lockdep_pin_lock
cookie = lockdep_pin_lock(&rtas_lock);
cookie = lockdep_pin_lock(&rtas_lock);
rq->cookie = lockdep_pin_lock(&ce->timeline->mutex);
to->cookie = lockdep_pin_lock(&to->context->timeline->mutex);
rq->cookie = lockdep_pin_lock(&tl->mutex);
rf.cookie = lockdep_pin_lock(__rq_lockp(rq));
rf->cookie = lockdep_pin_lock(__rq_lockp(rq));