Re: [PATCH 6/7] perf tools: Append callchains only when requested
From: Namhyung Kim
Date: Wed Jan 07 2015 - 02:31:14 EST
Hi Arnaldo,
On Mon, Jan 05, 2015 at 09:49:24AM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sun, Jan 04, 2015 at 12:01:26AM +0900, Namhyung Kim escreveu:
> > On Sat, Jan 3, 2015 at 11:25 AM, Arnaldo Carvalho de Melo
> > <acme@xxxxxxxxxx> wrote:
> > > Em Mon, Dec 22, 2014 at 01:44:14PM +0900, Namhyung Kim escreveu:
> > >> The perf report --children can be called with callchain disabled so no
> > >> need to append callchains. Actually the root of callchain tree is not
> > >> initialized properly in this case.
>
> > > I should have caught this using 'perf test', but it slipped
> > > thru, please try running 'perf test cumulation', I noticed that it fails
> > > and that if I revert this changeset it works again, can you please
> > > check?
>
> > This change should not affect the test result, but I guess the test
> > somehow relied on the undefined behavior. Actually I posted a patch
> > to fix this problem. So please take a look at the link below:
>
> > https://lkml.org/lkml/2014/12/22/561
>
> Ok, missed this one, will get it on perf/urgent and look if there are
> patches pending merging in that pull req.
Could please consider applying it below:
https://lkml.org/lkml/2014/12/24/13
Thanks,
Namhyung
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