X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=lttng-events.h;h=4bf8920f3fc18fe74b24704f7f45e1c4e244ec61;hb=9616f0bf9524fc6b8ad184e87f4935c97f78a8bc;hp=d2a039e8f664cacf5aea2d91b86aafdd7e31acaa;hpb=5b3cf4f924befda843a7736daf84f8ecae5e86a4;p=lttng-modules.git

diff --git a/lttng-events.h b/lttng-events.h
index d2a039e8..4bf8920f 100644
--- a/lttng-events.h
+++ b/lttng-events.h
@@ -361,6 +361,9 @@ struct lttng_channel_ops {
 	int (*sequence_number) (const struct lib_ring_buffer_config *config,
 			struct lib_ring_buffer *bufb,
 			uint64_t *seq);
+	int (*instance_id) (const struct lib_ring_buffer_config *config,
+			struct lib_ring_buffer *bufb,
+			uint64_t *id);
 };
 
 struct lttng_transport {
@@ -418,6 +421,7 @@ struct lttng_metadata_stream {
 	wait_queue_head_t read_wait;	/* Reader buffer-level wait queue */
 	struct list_head list;		/* Stream list */
 	struct lttng_transport *transport;
+	uint64_t version;		/* Current version of the metadata cache */
 };
 
 
@@ -463,7 +467,8 @@ struct lttng_metadata_cache {
 	struct kref refcount;		/* Metadata cache usage */
 	struct list_head metadata_stream;	/* Metadata stream list */
 	uuid_le uuid;			/* Trace session unique ID (copy) */
-	struct mutex lock;
+	struct mutex lock;		/* Produce/consume lock */
+	uint64_t version;		/* Current version of the metadata */
 };
 
 void lttng_lock_sessions(void);
@@ -484,6 +489,7 @@ struct lttng_session *lttng_session_create(void);
 int lttng_session_enable(struct lttng_session *session);
 int lttng_session_disable(struct lttng_session *session);
 void lttng_session_destroy(struct lttng_session *session);
+int lttng_session_metadata_regenerate(struct lttng_session *session);
 void metadata_cache_destroy(struct kref *kref);
 
 struct lttng_channel *lttng_channel_create(struct lttng_session *session,
@@ -678,6 +684,8 @@ int lttng_kretprobes_register(const char *name,
 		struct lttng_event *event_exit);
 void lttng_kretprobes_unregister(struct lttng_event *event);
 void lttng_kretprobes_destroy_private(struct lttng_event *event);
+int lttng_kretprobes_event_enable_state(struct lttng_event *event,
+	int enable);
 #else
 static inline
 int lttng_kretprobes_register(const char *name,
@@ -699,6 +707,13 @@ static inline
 void lttng_kretprobes_destroy_private(struct lttng_event *event)
 {
 }
+
+static inline
+int lttng_kretprobes_event_enable_state(struct lttng_event *event,
+	int enable)
+{
+	return -ENOSYS;
+}
 #endif
 
 #ifdef CONFIG_DYNAMIC_FTRACE