From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Mon, 26 Jan 2009 16:56:17 +0000 (+0100)
Subject: sched: fix sync wakeups
X-Git-Tag: v2.6.29-rc4~68^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d942fb6c7d391baba3dddb566eb735fbf3df8528;p=pandora-kernel.git

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>
---

Reading git-diff-tree failed