+/* read() from pipe */
+cycles_t time_ust_register_read_start;
+cycles_t time_ust_register_read_stop;
+/* register_traceable_app() time */
+cycles_t time_ust_register_add_start;
+cycles_t time_ust_register_add_stop;
+/* send register done command */
+cycles_t time_ust_register_done_start;
+cycles_t time_ust_register_done_stop;