linux-kernel - Re: [RFC] [PATCH] perf: Attaching an event to a specific PMU

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Date:	Thu, 7 Jul 2011 11:39:26 +0200
From:	Robert Richter <robert.richter@....com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
CC:	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC] [PATCH] perf: Attaching an event to a specific PMU

One more note:

> On 06.07.11 13:12:48, Peter Zijlstra wrote:

> > perf stat -e IBS:fetches will always have a fail against rmmod, rmmod
> > could complete before we try to open the file (assuming IBS is a
> > module).

If the module is busy, it wont be unloaded.

-Robert

-- 
Advanced Micro Devices, Inc.
Operating System Research Center

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