linux-kernel - RE: [PATCH V5 1/1] perf tool:perf diff support for different binaries

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Date:	Tue, 2 Dec 2014 15:51:13 +0000
From:	"Liang, Kan" <kan.liang@...el.com>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
CC:	"jolsa@...hat.com" <jolsa@...hat.com>,
	"namhyung@...nel.org" <namhyung@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>
Subject: RE: [PATCH V5 1/1] perf tool:perf diff support for different
 binaries



> 
> Em Fri, Nov 21, 2014 at 10:55:48AM -0500, kan.liang@...el.com escreveu:
> > From: Kan Liang <kan.liang@...el.com>
> >
> > Currently, the perf diff only works with same binaries. That's because
> > it compares the symbol start address. It doesn't work if the perf.data
> > comes from different binaries. This patch matches the function names.
> >
> > Here is a simple examples (Only change f2 and f3 functions location.)
> > There is no change in behavior, but the old perf diff display the
> > wrong differential profile.
> 
> [acme@zoo linux]$ am /wb/1.patch
> Applying: perf tool:perf diff support for different binaries
> /home/acme/git/linux/.git/rebase-apply/patch:23: trailing whitespace.
> If no parameters are passed the samples will be sorted by dso and symbol.
> /home/acme/git/linux/.git/rebase-apply/patch:26: trailing whitespace.
> symbols name.
> warning: 2 lines add whitespace errors.
> 

Sorry for the inconvenience, I will repost a clean version then.

Thanks,
Kan

> [1]+  Stopped                 am /wb/1.patch
> [acme@zoo linux]$
> 
> Fixing this up this time.
> 
> Please consider:
> 
> chmod +x .git/hooks/*
> 
> - Arnaldo
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