From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Tue, 15 Sep 2009 17:38:52 +0000 (+0200)
Subject: sched: Add a few SYNC hint knobs to play with
X-Git-Tag: v2.6.32-rc1~652^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e69b0f1b41c0e57bb1e29100b5810a5914efcb45;p=pandora-kernel.git

sched: Add a few SYNC hint knobs to play with

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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