linux-kernel - Re: [PATCH RFC V3 3/5] perf,tool: partial time support

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Message-ID: <20150717071204.GA25386@sejong>
Date:	Fri, 17 Jul 2015 16:12:04 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	"Liang, Kan" <kan.liang@...el.com>
Cc:	"acme@...nel.org" <acme@...nel.org>,
	"jolsa@...nel.org" <jolsa@...nel.org>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Hunter, Adrian" <adrian.hunter@...el.com>
Subject: Re: [PATCH RFC V3 3/5] perf,tool: partial time support

Hi,

On Wed, Jul 15, 2015 at 07:03:38PM +0000, Liang, Kan wrote:
> > However, perf_evlist__id_hdr_size() seems to be affected also.  Are you
> > sure it's okay too?
> > 
> Yes.
> id_hdr_size is calculated according to the first event. It impacts 
> perf tool generated COMM, MMAP and FORK events.
> But all of these events have same and position fixed IDENTIFIER, 0.
> When parsing the events by perf_evlist__event2evsel, id 0 always
> return first event.
> So only first event will be involved to parse perf tool generated
> COMM, MMAP and FORK events. TIME setting from other events
> doesn’t impact.

Good.  Thanks for the explanation..

Thanks,
Namhyung
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