linux-kernel - Re: [PATCH 08/17] perf hists browser: Fix context menu item

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Message-ID: <20160121235133.GF4034@kernel.org>
Date:	Thu, 21 Jan 2016 20:51:33 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Jiri Olsa <jolsa@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Stephane Eranian <eranian@...gle.com>,
	Andi Kleen <andi@...stfloor.org>,
	Wang Nan <wangnan0@...wei.com>
Subject: Re: [PATCH 08/17] perf hists browser: Fix context menu item

Em Thu, Jan 21, 2016 at 01:07:10PM +0900, Namhyung Kim escreveu:
> On Wed, Jan 20, 2016 at 09:52:45PM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Sun, Jan 17, 2016 at 01:03:08AM +0900, Namhyung Kim escreveu:
> > > When symbol sort key is not given, it doesn't show any item other than
> > > exit.  Check sort key to select possible items.  Also check items more
> > > strictly using sort key information.

> > So, without this patch when I press enter on 'perf top' I can zoom into
> > threads, with it I lose that option.
 
> Yes, but it was incorrect information.  The default sort key of 'perf
> top' doesn't contain 'comm' (or 'pid') so hist entries it shows can
> have samples from different threads.  The result is that it only shows
> thread of the first sample of the entry.  Filtering based on this
> incorrect info should be avoided IMHO.

Ok, agreed, but this patch is doing way too many things at once, please
take a look at my current perf/core branch, it has the first few patches
I carved out from this one, see if you are ok with it, will continue.

And this is not hierarchy related, so will go first, as fixes in
perf/core.

- Arnaldo