linux-kernel - Re: [PATCH 2/2] perf, amd: support for AMD NB and L2I "uncore" counters.

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Message-ID: <20130419144100.GA2894@jshin-Toonie>
Date:	Fri, 19 Apr 2013 09:41:00 -0500
From:	Jacob Shin <jacob.shin@....com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
CC:	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>, <x86@...nel.org>,
	Stephane Eranian <eranian@...gle.com>,
	Jiri Olsa <jolsa@...hat.com>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] perf, amd: support for AMD NB and L2I "uncore"
 counters.

On Fri, Apr 19, 2013 at 02:27:16PM +0200, Peter Zijlstra wrote:
> On Thu, 2013-04-18 at 11:33 -0500, Jacob Shin wrote:
> 
> > Okay, here is V2 which does that. Thanks again in advance for taking
> > the time to look it over.
> 
> Awesome, looks good on a first read.. I'm assuming you've tested things
> and they actually work too? :-)

Yes of course, tested on:
1. Older families without these new counters to make sure there is no
   regression.
2. Family 15h, only has NB counters
3. Family 16h, has both NB and L2 counters

> 
> > From d68225744196d8b0d60a1bc33ae9abdbffbd9bc9 Mon Sep 17 00:00:00 2001
> > From: Jacob Shin <jacob.shin@....com>
> > Date: Sun, 14 Apr 2013 04:12:42 -0500
> > Subject: [PATCH 2/2] perf, amd: support for AMD NB and L2I "uncore" counters.
> > 
> > Add support for AMD Family 15h [and above] northbridge performance
> > counters. MSRs 0xc0010240 ~ 0xc0010247 are shared across all cores
> > that share a common northbridge.
> > 
> > Add support for AMD Family 16h L2 performance counters. MSRs
> > 0xc0010230 ~ 0xc0010237 are shared across all cores that share a
> > common L2 cache.
> > 
> > We do not enable counter overflow interrupts. Sampling mode and
> > per-thread events are not supported.
> > 
> > Signed-off-by: Jacob Shin <jacob.shin@....com>
> 
> Acked-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>

Thank you again, for taking the time.

Ingo, I hope it's not too late to make it into perf/core for 3.10.

Thanks,

-Jacob

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