sched/fair: Trigger the update of blocked load on newly idle cpu

Browse source

Instead of waking up a random and already idle CPU, we can take advantage
of this_cpu being about to enter idle to run the ILB and update the
blocked load.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Link: https://lkml.kernel.org/r/20210224133007.28644-7-vincent.guittot@linaro.org

...

This commit is contained in:

Vincent Guittot 2021-02-24 14:30:06 +01:00 • committed by Ingo Molnar

parent 6553fc1817

commit c6f886546c

4 changed files with 35 additions and 4 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

kernel/sched/core.c

View file

24

kernel/sched/fair.c

View file

6

kernel/sched/idle.c

View file

7

kernel/sched/sched.h

View file