Implement UST PID tracker

[lttng-tools.git] / src / bin / lttng-sessiond / cmd.c

diff --git a/src/bin/lttng-sessiond/cmd.c b/src/bin/lttng-sessiond/cmd.c
index 546da2e53d69cc84280ec0b9ca0aec7556962b80..9ae5cff392d49ae67ea83eeb99acf1340bf19508 100644 (file)
--- a/src/bin/lttng-sessiond/cmd.c
+++ b/src/bin/lttng-sessiond/cmd.c
@@ -926,6 +926,8 @@ error:
 
 /*
  * Command LTTNG_TRACK_PID processed by the client thread.
+ *
+ * Called with session lock held.
  */
 int cmd_track_pid(struct ltt_session *session, int domain, int pid)
 {
@@ -949,6 +951,17 @@ int cmd_track_pid(struct ltt_session *session, int domain, int pid)
                break;
        }
        case LTTNG_DOMAIN_UST:
+       {
+               struct ltt_ust_session *usess;
+
+               usess = session->ust_session;
+
+               ret = trace_ust_track_pid(usess, pid);
+               if (ret != LTTNG_OK) {
+                       goto error;
+               }
+               break;
+       }
        default:
                ret = LTTNG_ERR_UNKNOWN_DOMAIN;
                goto error;
@@ -963,6 +976,8 @@ error:
 
 /*
  * Command LTTNG_UNTRACK_PID processed by the client thread.
+ *
+ * Called with session lock held.
  */
 int cmd_untrack_pid(struct ltt_session *session, int domain, int pid)
 {
@@ -986,6 +1001,17 @@ int cmd_untrack_pid(struct ltt_session *session, int domain, int pid)
                break;
        }
        case LTTNG_DOMAIN_UST:
+       {
+               struct ltt_ust_session *usess;
+
+               usess = session->ust_session;
+
+               ret = trace_ust_untrack_pid(usess, pid);
+               if (ret != LTTNG_OK) {
+                       goto error;
+               }
+               break;
+       }
        default:
                ret = LTTNG_ERR_UNKNOWN_DOMAIN;
                goto error;
@@ -1925,6 +1951,8 @@ ssize_t cmd_list_syscalls(struct lttng_event **events)
 
 /*
  * Command LTTNG_START_TRACE processed by the client thread.
+ *
+ * Called with session mutex held.
  */
 int cmd_start_trace(struct ltt_session *session)
 {
@@ -2285,6 +2313,8 @@ error:
 
 /*
  * Command LTTNG_DESTROY_SESSION processed by the client thread.
+ *
+ * Called with session lock held.
  */
 int cmd_destroy_session(struct ltt_session *session, int wpipe)
 {