From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Sat, 23 May 2009 16:28:57 +0000 (+0200)
Subject: perf_counter: Sanitize context locking
X-Git-Tag: v2.6.31-rc1~383^2~242
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=682076ae1de0aba9c2da509f7b19dc03e30a6e1f;p=pandora-kernel.git

perf_counter: Sanitize context locking

Ensure we're consistent with the context locks.

 context->mutex
   context->lock
     list_{add,del}_counter();

so that either lock is sufficient to stabilize the context.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <20090523163012.618790733@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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