linux-kernel - Re: [PATCH 02/23] perf tools: Remove data

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Message-ID: <87li54wcng.fsf@sejong.aot.lge.com>
Date:	Thu, 18 Jul 2013 16:27:47 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	linux-kernel@...r.kernel.org,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Andi Kleen <ak@...ux.intel.com>,
	David Ahern <dsahern@...il.com>
Subject: Re: [PATCH 02/23] perf tools: Remove data_offset seek as it's not needed

On Wed, 17 Jul 2013 19:49:42 +0200, Jiri Olsa wrote:
> Removing data_offset seek as it's not needed, because
> data are not read by syscall but mmaped instead.

Yes we do, but it's not mandatory, right?  I'd rather expect the file
offset remains at the beginning of data after calling
perf_session__read_header() instead of a random point (EOF?).

Thanks,
Namhyung
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