Commit 44a56040 authored Oct 04, 2011 by Masami Hiramatsu Committed by Steven Rostedt Oct 10, 2011

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>

parent 02ca1521

tools/perf/util/probe-event.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -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;