From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Fri, 21 May 2010 10:31:09 +0000 (+0200)
Subject: perf_events, trace: Fix probe unregister race
X-Git-Tag: v2.6.35-rc2~47^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3771f0771154675d4a0ca780be2411f3cc357208;p=pandora-kernel.git

perf_events, trace: Fix probe unregister race

tracepoint_probe_unregister() does not synchronize against the probe
callbacks, so do that explicitly. This properly serializes the callbacks
and the free of the data used therein.

Also, use this_cpu_ptr() where possible.

Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1274438476.1674.1702.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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