linux-kernel - [tip:perf/core] perf record: Fix existing process callgraph symbol

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Date:	Mon, 8 Feb 2010 15:57:33 GMT
From:	"tip-bot for austin_zhang@...ux.intel.com" 
	<austin_zhang@...ux.intel.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, acme@...hat.com, paulus@...ba.org,
	hpa@...or.com, mingo@...hat.com, a.p.zijlstra@...llo.nl,
	efault@....de, fweisbec@...il.com, tglx@...utronix.de,
	austin_zhang@...ux.intel.com, mingo@...e.hu
Subject: [tip:perf/core] perf record: Fix existing process callgraph symbol

Commit-ID:  f7e7ee36757f68778700cde1aaed89e1d23e59fd
Gitweb:     http://git.kernel.org/tip/f7e7ee36757f68778700cde1aaed89e1d23e59fd
Author:     austin_zhang@...ux.intel.com <austin_zhang@...ux.intel.com>
AuthorDate: Fri, 5 Feb 2010 09:02:42 -0800
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Mon, 8 Feb 2010 16:55:52 +0100

perf record: Fix existing process callgraph symbol

When 'perf record -g' a existing process, even with debuginfo
packages, still cannnot get symbol from 'perf report'.

try:

 perf record -g -p `pidof xxx` -f
 perf report

    68.26%    :1181           b74870f2  [.] 0x000000b74870f2
              |
              |--32.09%-- 0xb73b5b44
              |          0xb7487102
              |          0xb748a4e2
              |          0xb748633d
              |          0xb73b41cd
              |          0xb73b4467
              |          0xb747d531

The reason is: for existing process, in __cmd_record(),
the pid is 0 rather than the existing process id.

Signed-off-by: Austin Zhang <austin_zhang@...ux.intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Mike Galbraith <efault@....de>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
LKML-Reference: <4710.10.255.24.35.1265389362.squirrel@...ux.intel.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 tools/perf/builtin-record.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 3ad599b..771533c 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -570,7 +570,7 @@ static int __cmd_record(int argc, const char **argv)
 	}
 
 	if (!system_wide && profile_cpu == -1)
-		event__synthesize_thread(pid, process_synthesized_event,
+		event__synthesize_thread(target_pid, process_synthesized_event,
 					 session);
 	else
 		event__synthesize_threads(process_synthesized_event, session);
--
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