X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=lib%2Fringbuffer%2Ffrontend_types.h;h=5c7437f8127b903ca5acade4623d0bf3af689ea7;hb=71c1d8431c8b94c34332cf2fbdbd7c9dc5f1489a;hp=fe208b676e0f035f8bd4b9794ca94f79f24ca8dd;hpb=d01202ff1f043dd04f62ab77aacea3c26cb65eb3;p=lttng-modules.git

diff --git a/lib/ringbuffer/frontend_types.h b/lib/ringbuffer/frontend_types.h
index fe208b67..5c7437f8 100644
--- a/lib/ringbuffer/frontend_types.h
+++ b/lib/ringbuffer/frontend_types.h
@@ -19,6 +19,7 @@
 #include <linux/kref.h>
 #include "../../wrapper/ringbuffer/config.h"
 #include "../../wrapper/ringbuffer/backend_types.h"
+#include "../../wrapper/spinlock.h"
 #include "../../lib/prio_heap/lttng_prio_heap.h"	/* For per-CPU read-side iterator */
 
 /*
@@ -128,6 +129,7 @@ struct lib_ring_buffer {
 	union v_atomic records_count;	/* Number of records written */
 	union v_atomic records_overrun;	/* Number of overwritten records */
 	wait_queue_head_t read_wait;	/* reader buffer-level wait queue */
+	wait_queue_head_t write_wait;	/* writer buffer-level wait queue (for metadata only) */
 	int finalized;			/* buffer has been finalized */
 	struct timer_list switch_timer;	/* timer for periodical switch */
 	struct timer_list read_timer;	/* timer for read poll */