liblttng-ust: exit loop early on event enabler match

[lttng-ust.git] / liblttng-ust / lttng-events.c

diff --git a/liblttng-ust/lttng-events.c b/liblttng-ust/lttng-events.c
index 255c4b953f9055141e72fae3449c37da5e56cb6b..9ee91ae355e442f7b06bcac54d82018ac1d637db 100644 (file)
--- a/liblttng-ust/lttng-events.c
+++ b/liblttng-ust/lttng-events.c
@@ -415,6 +415,9 @@ int lttng_session_enable(struct lttng_session *session)
        /* Set transient enabler state to "enabled" */
        session->tstate = 1;
 
+       /* We need to sync enablers with session before activation. */
+       lttng_session_sync_enablers(session);
+
        /*
         * Snapshot the number of events per channel to know the type of header
         * we need to use.
@@ -458,9 +461,6 @@ int lttng_session_enable(struct lttng_session *session)
                }
        }
 
-       /* We need to sync enablers with session before activation. */
-       lttng_session_sync_enablers(session);
-
        /* Set atomically the state to "active" */
        CMM_ACCESS_ONCE(session->active) = 1;
        CMM_ACCESS_ONCE(session->been_active) = 1;
@@ -600,8 +600,6 @@ int lttng_event_create(const struct lttng_event_desc *desc,
                goto sessiond_register_error;
        }
 
-       /* Populate lttng_event structure before tracepoint registration. */
-       cmm_smp_wmb();
        cds_list_add(&event->node, &chan->session->events_head);
        cds_hlist_add_head(&event->hlist, head);
        return 0;
@@ -766,8 +764,10 @@ void lttng_create_event_if_missing(struct lttng_enabler *enabler)
                        head = &session->events_ht.table[hash & (LTTNG_UST_EVENT_HT_SIZE - 1)];
                        cds_hlist_for_each_entry(event, node, head, hlist) {
                                if (event->desc == desc
-                                               && event->chan == enabler->chan)
+                                               && event->chan == enabler->chan) {
                                        found = 1;
+                                       break;
+                               }
                        }
                        if (found)
                                continue;
@@ -1112,6 +1112,32 @@ int lttng_attach_context(struct lttng_ust_context *context_param,
        case LTTNG_UST_CONTEXT_APP_CONTEXT:
                return lttng_ust_add_app_context_to_ctx_rcu(uargs->app_context.ctxname,
                        ctx);
+       case LTTNG_UST_CONTEXT_CGROUP_NS:
+               return lttng_add_cgroup_ns_to_ctx(ctx);
+       case LTTNG_UST_CONTEXT_IPC_NS:
+               return lttng_add_ipc_ns_to_ctx(ctx);
+       case LTTNG_UST_CONTEXT_MNT_NS:
+               return lttng_add_mnt_ns_to_ctx(ctx);
+       case LTTNG_UST_CONTEXT_NET_NS:
+               return lttng_add_net_ns_to_ctx(ctx);
+       case LTTNG_UST_CONTEXT_PID_NS:
+               return lttng_add_pid_ns_to_ctx(ctx);
+       case LTTNG_UST_CONTEXT_USER_NS:
+               return lttng_add_user_ns_to_ctx(ctx);
+       case LTTNG_UST_CONTEXT_UTS_NS:
+               return lttng_add_uts_ns_to_ctx(ctx);
+       case LTTNG_UST_CONTEXT_VUID:
+               return lttng_add_vuid_to_ctx(ctx);
+       case LTTNG_UST_CONTEXT_VEUID:
+               return lttng_add_veuid_to_ctx(ctx);
+       case LTTNG_UST_CONTEXT_VSUID:
+               return lttng_add_vsuid_to_ctx(ctx);
+       case LTTNG_UST_CONTEXT_VGID:
+               return lttng_add_vgid_to_ctx(ctx);
+       case LTTNG_UST_CONTEXT_VEGID:
+               return lttng_add_vegid_to_ctx(ctx);
+       case LTTNG_UST_CONTEXT_VSGID:
+               return lttng_add_vsgid_to_ctx(ctx);
        default:
                return -EINVAL;
        }