From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Thu, 16 Sep 2010 17:17:24 +0000 (+0200)
Subject: perf: Avoid RCU vs preemption assumptions
X-Git-Tag: v2.6.37-rc1~214^2~36
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=41945f6ccf1e86f87fddf6b32db9cf431c05fb54;p=pandora-kernel.git

perf: Avoid RCU vs preemption assumptions

The per-pmu per-cpu context patch converted things from
get_cpu_var() to this_cpu_ptr(), but that only works if
rcu_read_lock() actually disables preemption, and since
there is no such guarantee, we need to fix that.

Use the newly introduced {get,put}_cpu_ptr().

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Tejun Heo <tj@kernel.org>
LKML-Reference: <20100917093009.308453028@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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