linux-kernel - Re: [PATCH 1/9] perf tools: Add nameid value into evsel object

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Message-ID: <20150602195933.GS624@kernel.org>
Date:	Tue, 2 Jun 2015 16:59:33 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Jiri Olsa <jolsa@...nel.org>, lkml <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	David Ahern <dsahern@...il.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Andi Kleen <ak@...ux.intel.com>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 1/9] perf tools: Add nameid value into evsel object

Em Tue, Jun 02, 2015 at 08:46:36PM +0200, Jiri Olsa escreveu:
> On Tue, Jun 02, 2015 at 03:10:56PM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Tue, Jun 02, 2015 at 12:59:55AM +0200, Jiri Olsa escreveu:
> > > Adding a way to tag an evsel object with ID value based
> > > on its name. It will be used for transaction events,
> > > but could be useful for others.
> > 
> > For what? Can you ellaborate? Just by looking at this commit message I
> > can't figure out the value of this patch :-\
> > 
> > - Arnaldo
> >  
> > > This way we can identify transactions events and get rid
> > > of the current position based way we use.
> 
> well, right here ^^^
> 
> to get rid of getting ID of transaction events based on their
> possition in evlist

Well, as we discussed this may be implemented using evsel->priv/struct
perf_stat, i.e. this seems something 'perf stat' specific, so no rush in
moving this to the infrastructure available for all tools.

- Arnaldo
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