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authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2011-10-04 19:45:04 +0900
committerGreg Kroah-Hartman <gregkh@suse.de>2011-11-11 09:43:12 -0800
commitfa73b411b41b050e212a20fc33ab45f2eb781c24 (patch)
tree368ae155b6e27801c7c9497c35d6ff71a2bf272b /tools/perf
parent4921487cb0a15e3fb28bc0b2410890f8fe7b161e (diff)
perf probe: Fix to show correct error string
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>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/util/probe-event.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 1c7bfa5fe0a8..eb25900e2211 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -1956,8 +1956,10 @@ static int __del_trace_probe_event(int fd, struct str_node *ent)
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;