linux-kernel - Re: [PATCH -tip] perf_counter/x86: Add a quirk for Atom processors

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Message-ID: <20090612132610.GA8634@ywang-moblin2.bj.intel.com>
Date:	Fri, 12 Jun 2009 21:26:10 +0800
From:	Yong Wang <yong.y.wang@...ux.intel.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Mike Galbraith <efault@....de>,
	Arjan van de Ven <arjan@...radead.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH -tip] perf_counter/x86: Add a quirk for Atom processors

On Fri, Jun 12, 2009 at 01:49:48PM +0200, Ingo Molnar wrote:
> 
> * Yong Wang <yong.y.wang@...ux.intel.com> wrote:
> 
> > The fixed-function performance counters do not work on current 
> > Atom processors. Use the general-purpose ones instead.
> 
> ah, nice - applied to tip:perfcounters/core, thanks!
> 
> Does this make your Atom testbox work fine now?
> 

Yup, I tested the patch before I submitted it. It works fine now;-)
I will also keep an eye on future Atom processors to see whether fixed
function PMCs work or not.

Thanks
-Yong
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