linux-kernel - Re: [PATCH 5/5 v2] perf timechart: add emphasize option

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Message-ID: <20131217134137.GA29396@gmail.com>
Date:	Tue, 17 Dec 2013 14:41:37 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	Stanislav Fomichev <stfomichev@...dex-team.ru>,
	linux-kernel@...r.kernel.org, a.p.zijlstra@...llo.nl,
	paulus@...ba.org, mingo@...hat.com, namhyung@...nel.org,
	artagnon@...il.com, jolsa@...hat.com
Subject: Re: [PATCH 5/5 v2] perf timechart: add emphasize option


* Arnaldo Carvalho de Melo <acme@...stprotocols.net> wrote:

> Em Tue, Dec 17, 2013 at 04:15:22PM +0400, Stanislav Fomichev escreveu:
> > > Please give a sample usage command line and a sample output. (the 
> > > highlighting can be done using ASCII escape sequences in the changelog 
> > > as well.)
> > Highlighting is done in the generated SVG, so I can't really show it in
> > the log or documentation. But I added simple example with -e option.
> > 
> > >   -e::
> > >   --emphasize=<duration_nsecs|task_name>::
> > Thanks, added.
> 
> I also wonder how to allocate single letter options here... can we live
> with just --emphasize for now? Wouldn't at some point we maybe want to
> use -e in 'perf timechart' to pick some specific event, and then, to
> make it consistent with the other tools, -e would then be used?

I wanted to raise a similar argument too - so if we don't have to do 
-e then maybe '--grep' would be the better option name?

If it becomes popular then the pattern matching can be improved, 
without having to change the option name and such.

Thanks,

	Ingo
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