linux-kernel - Re: [PATCH 02/10] perf/x86: Improve HT workaround GP counter constraint

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Message-ID: <20150522132534.GD3644@twins.programming.kicks-ass.net>
Date:	Fri, 22 May 2015 15:25:34 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Vince Weaver <vincent.weaver@...ne.edu>,
	Jiri Olsa <jolsa@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 02/10] perf/x86: Improve HT workaround GP counter
 constraint

On Fri, May 22, 2015 at 06:07:00AM -0700, Stephane Eranian wrote:
> 
> One other thing I noticed is that the --n_excl needs to be protected by the
> excl_cntrs->lock in put_excl_constraints().

Nah, its strictly per cpu.
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