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authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2011-10-04 14:45:04 +0400
committerSteven Rostedt <rostedt@goodmis.org>2011-10-10 23:13:23 +0400
commit44a56040a0037a845d5fa218dffde464579f0cab (patch)
tree8a1f3397210cc2e8ebb223f7a2bd1fec642a6246
parent02ca1521ad404cf566e0075848f80d064c0a0503 (diff)
downloadlinux-44a56040a0037a845d5fa218dffde464579f0cab.tar.xz
perf probe: Fix to show correct error string
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> Cc: stable@kernel.org Link: http://lkml.kernel.org/r/20111004104504.14591.41266.stgit@fedora15 Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
-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;