int ust_metadata_channel_statedump(struct ust_registry_session *session,
struct ust_registry_channel *chan);
int ust_metadata_event_statedump(struct ust_registry_session *session,
int ust_metadata_channel_statedump(struct ust_registry_session *session,
struct ust_registry_channel *chan);
int ust_metadata_event_statedump(struct ust_registry_session *session,