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Date:	Mon, 6 Oct 2014 11:07:26 +0200
From:	Robert Richter <rric@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	Jean Pihet <jean.pihet@...aro.org>, Borislav Petkov <bp@...en8.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Fu Wei <fu.wei@...aro.org>, Jiri Olsa <jolsa@...hat.com>,
	David Ahern <dsahern@...il.com>, Ingo Molnar <mingo@...nel.org>
Subject: Re: perf & rasd integration plan

On 30.09.14 10:24:16, Arnaldo Carvalho de Melo wrote:
> Em Tue, Sep 30, 2014 at 11:06:21AM +0200, Jean Pihet escreveu:
> > The plan is to move the small and generic functions first: util,
> > xyarray, cpumap, thread_map etc; then evlist, evsel, trace-event,
> > trace-event-parse; and finally integrate rasd into the tools/ dir.
> > 
> > Any thought? Can evlist, evsel etc. be moved at once?
> > 
> > Patches should come soon, when time allows.
> 
> Why don't you add it to tools/rasd/ and in tools/rasd/Makefile you just
> go on and add tools/perf/util/evlist.o et all to be linked directly, as
> a first step.
> 
> Then, as a second step, we can create a tools/lib/perf/evlist.c having
> what is currently used by both tools/perf/ and tools/rasd/, i.e. what is
> proven to be useful for something other than perf.

It would be good to have tools/lib/perf or so with some base
implementation to setup and connect to perf buffers. This is useful
for tools not only in tools/. The rasd would be a good reference for
this regardless if it is in tools/ or not. I am not sure whether and
when rasd will be moved there.

> As the need arises, we go on moving things into tools/lib/perf/evlist.c
> et all from wherever it appeared first, be it from tools/rasd/,
> tools/perf/util/evlist.c or anywhere else.
> 
> Initial rule being that once it is used by multiple tools living in
> tools/, then it deserves a place in tools/lib/perf/.

So this wouldn't quite work well as it excludes tools not in tools/.

-Robert

> 
> Ditto for other stuff currently living in tools/perf/util/.
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