sched/fair: Implement more accurate async detach

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The problem with the overestimate is that it will subtract too big a
value from the load_sum, thereby pushing it down further than it ought
to go. Since runnable_load_avg is not subject to a similar 'force',
this results in the occasional 'runnable_load > load' situation.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Peter Zijlstra 2017-05-12 14:18:10 +02:00 • committed by Ingo Molnar

parent f207934fb7

commit 9a2dd585b2

1 changed files with 3 additions and 6 deletions

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kernel/sched/fair.c

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