X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lttng-events.c;h=992ba58f2a96200650924dd6d0856b513b6eb529;hb=refs%2Fheads%2Fstable-2.7;hp=f9a19190ffc03be47ab8f8196a49f180c1b8dbc0;hpb=9928f84458c21d7a6cfafaced1fefbcb2a46596f;p=lttng-modules.git

diff --git a/lttng-events.c b/lttng-events.c
index f9a19190..992ba58f 100644
--- a/lttng-events.c
+++ b/lttng-events.c
@@ -52,6 +52,8 @@
 #include "lttng-abi-old.h"
 #include "lttng-endian.h"
 #include "wrapper/vzalloc.h"
+#include "wrapper/ringbuffer/backend.h"
+#include "wrapper/ringbuffer/frontend.h"
 
 #define METADATA_CACHE_DEFAULT_SIZE 4096
 
@@ -237,6 +239,12 @@ int lttng_session_enable(struct lttng_session *session)
 	/* We need to sync enablers with session before activation. */
 	lttng_session_sync_enablers(session);
 
+	/* Clear each stream's quiescent state. */
+	list_for_each_entry(chan, &session->chan, list) {
+		if (chan->channel_type != METADATA_CHANNEL)
+			lib_ring_buffer_clear_quiescent_channel(chan->chan);
+	}
+
 	ACCESS_ONCE(session->active) = 1;
 	ACCESS_ONCE(session->been_active) = 1;
 	ret = _lttng_session_metadata_statedump(session);
@@ -255,6 +263,7 @@ end:
 int lttng_session_disable(struct lttng_session *session)
 {
 	int ret = 0;
+	struct lttng_channel *chan;
 
 	mutex_lock(&sessions_mutex);
 	if (!session->active) {
@@ -266,6 +275,12 @@ int lttng_session_disable(struct lttng_session *session)
 	/* Set transient enabler state to "disabled" */
 	session->tstate = 0;
 	lttng_session_sync_enablers(session);
+
+	/* Set each stream's quiescent state. */
+	list_for_each_entry(chan, &session->chan, list) {
+		if (chan->channel_type != METADATA_CHANNEL)
+			lib_ring_buffer_set_quiescent_channel(chan->chan);
+	}
 end:
 	mutex_unlock(&sessions_mutex);
 	return ret;