linux-kernel - Re: re-enable Nehalem raw Offcore-Events support

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Message-ID: <20110429152736.GA6517@tassilo.jf.intel.com>
Date:	Fri, 29 Apr 2011 08:27:36 -0700
From:	Andi Kleen <ak@...ux.intel.com>
To:	Vince Weaver <vweaver1@...s.utk.edu>
Cc:	torvalds@...ux-foundation.org, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...il.com>
Subject: Re: re-enable Nehalem raw Offcore-Events support

On Fri, Apr 29, 2011 at 11:04:46AM -0400, Vince Weaver wrote:
> Hello Linus
> 
> can you revert the commit b52c55c6a25e4515b5e075a989ff346fc251ed09

Acked-by: Andi Kleen <ak@...ux.intel.com>

(I wrote the original patch)

> (finally!) added in the 2.6.39 merge window.  However this is a useful 
> feature and many tools (including the PAPI performance counter library 
> that I work on) had added support for it in anticipation of the 2.6.39 

I also use some tools which benefit from this functionality. The
extended raw events are very useful to analyze NUMA problems for once.

-Andi
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