perf parse-events: Add debug logging to perf_event

If verbose is enabled and parse_event is called, typically by tests,
log failures.

Signed-off-by: Ian Rogers <[e-mail]>
Signed-off-by: Namhyung Kim <[e-mail]>

tools/perf/util/parse-events.c

···
 
 	parse_events_error__init(&err);
 	ret = parse_events(evlist, str, &err);
+	if (ret && verbose > 0)
+		parse_events_error__print(&err, str);
 	parse_events_error__exit(&err);
 	return ret;
 }