EFD_CLOEXEC      2785 opal/mca/event/libevent2022/libevent/event.c #ifndef EFD_CLOEXEC
EFD_CLOEXEC      2788 opal/mca/event/libevent2022/libevent/event.c 	base->th_notify_fd[0] = eventfd(0, EFD_CLOEXEC);