POSIX_TIMER_REQUEUE_PENDING
tmr->it_sig_periodic = tmr->it_status == POSIX_TIMER_REQUEUE_PENDING;
if (!timr->it_interval || WARN_ON_ONCE(timr->it_status != POSIX_TIMER_REQUEUE_PENDING))
timr->it_status = timr->it_interval ? POSIX_TIMER_REQUEUE_PENDING : POSIX_TIMER_DISARMED;