From: Yan, Zheng <zheng.z.yan@intel.com>
Date: Fri, 15 Jun 2012 06:31:31 +0000 (+0800)
Subject: perf: Avoid race between cpu hotplug and installing event
X-Git-Tag: v3.6-rc1~167^2~36
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fbfc623f8231c8d8c78aab5841e9c6e5811ab638;p=pandora-kernel.git

perf: Avoid race between cpu hotplug and installing event

perf_event_open() requires the cpu on which to install event is online,
but the cpu can go offline after perf_event_open checks that. Add a
get_online_cpus()/put_online_cpus() pair to avoid the race.

Signed-off-by: Zheng Yan <zheng.z.yan@intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1339741902-8449-3-git-send-email-zheng.z.yan@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

Reading git-diff-tree failed