perf timechart: Adjust perf timechart to the new power events
[linux-2.6.git] / tools / perf / util / parse-events.c
index 3a142e9..649083f 100644 (file)
@@ -913,6 +913,47 @@ static void print_tracepoint_events(void)
 }
 
 /*
+ * Check whether event is in <debugfs_mount_point>/tracing/events
+ */
+
+int is_valid_tracepoint(const char *event_string)
+{
+       DIR *sys_dir, *evt_dir;
+       struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
+       char evt_path[MAXPATHLEN];
+       char dir_path[MAXPATHLEN];
+
+       if (debugfs_valid_mountpoint(debugfs_path))
+               return 0;
+
+       sys_dir = opendir(debugfs_path);
+       if (!sys_dir)
+               return 0;
+
+       for_each_subsystem(sys_dir, sys_dirent, sys_next) {
+
+               snprintf(dir_path, MAXPATHLEN, "%s/%s", debugfs_path,
+                        sys_dirent.d_name);
+               evt_dir = opendir(dir_path);
+               if (!evt_dir)
+                       continue;
+
+               for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
+                       snprintf(evt_path, MAXPATHLEN, "%s:%s",
+                                sys_dirent.d_name, evt_dirent.d_name);
+                       if (!strcmp(evt_path, event_string)) {
+                               closedir(evt_dir);
+                               closedir(sys_dir);
+                               return 1;
+                       }
+               }
+               closedir(evt_dir);
+       }
+       closedir(sys_dir);
+       return 0;
+}
+
+/*
  * Print the help text for the event symbols:
  */
 void print_events(void)