X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=ltt-ring-buffer-metadata-client.h;h=06936aaa93cef7b12f28931d71767ded09dbff36;hb=da4e23320ee3bed6a19fe29c8a0b8b78387be7f3;hp=8b1079d98c7c930dced941601533b9a407a272d1;hpb=254ec7bc4c72da11a4e3f2c90904b111a06a2c55;p=lttng-modules.git

diff --git a/ltt-ring-buffer-metadata-client.h b/ltt-ring-buffer-metadata-client.h
index 8b1079d9..06936aaa 100644
--- a/ltt-ring-buffer-metadata-client.h
+++ b/ltt-ring-buffer-metadata-client.h
@@ -142,7 +142,7 @@ static const struct lib_ring_buffer_config client_config = {
 	.sync = RING_BUFFER_SYNC_GLOBAL,
 	.mode = RING_BUFFER_MODE_TEMPLATE,
 	.backend = RING_BUFFER_PAGE,
-	.output = RING_BUFFER_SPLICE,
+	.output = RING_BUFFER_OUTPUT_TEMPLATE,
 	.oops = RING_BUFFER_OOPS_CONSISTENCY,
 	.ipi = RING_BUFFER_IPI_BARRIER,
 	.wakeup = RING_BUFFER_WAKEUP_BY_TIMER,
@@ -177,6 +177,20 @@ struct lib_ring_buffer *ltt_buffer_read_open(struct channel *chan)
 	return NULL;
 }
 
+static
+int ltt_buffer_has_read_closed_stream(struct channel *chan)
+{
+	struct lib_ring_buffer *buf;
+	int cpu;
+
+	for_each_channel_cpu(cpu, chan) {
+		buf = channel_get_ring_buffer(&client_config, chan, cpu);
+		if (!atomic_long_read(&buf->active_readers))
+			return 1;
+	}
+	return 0;
+}
+
 static
 void ltt_buffer_read_close(struct lib_ring_buffer *buf)
 {
@@ -250,6 +264,8 @@ static struct ltt_transport ltt_relay_transport = {
 		.channel_create = _channel_create,
 		.channel_destroy = ltt_channel_destroy,
 		.buffer_read_open = ltt_buffer_read_open,
+		.buffer_has_read_closed_stream =
+			ltt_buffer_has_read_closed_stream,
 		.buffer_read_close = ltt_buffer_read_close,
 		.event_reserve = ltt_event_reserve,
 		.event_commit = ltt_event_commit,
@@ -269,7 +285,6 @@ static int __init ltt_ring_buffer_client_init(void)
 	 * vmalloc'd module pages when it is built as a module into LTTng.
 	 */
 	wrapper_vmalloc_sync_all();
-	printk(KERN_INFO "LTT : ltt ring buffer metadata client init\n");
 	ltt_transport_register(&ltt_relay_transport);
 	return 0;
 }
@@ -278,7 +293,6 @@ module_init(ltt_ring_buffer_client_init);
 
 static void __exit ltt_ring_buffer_client_exit(void)
 {
-	printk(KERN_INFO "LTT : ltt ring buffer metadata client exit\n");
 	ltt_transport_unregister(&ltt_relay_transport);
 }