int event_ust_disable_tracepoint(struct ltt_ust_session *usess,
struct ltt_ust_channel *uchan, char *event_name);
int event_agent_enable(struct ltt_ust_session *usess, struct agent *agt,
int event_ust_disable_tracepoint(struct ltt_ust_session *usess,
struct ltt_ust_channel *uchan, char *event_name);
int event_agent_enable(struct ltt_ust_session *usess, struct agent *agt,