linux-kernel - perf/branch-history branch build broken with NO_DEMANGLE=1 perf hists browser: Print overhead percent value for first-level callchain

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Message-ID: <20141124154841.GD13167@kernel.org>
Date:	Mon, 24 Nov 2014 12:48:41 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	Jiri Olsa <jolsa@...hat.com>, David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Brendan Gregg <brendan.d.gregg@...il.com>
Subject: perf/branch-history branch build broken with NO_DEMANGLE=1 perf
 hists browser: Print overhead percent value for first-level callchain

Em Mon, Nov 24, 2014 at 12:32:04PM -0300, Arnaldo Carvalho de Melo escreveu:
> >        ^
> > In file included from util/srcline.c:11:0:
> > util/symbol.h:35:21: note: previous definition of ‘bfd_demangle’ was
> > here
> >  static inline char *bfd_demangle(void __maybe_unused *v,
> >                      ^
> > make[1]: *** [util/srcline.o] Error 1
> > make: *** [util/srcline.o] Error 2
> > make: Leaving directory `/home/git/linux/tools/perf'
> > [acme@zoo linux]$ 
> 
> bisected it down to:

What I have is on the perf/branch-history branch, we can't both include
bfd.h and symbol.h when NO_DEMANGLE=1, probably we should just move the
stub inline to symbol-elf.c, its only user, but I have to check further,
lunch time tho.

- Arnaldo
 
> 43e3229ef07a2dda81bda86a5b81ef8c2890ab63 is the first bad commit
> commit 43e3229ef07a2dda81bda86a5b81ef8c2890ab63
> Author: Andi Kleen <ak@...ux.intel.com>
> Date:   Wed Nov 12 18:05:27 2014 -0800
> 
>     perf callchain: Make get_srcline fall back to sym+offset
>     
>     When the source line is not found fall back to sym + offset.  This is
>     generally much more useful than a raw address.
>     
>     For this we need to pass in the symbol from the caller.
>     
>     For some callers it's awkward to compute, so we stay at the old
>     behaviour.
>     
>     Signed-off-by: Andi Kleen <ak@...ux.intel.com>
>     Cc: Jiri Olsa <jolsa@...hat.com>
>     Cc: Namhyung Kim <namhyung@...nel.org>
>     Link: http://lkml.kernel.org/r/1415844328-4884-10-git-send-email-andi@firstfloor.org
>     Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
> 
> :040000 040000 ae5e95c8dbfd9ab8e836707fcb2904e263f872c6
> 5979ba316f1d317c59866b0c3bf92c39fbdcde6b M	tools
> [acme@zoo linux]$
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