linux-kernel - [PATCH -tip 3/4] perf probe: Fix to exit callback soon after finding too many probe points

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Message-ID: <20100421195632.24664.42598.stgit@localhost6.localdomain6>
Date:	Wed, 21 Apr 2010 15:56:32 -0400
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	lkml <linux-kernel@...r.kernel.org>
Cc:	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Mike Galbraith <efault@....de>,
	Frederic Weisbecker <fweisbec@...il.com>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>
Subject: [PATCH -tip 3/4] perf probe: Fix to exit callback soon after finding
	too many probe points

Fix to exit callback soon after finding too many probe points.
Don't try to continue searching because it already failed.

Signed-off-by: Masami Hiramatsu <mhiramat@...hat.com>
Reported-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Mike Galbraith <efault@....de>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Ingo Molnar <mingo@...e.hu>
---

 tools/perf/util/probe-finder.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 3e79775..57b51ca 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -922,6 +922,8 @@ static int probe_point_inline_cb(Dwarf_Die *in_die, void *data)
 			 (uintmax_t)pf->addr);
 
 		param->retval = convert_probe_point(in_die, pf);
+		if (param->retval < 0)
+			return DWARF_CB_ABORT;
 	}
 
 	return DWARF_CB_OK;
@@ -1157,6 +1159,8 @@ static int line_range_funcdecl_cb(Dwarf_Die *sp_die, void *data)
 		return DWARF_CB_OK;
 
 	param->retval = line_range_add_line(src, lineno, lf->lr);
+	if (param->retval < 0)
+		return DWARF_CB_ABORT;
 	return DWARF_CB_OK;
 }
 


-- 
Masami Hiramatsu
e-mail: mhiramat@...hat.com
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