linux-kernel - Re: [PATCH 4/4] perf script: Add script to collect and display IBS samples

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Date:	Thu, 2 Feb 2012 12:21:33 +0100
From:	Robert Richter <robert.richter@....com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Peter Zijlstra <peterz@...radead.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Stephane Eranian <eranian@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/4] perf script: Add script to collect and display IBS
 samples

Ingo,

On 30.12.11 10:55:21, Ingo Molnar wrote:
> 
> * Robert Richter <robert.richter@....com> wrote:
> 
> > > Once something like 'perf report' works for some useful 
> > > looking sub-case you can also tack on all the extra IBS 
> > > goodies that specialized tools might need as well, i have no 
> > > problem with providing that.
> > 
> > Isn't that outlook I gave about pebs like implementation of 
> > the precise bit with IBS "useful enough"? This would be on top 
> > patches anyway, so no need to hold back current patches.
> 
> An 'outlook' is not something I can test before sending commits 
> to Linus.

The question was more if this is the direction you think may make
sense to go to. Of course, I would then implement and send patches for
this.

> To help your effort we could tentatively put the patches into a 
> separate tip:perf/ibs topic branch if everyone agrees otherwise, 
> which can go upstream once it's complete and usable.

This would be very helpful for me. So far I see following patches for
this on top of today's tip/perf/core (623ec99):

08e232d perf, x86: Implement IBS event configuration
05efba4 perf, x86: Implement IBS interrupt handler
b0532b2 perf, x86: Implement IBS pmu control ops
56ccf1a perf, x86: Implement 64 bit counter support for IBS
98e655c perf tool: Parse general/raw events from sysfs
aac22da perf tools: Add pmu mappings to header information
f1f062d perf script: Add script to collect and display IBS samples

Only 'perf tools: Add pmu mappings to header information' applies with
conflicts, so I could resend an updated version. This patch is also
independent from the other patches and can be applied separately.

If you wish I also can send all patches again, but they would be
unchanged anyway (except that one with the conflict).

Peter and Arnaldo,

please agree with a separate tip:perf/ibs development branch. It would
be easier to all of us because we don't have the effort of reviewing
patches again that will not change anymore.

Thanks,

-Robert

-- 
Advanced Micro Devices, Inc.
Operating System Research Center

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