Metadata flush writes data from the cache

[lttng-modules.git] / lttng-events.c

diff --git a/lttng-events.c b/lttng-events.c
index 879097b4a8c7af056c0f0ec57dbef4d9376e7c57..b7e44221958d1230be181178dc3e90f5ce1990fa 100644 (file)
--- a/lttng-events.c
+++ b/lttng-events.c
@@ -553,6 +553,8 @@ void _lttng_event_destroy(struct lttng_event *event)
  * sessions_mutex), so we can do racy operations such as looking for
  * remaining space left in packet and write, since mutual exclusion
  * protects us from concurrent writes.
+ * Returns the number of bytes written in the channel, 0 if no data
+ * was written and a negative value on error.
  */
 int lttng_metadata_output_channel(struct lttng_metadata_stream *stream,
                struct channel *chan)