X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Flib%2Flttng-ctl%2Flttng-ctl.c;h=1d92facf05cf866ee757a0acc247b5f0225e8b0c;hp=dfaa47f7d7d3efb49aa109b9d05dc4dfc53af857;hb=1e46a50ff4c21c973767287bd6e79af04c81c283;hpb=dad47fc4c65ec0acbfedc676895833b465d25cd6

diff --git a/src/lib/lttng-ctl/lttng-ctl.c b/src/lib/lttng-ctl/lttng-ctl.c
index dfaa47f7d..1d92facf0 100644
--- a/src/lib/lttng-ctl/lttng-ctl.c
+++ b/src/lib/lttng-ctl/lttng-ctl.c
@@ -466,7 +466,10 @@ int lttng_stop_tracing(const char *session_name)
 }
 
 /*
- * Add context to event or/and channel.
+ * Add context to event and/or channel.
+ * If event_name is NULL, the context is applied to all events of the channel.
+ * If channel_name is NULL, a lookup of the event's channel is done.
+ * If both are NULL, the context is applied to all events of all channels.
  *
  * Returns the size of the returned payload data or a negative error code.
  */