return lttng_session_untrack_pid(session, (int) arg);
case LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS:
return lttng_session_list_tracker_pids(session);
return lttng_session_untrack_pid(session, (int) arg);
case LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS:
return lttng_session_list_tracker_pids(session);