linux-kernel - Re: [PATCH -tip v3 3/6] perf branch trace: print pid and command

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Date:	Wed, 6 Apr 2011 11:09:58 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	David Ahern <dsahern@...il.com>,
	Akihiro Nagai <akihiro.nagai.hw@...achi.com>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	2nddept-manager@....hitachi.co.jp,
	Paul Mackerras <paulus@...ba.org>, Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH -tip v3 3/6] perf branch trace: print pid and command

Em Wed, Apr 06, 2011 at 02:15:07PM +0200, Frederic Weisbecker escreveu:
> On Fri, Apr 01, 2011 at 11:11:10AM -0600, David Ahern wrote:
> > On 04/01/11 09:13, Frederic Weisbecker wrote:
> > > But well, we can start simple and make and just do the => trick
> > > if we have PERF_SAMPLE_ADDR and resolve addr if the user asked
> > > the sym. Then when we have the graph output, have these per evsel
> > > display callbacks.

> > There is another email thread about page faults. The user wants sample
> > address resolved to symbols. I was going to look into it next week when
> > I get back from vacation.
 
> What we seem to need for that is to bring a pagefault tracepoint. We had
> propositions for that in the past, but work on this is in pause mode it
> seems.

Isn't there one in the 'tip/tmp.perf/trace' tmp branch? Lemme see...

Yeah, and it is even yours ;-)

commit 6a824e89c0dfe6bce3d7e85f987ec9c8e7304b34
Author: Frederic Weisbecker <fweisbec@...il.com>
Date:   Fri Nov 12 05:35:06 2010 +0100

    perf, mm: Add fault tracing
    
    Part of that are two modified patches from Jiri Olsa who added the
    fault tracepoints. I had to split them in two tracepoints so that we get
    the faults handling duration.
    
    Originally-from: Frederic Weisbecker <fweisbec@...il.com>
    Signed-off-by: Ingo Molnar <mingo@...e.hu>
    Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

Can we dust this one off and get the ball rolling again? 

- Arnaldo
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