-int event_ust_enable_all_tracepoints(struct ltt_ust_session *usess,
- struct ltt_ust_channel *uchan,
- char *filter_expression,
- struct lttng_filter_bytecode *filter);
-int event_ust_disable_all_tracepoints(struct ltt_ust_session *usess,
- struct ltt_ust_channel *uchan);
-