linux-kernel - Re: perf

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Message-ID: <1276507391.5601.2.camel@e102144-lin.cambridge.arm.com>
Date:	Mon, 14 Jun 2010 10:23:11 +0100
From:	Will Deacon <will.deacon@....com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	paulus <paulus@...ba.org>,
	stephane eranian <eranian@...glemail.com>,
	Robert Richter <robert.richter@....com>,
	Paul Mundt <lethal@...ux-sh.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: perf_disable()

Hi Peter,

On Fri, 2010-06-11 at 17:29 +0100, Peter Zijlstra wrote:
> Hi,
> 
> I've been going over perf_disable() usage in kernel/perf_event.c and
> wondered if we actually need it at all.

-------->8--------

> If nobody else known about/can find anything, I'm going to mostly remove
> perf_disable() for now and later think about how to optimize the
> hardware writes again.

No objections from the ARM camp as we don't use perf_disable() for
anything anyway.

Will


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