linux-kernel - Re: [PATCH] perf, record: Ammend option summaries

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Message-ID: <20150611135851.GA2696@kernel.org>
Date:	Thu, 11 Jun 2015 10:58:51 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH] perf, record: Ammend option summaries

Em Thu, Jun 11, 2015 at 10:46:19AM +0200, Peter Zijlstra escreveu:
> On Wed, Jun 10, 2015 at 02:27:43PM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Wed, Jun 10, 2015 at 04:48:50PM +0200, Peter Zijlstra escreveu:
> > > Because there's too many options and I cannot read, I frequently get
> > > confused between -c and -P, and try to do things like:

> > >   perf record -P 50000 -- foo

> > > Which does not work; try and make the option description slightly longer
> > > and hopefully less confusing.

> > Thanks, I'll check and update tools/perf/Documentation/perf-record.txt,
> > i.e. the man page.

> Thanks, I always forget that stuff even exists. I further get totally
> annoyed every time I do: perf record --help and it vomits on me.

> Could we please make -h and --help do the exact same thing?

Well, right now it tries to read the man-page, that if not installed,
will bail out straight away, I guess this is something we inherited from
the git code base, long ago.

Ok, I think I'll try to use both, i.e. make 'perf foo --help' fall back
to '-h' when the man page is not found, with an extra warning, at the
top, when doing that.

- Arnaldo
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