X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fcmd.c;h=33ab492daf330eacacc239646b866b612d5975e8;hp=0b97ed61a1ec54fc928b1e5a69890ede4002a162;hb=b11feea58d73a097e4e1447473798822da28a70d;hpb=b223ca945c74c9c4dca7a9bf803c269b937b51e8

diff --git a/src/bin/lttng-sessiond/cmd.c b/src/bin/lttng-sessiond/cmd.c
index 0b97ed61a..33ab492da 100644
--- a/src/bin/lttng-sessiond/cmd.c
+++ b/src/bin/lttng-sessiond/cmd.c
@@ -220,7 +220,9 @@ static int list_lttng_agent_events(struct agent *agt,
 
 	DBG3("Listing agent events");
 
+	rcu_read_lock();
 	nb_event = lttng_ht_get_count(agt->events);
+	rcu_read_unlock();
 	if (nb_event == 0) {
 		ret = nb_event;
 		goto error;
@@ -2415,12 +2417,14 @@ ssize_t cmd_list_domains(struct ltt_session *session,
 		DBG3("Listing domains found UST global domain");
 		nb_dom++;
 
+		rcu_read_lock();
 		cds_lfht_for_each_entry(session->ust_session->agents->ht, &iter.iter,
 				agt, node.node) {
 			if (agt->being_used) {
 				nb_dom++;
 			}
 		}
+		rcu_read_unlock();
 	}
 
 	if (!nb_dom) {
@@ -2443,6 +2447,7 @@ ssize_t cmd_list_domains(struct ltt_session *session,
 		(*domains)[index].buf_type = session->ust_session->buffer_type;
 		index++;
 
+		rcu_read_lock();
 		cds_lfht_for_each_entry(session->ust_session->agents->ht, &iter.iter,
 				agt, node.node) {
 			if (agt->being_used) {
@@ -2451,6 +2456,7 @@ ssize_t cmd_list_domains(struct ltt_session *session,
 				index++;
 			}
 		}
+		rcu_read_unlock();
 	}
 end:
 	return nb_dom;
@@ -2482,8 +2488,10 @@ ssize_t cmd_list_channels(int domain, struct ltt_session *session,
 		break;
 	case LTTNG_DOMAIN_UST:
 		if (session->ust_session != NULL) {
+			rcu_read_lock();
 			nb_chan = lttng_ht_get_count(
-					session->ust_session->domain_global.channels);
+				session->ust_session->domain_global.channels);
+			rcu_read_unlock();
 		}
 		DBG3("Number of UST global channels %zd", nb_chan);
 		if (nb_chan < 0) {
@@ -2544,10 +2552,12 @@ ssize_t cmd_list_events(int domain, struct ltt_session *session,
 			struct lttng_ht_iter iter;
 			struct agent *agt;
 
+			rcu_read_lock();
 			cds_lfht_for_each_entry(session->ust_session->agents->ht,
 					&iter.iter, agt, node.node) {
 				nb_event = list_lttng_agent_events(agt, events);
 			}
+			rcu_read_unlock();
 		}
 		break;
 	default: