linux-kernel - Re: [PATCH] perf: mmap_page capabilities and docs

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Message-ID: <20120323084712.GE2886@gmail.com>
Date:	Fri, 23 Mar 2012 09:47:12 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Stephane Eranian <eranian@...gle.com>,
	Vince Weaver <vince@...ter.net>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Jiri Olsa <jolsa@...hat.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf: mmap_page capabilities and docs


* Peter Zijlstra <peterz@...radead.org> wrote:

> Usage:
> 
>   gcc -finstrument-functions -o my_prog main.c
>   LD_PRELOAD=profviz.so ./my_prog
> 
>   xdot prof.dot
> or
>   dot -Tsvg prof.svg prof.dot
> 
> The attached prof.svg it example output of:
> 
>   LD_PRELOAD=./profviz.so ./perf report

Nifty. Could we integrate this into 'perf profviz <myprog>' or 
so [feel free to use a better sub-tool name - 'perf selfprof' ?] 
and thus make it available to mere mortals as well?

'perf selfprof' could also warn about apps that were not built 
with -finstrument-functions.

Thanks,

	Ingo
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