sched: fix sync wakeups

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Pawel Dziekonski reported that the openssl benchmark and his
quantum chemistry application both show slowdowns due to the
scheduler under-parallelizing execution.

The reason are pipe wakeups still doing 'sync' wakeups which
overrides the normal buddy wakeup logic - even if waker and
wakee are loosely coupled.

Fix an inversion of logic in the buddy wakeup code.

Reported-by: Pawel Dziekonski <dzieko@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Peter Zijlstra 2009-01-26 17:56:17 +01:00 • committed by Ingo Molnar

parent f90d4118ba

commit d942fb6c7d

2 changed files with 6 additions and 9 deletions

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4

kernel/sched.c

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11

kernel/sched_fair.c

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