linux-kernel - Re: [PATCH] perf_events: fix remapped count support

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Message-ID: <1269366087.5109.143.camel@twins>
Date:	Tue, 23 Mar 2010 18:41:27 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	eranian@...gle.com
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, paulus@...ba.org,
	davem@...emloft.net, fweisbec@...il.com, robert.richter@....com,
	perfmon2-devel@...ts.sf.net, eranian@...il.com
Subject: Re: [PATCH] perf_events: fix remapped count support

On Tue, 2010-03-23 at 18:25 +0200, Stephane Eranian wrote:
>         This patch fixes the remapped counter support such that it now works
>         on X86 processors.

(could you please not add all this whitespace in front? and make sure
 it's no wider than 70 chars)

Also, I wouldn't say it fixes it, it's currently not broken, its plain
not implemented. So this patch adds support for rdpmc.

>         For other architectures, e.g., PPC, SPARC, assuming they do offer the ability
>         to read counts directly from user space, all that is needed is a couple of new
>         arch specific functions:

Power already supports this, so if you just broke this Paul is going to
be unhappy.
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