linux-kernel - Re: [PATCH v2] perf/x86-ibs: Precise event sampling with IBS for AMD CPUs

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Message-ID: <1336154008.6509.48.camel@twins>
Date:	Fri, 04 May 2012 19:53:28 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Robert Richter <robert.richter@....com>
Cc:	Ingo Molnar <mingo@...e.hu>, Stephane Eranian <eranian@...gle.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] perf/x86-ibs: Precise event sampling with IBS for
 AMD CPUs

On Wed, 2012-05-02 at 13:14 +0200, Peter Zijlstra wrote:
> On Wed, 2012-05-02 at 12:33 +0200, Robert Richter wrote:
> > Updated version. Level 1 and 2 are handled the same way now. Don't
> > drop samples in precise level 2 if rip is invalid, instead support the
> > PERF_EFLAGS_EXACT flag.
> > 
> > No changes in other patches of
> > 
> >  [PATCH 00/12] perf/x86-ibs: Precise event sampling with IBS for AMD CPUs
> 
> Thanks!, I managed to stomp all patches on top of -tip and shall be
> trying it out on my aging opteron-1216.

Hmm, that box isn't reporting X86_FEATURE_IBS, a quick trip to Wikipedia
tells me this is a K8 (Santa Ana), not Fam 10h. Means I don't actually
have any hardware to test this on :-(

I'll have to throw it to Ingo then, IIRC he's got an Istanbul part.
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