perf list: Show error if tracepoints not available

[karo-tx-linux.git] / tools / perf / util / parse-events.c

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 98125319b158b7e6e588ba4adf861494b69e18d6..c90e55cf7e82ebc134fb827ca68f45385138f161 100644 (file)
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -998,8 +998,10 @@ void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
        char evt_path[MAXPATHLEN];
        char dir_path[MAXPATHLEN];
 
-       if (debugfs_valid_mountpoint(tracing_events_path))
+       if (debugfs_valid_mountpoint(tracing_events_path)) {
+               printf("  [ Tracepoints not available: %s ]\n", strerror(errno));
                return;
+       }
 
        sys_dir = opendir(tracing_events_path);
        if (!sys_dir)