linux-kernel - Re: [PATCH 0/8] perf: add ability to sample physical data addresses

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Message-ID: <CABPqkBQUKceC3dFTDZf5L=vifWQrdNPie9wxh4axGLXA9wXoHQ@mail.gmail.com>
Date:	Tue, 30 Jul 2013 16:53:17 +0200
From:	Stephane Eranian <eranian@...gle.com>
To:	David Ahern <dsahern@...il.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung.kim@....com>
Subject: Re: [PATCH 0/8] perf: add ability to sample physical data addresses

On Tue, Jul 30, 2013 at 4:50 PM, David Ahern <dsahern@...il.com> wrote:
> On 7/30/13 8:21 AM, Stephane Eranian wrote:
>>
>> One thing that bothers me with the MMAP2 approach is that
>> it forces integration into perf. Now, you will need to analyze
>> the MMAP2 records. With my sample_type approach, you
>> simply needed a cmdline option on perf record, and then
>> you could dump the sample using perf report -D and feed
>
>
> what do you want that is not coming out via perf-script?
>
mmap records. Are they passed to scripts?

>
>> them into a post-processing script. But now, the analysis
>> needs to be integrated into perf or the tool needs to parse
>> the full perf.data file.
>
>
> you mean parsed during perf-record?
>
No, I mean for a standalone tool on top of perf record.
With my approach, you can simply write a wrapper script
around perf report and do the analysis.
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