X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;ds=sidebyside;f=src%2Fcommon%2Fust-consumer%2Fust-consumer.c;h=ae933abc063950f066de68d8a8c1213526284bc5;hb=f666ae706d924ec91ca8212c402fd514ca572e88;hp=e933f9227c9bd48fc0ce46562cd2994565684157;hpb=843c71c5b9f7f6b04c5a1751a4679310dd07033b;p=lttng-tools.git

diff --git a/src/common/ust-consumer/ust-consumer.c b/src/common/ust-consumer/ust-consumer.c
index e933f9227..ae933abc0 100644
--- a/src/common/ust-consumer/ust-consumer.c
+++ b/src/common/ust-consumer/ust-consumer.c
@@ -1804,6 +1804,12 @@ void lttng_ustconsumer_close_stream_wakeup(struct lttng_consumer_stream *stream)
 	}
 }
 
+/*
+ * Please refer to consumer-timer.c before adding any lock within this
+ * function or any of its callees. Timers have a very strict locking
+ * semantic with respect to teardown. Failure to respect this semantic
+ * introduces deadlocks.
+ */
 int lttng_ustconsumer_request_metadata(struct lttng_consumer_local_data *ctx,
 		struct lttng_consumer_channel *channel)
 {