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

From: Ingo Molnar
Date: Tue Dec 17 2013 - 08:41:45 EST



* Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxxxx> 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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