sched: Add a few SYNC hint knobs to play with

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Currently we use overlap to weaken the SYNC hint, but allow it to
set the hint as well.

 echo NO_SYNC_WAKEUP > /debug/sched_features
 echo SYNC_MORE > /debug/sched_features

preserves pipe-test behaviour without using the WF_SYNC hint.

Worth playing with on more workloads...

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

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Peter Zijlstra 2009-09-15 19:38:52 +02:00 • committed by Ingo Molnar

parent 63859d4fe4

commit e69b0f1b41

2 changed files with 21 additions and 3 deletions

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14

kernel/sched_fair.c

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10

kernel/sched_features.h

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