linux-kernel - [tip:perf/probes] perf probe: Fix bugs in line range finder

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Message-ID: <tip-3cb8bc6ac95ff86147d11ee1d36d18e1ddf3637c@git.kernel.org>
Date:	Thu, 25 Feb 2010 19:30:52 GMT
From:	tip-bot for Masami Hiramatsu <mhiramat@...hat.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, paulus@...ba.org, acme@...hat.com,
	hpa@...or.com, mingo@...hat.com, efault@....de,
	peterz@...radead.org, ananth@...ibm.com,
	dle-develop@...ts.sourceforge.net, fweisbec@...il.com,
	tglx@...utronix.de, mhiramat@...hat.com, mingo@...e.hu,
	prasad@...ux.vnet.ibm.com, systemtap@...rces.redhat.com
Subject: [tip:perf/probes] perf probe: Fix bugs in line range finder

Commit-ID:  3cb8bc6ac95ff86147d11ee1d36d18e1ddf3637c
Gitweb:     http://git.kernel.org/tip/3cb8bc6ac95ff86147d11ee1d36d18e1ddf3637c
Author:     Masami Hiramatsu <mhiramat@...hat.com>
AuthorDate: Thu, 25 Feb 2010 08:35:27 -0500
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Thu, 25 Feb 2010 17:49:28 +0100

perf probe: Fix bugs in line range finder

Fix find_line_range_by_line() to init line_list and remove
misconseptional found marking which should be done when
real lines are found (if there is no lines probe-able,
find_line_range() should return 0).

Signed-off-by: Masami Hiramatsu <mhiramat@...hat.com>
Cc: systemtap <systemtap@...rces.redhat.com>
Cc: DLE <dle-develop@...ts.sourceforge.net>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Mike Galbraith <efault@....de>
Cc: K.Prasad <prasad@...ux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Ananth N Mavinakayanahalli <ananth@...ibm.com>
LKML-Reference: <20100225133527.6725.52418.stgit@...alhost6.localdomain6>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 tools/perf/util/probe-finder.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 1b2124d..3e10dbe 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -788,6 +788,7 @@ static void find_line_range_by_line(struct line_finder *lf)
 	Dwarf_Addr addr;
 	int ret;
 
+	INIT_LIST_HEAD(&lf->lr->line_list);
 	ret = dwarf_srclines(lf->cu_die, &lines, &cnt, &__dw_error);
 	DIE_IF(ret != DW_DLV_OK);
 
@@ -848,8 +849,6 @@ static int linefunc_callback(struct die_link *dlink, void *data)
 		lr->start = lf->lno_s;
 		lr->end = lf->lno_e;
 		find_line_range_by_line(lf);
-		/* If we find a target function, this should be end. */
-		lf->found = 1;
 		return 1;
 	}
 	return 0;
--
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