Re: [PATCH] perf_events: fix remapped count support

From: Peter Zijlstra
Date: Tue Mar 23 2010 - 13:41:46 EST


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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