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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-01-26 17:56:17 +0100
committerIngo Molnar <mingo@elte.hu>2009-02-01 10:49:06 +0100
commitd942fb6c7d391baba3dddb566eb735fbf3df8528 (patch)
tree0340b810c79f873b7aea34298aa22e2ebf740df3 /kernel/posix-timers.c
parentf90d4118bacef87894621a3e8aba853fa0c89abc (diff)
sched: fix sync wakeups
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>
Diffstat (limited to 'kernel/posix-timers.c')
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