93e4 ("sched/fair: Update blocked load when newly idle")

... we release the rq->lock when updating blocked load of idle CPUs.

This opens a time window during which another CPU can add a task to this
CPU's cfs_rq.

The check for newly added task of idle_balance() is not in the common path.
Move the out label to include this check.

Reported-by: Heiner Kallweit <hkallweit1@gmail.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 31e77c93e4 ("sched/fair: Update blocked load when newly idle")
Link: http://lkml.kernel.org/r/20180426103133.GA6953@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2018-05-03 07:38:03 +02:00

..

autogroup.c

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

autogroup.h

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

clock.c

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

completion.c

sched/completions: Use bool in try_wait_for_completion()

2018-03-09 08:00:18 +01:00

core.c

Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-04-15 12:43:30 -07:00

cpuacct.c

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

cpudeadline.c

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

cpudeadline.h

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

cpufreq_schedutil.c

Merge branch 'linus' into sched/urgent, to pick up fixes and updates

2018-04-05 09:20:34 +02:00

cpufreq.c

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

cpupri.c

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

cpupri.h

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

cputime.c

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

deadline.c

sched/core: Simplify helpers for rq clock update skip requests

2018-04-05 09:20:46 +02:00

debug.c

Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-04-02 11:49:41 -07:00

fair.c

sched/fair: Fix the update of blocked load when newly idle

2018-05-03 07:38:03 +02:00

features.h

sched/fair: Update util_est only on util_avg updates

2018-03-20 08:11:09 +01:00

idle.c

sched: idle: Select idle state before stopping the tick

2018-04-09 11:54:07 +02:00

isolation.c

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

loadavg.c

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

Makefile

sched/idle: Merge kernel/sched/idle.c and kernel/sched/idle_task.c

2018-03-04 12:39:33 +01:00

membarrier.c

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

rt.c

sched/core: Simplify helpers for rq clock update skip requests

2018-04-05 09:20:46 +02:00

sched-pelt.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

sched.h

sched/core: Simplify helpers for rq clock update skip requests

2018-04-05 09:20:46 +02:00

stats.c

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

stats.h

sched: Clean up and harmonize the coding style of the scheduler code base

2018-03-03 15:50:21 +01:00

stop_task.c

sched: Clean up and harmonize the coding style of the scheduler code base

2018-03-03 15:50:21 +01:00

swait.c

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

topology.c

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00

wait_bit.c

sched/wait: Improve __var_waitqueue() code generation

2018-03-20 08:23:25 +01:00

wait.c

sched/headers: Simplify and clean up header usage in the scheduler

2018-03-04 12:39:29 +01:00