ENQUEUE_NOCLOCK
if (!(flags & ENQUEUE_NOCLOCK))
int en_flags = ENQUEUE_WAKEUP | ENQUEUE_NOCLOCK;
enqueue_task(rq, p, ENQUEUE_NOCLOCK | ENQUEUE_DELAYED);
activate_task(rq, p, ENQUEUE_NOCLOCK | ENQUEUE_INITIAL);
activate_task(rq, p, ENQUEUE_NOCLOCK);