From: Ingo Molnar <mingo@elte.hu>
To: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] perf_counter: tools: Make :u and :k exclude hypervisor
Date: Tue, 30 Jun 2009 13:57:32 +0200 [thread overview]
Message-ID: <20090630115732.GA7611@elte.hu> (raw)
In-Reply-To: <19017.63611.674927.683004@cargo.ozlabs.ibm.com>
* Paul Mackerras <paulus@samba.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
prev parent reply other threads:[~2009-06-30 11:57 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-29 11:08 [PATCH 1/2] perf_counter: tools: Make :u and :k exclude hypervisor Paul Mackerras
2009-06-29 11:13 ` [PATCH 2/2] perf_counter: tools: Reduce perf stat overhead Paul Mackerras
2009-06-29 20:51 ` [tip:perfcounters/urgent] perf_counter tools: Reduce perf stat measurement overhead/skew tip-bot for Paul Mackerras
2009-06-29 20:34 ` [PATCH 1/2] perf_counter: tools: Make :u and :k exclude hypervisor Ingo Molnar
2009-06-30 11:35 ` Paul Mackerras
2009-06-30 11:57 ` Ingo Molnar [this message]
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