X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=ltt-events.c;h=184f2daa145caf573ff522bfd006aa3b8a8eaaca;hb=5dbbdb433f181be8b3c30e8cd03191b5408614ca;hp=c2a6a9206304f6e5a06b4b30e55a465d0f70f589;hpb=dda6a249b86e7f06e82fb18a26e981522d9e852d;p=lttng-modules.git

diff --git a/ltt-events.c b/ltt-events.c
index c2a6a920..184f2daa 100644
--- a/ltt-events.c
+++ b/ltt-events.c
@@ -49,7 +49,7 @@ void ltt_session_destroy(struct ltt_session *session)
 	int ret;
 
 	mutex_lock(&sessions_mutex);
-	session->active = 0;
+	ACCESS_ONCE(session->active) = 0;
 	list_for_each_entry(event, &session->events, list) {
 		ret = _ltt_event_unregister(event);
 		WARN_ON(ret);
@@ -73,7 +73,7 @@ int ltt_session_start(struct ltt_session *session)
 		ret = -EBUSY;
 		goto end;
 	}
-	session->active = 1;
+	ACCESS_ONCE(session->active) = 1;
 	synchronize_trace();	/* Wait for in-flight events to complete */
 end:
 	mutex_unlock(&sessions_mutex);
@@ -89,7 +89,7 @@ int ltt_session_stop(struct ltt_session *session)
 		ret = -EBUSY;
 		goto end;
 	}
-	session->active = 0;
+	ACCESS_ONCE(session->active) = 0;
 	synchronize_trace();	/* Wait for in-flight events to complete */
 end:
 	mutex_unlock(&sessions_mutex);
@@ -108,21 +108,20 @@ static struct ltt_transport *ltt_transport_find(char *name)
 }
 
 struct ltt_channel *ltt_channel_create(struct ltt_session *session,
-				       int overwrite, void *buf_addr,
+				       const char *transport_name,
+				       void *buf_addr,
 				       size_t subbuf_size, size_t num_subbuf,
 				       unsigned int switch_timer_interval,
 				       unsigned int read_timer_interval)
 {
 	struct ltt_channel *chan;
 	struct ltt_transport *transport;
-	char *transport_name;
 
 	mutex_lock(&sessions_mutex);
 	if (session->active) {
 		printk(KERN_WARNING "LTTng refusing to add channel to active session\n");
 		goto active;	/* Refuse to add channel to active session */
 	}
-	transport_name = overwrite ? "relay-overwrite" : "relay-discard";
 	transport = ltt_transport_find(transport_name);
 	if (!transport) {
 		printk(KERN_WARNING "LTTng transport %s not found\n",