linux-kernel - Re: [GIT PULL 00/37] perf/core improvements and fixes

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Date:	Fri, 5 Jun 2015 11:08:47 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Adrian Hunter <adrian.hunter@...el.com>
Cc:	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
	Borislav Petkov <bp@...e.de>, David Ahern <dsahern@...il.com>,
	Don Zickus <dzickus@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>, Josef Bacik <jbacik@...com>,
	kernel-team@...com, Luigi Semenzato <semenzato@...omium.org>,
	Martin Liska <mliska@...e.cz>,
	Namhyung Kim <namhyung@...nel.org>,
	"Nam T . Nguyen" <namnguyen@...omium.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Simon Que <sque@...omium.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [GIT PULL 00/37] perf/core improvements and fixes

Em Fri, Jun 05, 2015 at 04:21:44PM +0300, Adrian Hunter escreveu:
> On 27/05/15 15:35, Arnaldo Carvalho de Melo wrote:
> > Em Wed, May 27, 2015 at 09:38:47AM +0200, Ingo Molnar escreveu:
> >> So this stuff is user and developer hostile at the moment. We can push this 
> >> towards Linus only if this becomes _much_ more user and developer friendly. Near 
> >> zero documentation and near zero comments in the code don't cut it really.

> > Adrian, can you try to address this further, please?

> > Something like a handholding session, so that we don't have to dig thru
> > all the csets or patch series cover letters, telling:
> > 
> > 1. What hardware one has to have to be able to test it
> > 
> > 2. First command to use
> > 
> > 3. What will be generated, how much space (a lot?) it will use on the
> >    perf.data file, etc.
> > 
> > 5. What commands have to be used on this perf.data file and what to
> >    expect from it.
> > 
> > I.e. a HOWTO that starts with a as short as possible description on how
> >  to use it for the very first time, for people never exposed to Intel PT
> > but that can benefit from using it.
> 
> I sent the patches again a week ago, but perhaps no one noticed.  They are here:
> 
> 	http://marc.info/?l=linux-kernel&m=143290658028132
> 
> Comments welcome :-)

I saw it, was just busy with other stuff and was waiting for other
people to chime in, will look for that 'handholding session' and also
for a broadwell machine were I can try to follow it.

- Arnaldo
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