lkml.org 
[lkml]   [2011]   [Nov]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[087/262] perf probe: Fix to show correct error string
3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>

commit 44a56040a0037a845d5fa218dffde464579f0cab upstream.

Fix perf probe to show correct error string when it
fails to delete an event. The write(2) returns -1
if failed, and errno stores real error number.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@elte.hu>
Link: http://lkml.kernel.org/r/20111004104504.14591.41266.stgit@fedora15
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
tools/perf/util/probe-event.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -1869,8 +1869,10 @@ static int __del_trace_probe_event(int f

pr_debug("Writing event: %s\n", buf);
ret = write(fd, buf, strlen(buf));
- if (ret < 0)
+ if (ret < 0) {
+ ret = -errno;
goto error;
+ }

printf("Remove event: %s\n", ent->s);
return 0;



\
 
 \ /
  Last update: 2011-11-10 06:21    [W:0.979 / U:1.216 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site