X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=lib%2Fringbuffer%2Ffrontend_types.h;h=e8c4c5ce8a4f5dd89da66cce76d5c8af7e66e356;hb=9115fbdc0d5b0d69b32d3d4d924624fbbe22638e;hp=d269c00a685221086448b249724326f6acc5b81f;hpb=f3bc08c50e1b302bceea699027d889fd6d9af525;p=lttng-modules.git

diff --git a/lib/ringbuffer/frontend_types.h b/lib/ringbuffer/frontend_types.h
index d269c00a..e8c4c5ce 100644
--- a/lib/ringbuffer/frontend_types.h
+++ b/lib/ringbuffer/frontend_types.h
@@ -16,6 +16,7 @@
  * Dual LGPL v2.1/GPL v2 license.
  */
 
+#include <linux/kref.h>
 #include "../../wrapper/ringbuffer/config.h"
 #include "../../wrapper/ringbuffer/backend_types.h"
 #include "../../wrapper/prio_heap.h"	/* For per-CPU read-side iterator */
@@ -62,7 +63,7 @@ struct channel {
 	int hp_iter_enable:1;			/* Enable hp iter notif. */
 	wait_queue_head_t read_wait;		/* reader wait queue */
 	struct channel_iter iter;		/* Channel read-side iterator */
-	atomic_long_t read_ref;			/* Reader reference count */
+	struct kref ref;			/* Reference count */
 };
 
 /* Per-subbuffer commit counters used on the hot path */
@@ -138,6 +139,12 @@ struct lib_ring_buffer {
 	int read_timer_enabled:1;	/* Protected by ring_buffer_nohz_lock */
 };
 
+static inline
+void *channel_get_private(struct channel *chan)
+{
+	return chan->backend.priv;
+}
+
 /*
  * Issue warnings and disable channels upon internal error.
  * Can receive struct lib_ring_buffer or struct lib_ring_buffer_backend