linux-kernel - Re: [RFC/PATCH] perf report: Show random usage tip on the help line

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Message-ID: <20160105205552.GA25916@kernel.org>
Date:	Tue, 5 Jan 2016 17:55:52 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	"Wangnan (F)" <wangnan0@...wei.com>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jiri Olsa <jolsa@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Stephane Eranian <eranian@...gle.com>,
	Andi Kleen <andi@...stfloor.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Subject: Re: [RFC/PATCH] perf report: Show random usage tip on the help line

Em Wed, Jan 06, 2016 at 04:19:25AM +0900, Namhyung Kim escreveu:
> Hi Arnaldo,
> 
> On Tue, Jan 05, 2016 at 01:40:10PM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Tue, Jan 05, 2016 at 07:43:07PM +0900, Namhyung Kim escreveu:
> > > On Tue, Jan 05, 2016 at 02:32:47PM +0800, Wangnan (F) wrote:
> > > >  3. What about creating a tools/perf/Documentation/tips.txt and generate
> > > > tips table dynamically?

> > > I don't see much difference doing that.  I guess most of users don't
> > > want to go to see the documentation anyway.  Do I miss something?

> > Yes, I think what he suggests is to use:
> >   	tips = strlist__new("file://tools/perf/Documentation/tips.txt", NULL);
> > 	tip = strlist__entry(tips, random() % strlist__nr_entries(tips));

> > Or even do as 'perf trace' does, and have a directory with one file per
> > tip, see 005438a8eef0 ("perf trace: Support 'strace' syscall event
> > groups")
 
> Thanks for the info.  It's really easy doing that, nice..
 
> I understand what he suggesting, but not why. :)

Because then adding new tips will not require rebuilding the tool?

I thought you didn't understood his point, judging by your "I guess most
of users don't want to go to see the documentation anyway" statement,
which I thought meant you thought that users would have to look at some
man-page or documentation directory to go find some particular file with
the tips...

- Arnaldo
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