From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 19 Dec 2008 09:20:42 +0000 (+0100)
Subject: perfcounters: pull inherited counters
X-Git-Tag: v2.6.31-rc1~383^2~545
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eef6cbf5844c620d9db9be99e4908cdf92492fb9;p=pandora-kernel.git

perfcounters: pull inherited counters

Change counter inheritance from a 'push' to a 'pull' model: instead of
child tasks pushing their final counts to the parent, reuse the wait4
infrastructure to pull counters as child tasks are exit-processed,
much like how cutime/cstime is collected.

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