From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 15 Oct 2007 15:00:18 +0000 (+0200)
Subject: sched: speed up context-switches a bit
X-Git-Tag: v2.6.24-rc1~1289^2~19
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e5f32a3856caabe745381279f7f32e3b581b59dc;p=pandora-kernel.git

sched: speed up context-switches a bit

speed up context-switches a bit by not clearing p->exec_start.

(as a side-effect, this also makes p->exec_start a universal timestamp
available to cache-hot estimations.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
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