cancel_timer
cancel_timer(&execlists->timer);
cancel_timer(&execlists->timer);
cancel_timer(&execlists->preempt);
cancel_timer(&el->timer);
cancel_timer(&engine->execlists.preempt);
cancel_timer(&engine->execlists.timer);
cancel_timer(&engine->execlists.preempt);
cancel_timer(t);
void cancel_timer(struct timeout *t);