linux-kernel - Re: [PATCH V3 3/5] perf,tools: Dump per-sample freq/CPU%/CORE

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Message-ID: <20150804175334.GD3126@kernel.org>
Date:	Tue, 4 Aug 2015 14:53:34 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	"Liang, Kan" <kan.liang@...el.com>
Cc:	Jiri Olsa <jolsa@...hat.com>,
	"a.p.zijlstra@...llo.nl" <a.p.zijlstra@...llo.nl>,
	"luto@...nel.org" <luto@...nel.org>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"eranian@...gle.com" <eranian@...gle.com>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>,
	"mark.rutland@....com" <mark.rutland@....com>,
	"Hunter, Adrian" <adrian.hunter@...el.com>,
	"jolsa@...nel.org" <jolsa@...nel.org>,
	"namhyung@...nel.org" <namhyung@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V3 3/5] perf,tools: Dump per-sample freq/CPU%/CORE_BUSY%
 in report -D

Em Tue, Aug 04, 2015 at 05:07:40PM +0000, Liang, Kan escreveu:
> > Em Wed, Jul 29, 2015 at 12:43:22PM -0300, Arnaldo Carvalho de Melo
> > > I'll take a look at how interesting it would be to have a
> > > evsel->evlist, that if NULL means the evsel is freestanding, but when
> > > it is linked to an evlist, then it will be there. This way we wouldn't
> > > have to pass (evlist, evsel) when the main purpose of a function is
> > > about an evsel but we need information that is logically associated to
> > > all evsels in a list, i.e. that is in evsel->evlist.

> > There are no cases where a function receives (evsel, evlist) with that evlist
> > containing that evsel :-\

> > Perhaps this will be the first, i.e. rename perf_session_env to perf_env,
> > then store it in evlist->env, then when processing something where we
> > have a evsel or evlist we can access that env from:

> >     evsel->evlist->env;

> > Will continue after lunch, trying to prototype what I just described.

> Hi Arnaldo,

> Have you got a chance to implement the prototype for evlist->env?

Not really, got sidetracked :-\

- Arnaldo
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