X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;ds=sidebyside;f=lttng-sessiond%2Fmain.c;h=40ad9add84747538fe860662f95e5bf19f5a9a18;hb=1f3580c7152869e3827f475a713a9567f8357bc8;hp=ea3853c1a6f19b5a0132e86f287e82b3d313073a;hpb=322585731ced1adba36cddcb8bdd5d997d1b2e3e;p=lttng-tools.git

diff --git a/lttng-sessiond/main.c b/lttng-sessiond/main.c
index ea3853c1a..40ad9add8 100644
--- a/lttng-sessiond/main.c
+++ b/lttng-sessiond/main.c
@@ -711,6 +711,19 @@ error:
 	return ret;
 }
 
+/*
+ * For each tracing session, update newly registered apps.
+ */
+static void update_ust_app(int app_sock)
+{
+	struct ltt_session *sess, *stmp;
+
+	/* For all tracing session(s) */
+	cds_list_for_each_entry_safe(sess, stmp, &session_list_ptr->head, list) {
+		ust_app_global_update(sess->ust_session, app_sock);
+	}
+}
+
 /*
  * This thread manage event coming from the kernel.
  *
@@ -1062,6 +1075,12 @@ static void *thread_manage_apps(void *data)
 						DBG("Apps with sock %d added to poll set",
 								ust_cmd.sock);
 					}
+
+					/*
+					 * Add channel(s) and event(s) to newly registered apps
+					 * from lttng global UST domain.
+					 */
+					update_ust_app(ust_cmd.sock);
 					break;
 				}
 			} else {
@@ -1699,6 +1718,7 @@ static int create_ust_session(struct ltt_session *session,
 		/* No ustctl for the global UST domain */
 		break;
 	default:
+		ERR("Unknown UST domain on create session %d", domain->type);
 		goto error;
 	}
 	session->ust_session = lus;
@@ -2228,6 +2248,10 @@ static int cmd_enable_event(struct ltt_session *session, int domain,
 			ret = LTTCOMM_UST_ENABLE_FAIL;
 			goto error;
 		}
+
+		rcu_read_lock();
+		hashtable_add_unique(uchan->events, &uevent->node);
+		rcu_read_unlock();
 		break;
 	}
 	case LTTNG_DOMAIN_UST_EXEC_NAME:
@@ -2410,6 +2434,9 @@ static int cmd_start_trace(struct ltt_session *session)
 		kernel_wait_quiescent(kernel_tracer_fd);
 	}
 
+	/* Flag session that trace should start automatically */
+	usess->start_trace = 1;
+
 	ret = ust_app_start_trace(usess);
 	if (ret < 0) {
 		ret = LTTCOMM_UST_START_FAIL;