linux-kernel - Re: [PATCH 1/2] perf_counter: tools: Make :u and :k exclude hypervisor

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Date:	Tue, 30 Jun 2009 13:57:32 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Paul Mackerras <paulus@...ba.org>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] perf_counter: tools: Make :u and :k exclude
	hypervisor


* Paul Mackerras <paulus@...ba.org> wrote:

> Ingo Molnar writes:
> 
> > Hm, mind fixing the full range of problems with these flags 
> > please?
> 
> Sure, looking at it now.
> 
> One thing I'd like to do is add complete lists of hardware events 
> for each processor so that perf can tell you the full set of 
> things you can measure, and can let you ask for them without 
> having to know raw event codes. [...]

Excellent.

> [...] I know how to work out which processor we're running on for 
> powerpc; for x86 I assume cpuid or something similar is usable 
> from userspace, is it?

Yeah. /proc/cpuinfo can be read as well.

	Ingo
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