sd_event_add_defer  597 src/core/manager.c         r = sd_event_add_defer(m->event, &m->run_queue_event_source, manager_dispatch_run_queue, m);
sd_event_add_defer  390 src/journal-remote/journal-remote.c                 r = sd_event_add_defer(s->events, &source->event,
sd_event_add_defer   85 src/systemd/sd-event.h int sd_event_add_defer(sd_event *e, sd_event_source **s, sd_event_handler_t callback, void *userdata);