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Date: Tue, 18 Apr 2017 12:32:13 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: jbaron@akamai.com, rostedt@goodmis.org, tglx@linutronix.de,
        mingo@kernel.org, bigeasy@linutronix.de, peterz@infradead.org
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 0/3] more cpu hotplug fail
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Now that the CPU hotplug lock is a regular per-cpu rwsem it can no longer nest
read-sides.

Fix two such sites in perf.