X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=liblttng-ust%2Fltt-events.c;h=ee88b43142d6e39c57f974102ba45328a7aef210;hb=31c12beac8ce45308a787227d1d03217523ac219;hp=9751089c564f6830cb449eceb084200593dab2ae;hpb=d9a9a33b2cb4e152573fcd0da3eb82ac56a4bb81;p=lttng-ust.git

diff --git a/liblttng-ust/ltt-events.c b/liblttng-ust/ltt-events.c
index 9751089c..ee88b431 100644
--- a/liblttng-ust/ltt-events.c
+++ b/liblttng-ust/ltt-events.c
@@ -309,10 +309,20 @@ int ltt_session_enable(struct ltt_session *session)
 	cds_list_for_each_entry(chan, &session->chan, list) {
 		if (chan->header_type)
 			continue;		/* don't change it if session stop/restart */
+		/*
+		 * Because we don't use any timer in the application, we
+		 * currently cannot guarantee that we have frequent
+		 * events that let us detect 27-bit overflows.
+		 * Therefore, for now, we force large event headers,
+		 * which contain 64-bit timestamps.
+		 */
+		chan->header_type = 2;  /* large */
+#if 0
 		if (chan->free_event_id < 31)
 			chan->header_type = 1;	/* compact */
 		else
 			chan->header_type = 2;	/* large */
+#endif //0
 	}
 
 	CMM_ACCESS_ONCE(session->active) = 1;