134  *	@nh: Pointer to head of the atomic notifier chain
141 int atomic_notifier_chain_register(struct atomic_notifier_head *nh,  in atomic_notifier_chain_register()  argument
147 	spin_lock_irqsave(&nh->lock, flags);  in atomic_notifier_chain_register()
148 	ret = notifier_chain_register(&nh->head, n, false);  in atomic_notifier_chain_register()
149 	spin_unlock_irqrestore(&nh->lock, flags);  in atomic_notifier_chain_register()
156  *	@nh: Pointer to head of the atomic notifier chain
164 int atomic_notifier_chain_register_unique_prio(struct atomic_notifier_head *nh,  in atomic_notifier_chain_register_unique_prio()  argument
170 	spin_lock_irqsave(&nh->lock, flags);  in atomic_notifier_chain_register_unique_prio()
171 	ret = notifier_chain_register(&nh->head, n, true);  in atomic_notifier_chain_register_unique_prio()
172 	spin_unlock_irqrestore(&nh->lock, flags);  in atomic_notifier_chain_register_unique_prio()
179  *	@nh: Pointer to head of the atomic notifier chain
186 int atomic_notifier_chain_unregister(struct atomic_notifier_head *nh,  in atomic_notifier_chain_unregister()  argument
192 	spin_lock_irqsave(&nh->lock, flags);  in atomic_notifier_chain_unregister()
193 	ret = notifier_chain_unregister(&nh->head, n);  in atomic_notifier_chain_unregister()
194 	spin_unlock_irqrestore(&nh->lock, flags);  in atomic_notifier_chain_unregister()
202  *	@nh: Pointer to head of the atomic notifier chain
217 int atomic_notifier_call_chain(struct atomic_notifier_head *nh,  in atomic_notifier_call_chain()  argument
223 	ret = notifier_call_chain(&nh->head, val, v, -1, NULL);  in atomic_notifier_call_chain()
233  *	@nh: Pointer to head of the atomic notifier chain
239 bool atomic_notifier_call_chain_is_empty(struct atomic_notifier_head *nh)  in atomic_notifier_call_chain_is_empty()  argument
241 	return !rcu_access_pointer(nh->head);  in atomic_notifier_call_chain_is_empty()
249 static int __blocking_notifier_chain_register(struct blocking_notifier_head *nh,  in __blocking_notifier_chain_register()  argument
261 		return notifier_chain_register(&nh->head, n, unique_priority);  in __blocking_notifier_chain_register()
263 	down_write(&nh->rwsem);  in __blocking_notifier_chain_register()
264 	ret = notifier_chain_register(&nh->head, n, unique_priority);  in __blocking_notifier_chain_register()
265 	up_write(&nh->rwsem);  in __blocking_notifier_chain_register()
271  *	@nh: Pointer to head of the blocking notifier chain
279 int blocking_notifier_chain_register(struct blocking_notifier_head *nh,  in blocking_notifier_chain_register()  argument
282 	return __blocking_notifier_chain_register(nh, n, false);  in blocking_notifier_chain_register()
288  *	@nh: Pointer to head of the blocking notifier chain
296 int blocking_notifier_chain_register_unique_prio(struct blocking_notifier_head *nh,  in blocking_notifier_chain_register_unique_prio()  argument
299 	return __blocking_notifier_chain_register(nh, n, true);  in blocking_notifier_chain_register_unique_prio()
305  *	@nh: Pointer to head of the blocking notifier chain
313 int blocking_notifier_chain_unregister(struct blocking_notifier_head *nh,  in blocking_notifier_chain_unregister()  argument
324 		return notifier_chain_unregister(&nh->head, n);  in blocking_notifier_chain_unregister()
326 	down_write(&nh->rwsem);  in blocking_notifier_chain_unregister()
327 	ret = notifier_chain_unregister(&nh->head, n);  in blocking_notifier_chain_unregister()
328 	up_write(&nh->rwsem);  in blocking_notifier_chain_unregister()
333 int blocking_notifier_call_chain_robust(struct blocking_notifier_head *nh,  in blocking_notifier_call_chain_robust()  argument
343 	if (rcu_access_pointer(nh->head)) {  in blocking_notifier_call_chain_robust()
344 		down_read(&nh->rwsem);  in blocking_notifier_call_chain_robust()
345 		ret = notifier_call_chain_robust(&nh->head, val_up, val_down, v);  in blocking_notifier_call_chain_robust()
346 		up_read(&nh->rwsem);  in blocking_notifier_call_chain_robust()
354  *	@nh: Pointer to head of the blocking notifier chain
368 int blocking_notifier_call_chain(struct blocking_notifier_head *nh,  in blocking_notifier_call_chain()  argument
378 	if (rcu_access_pointer(nh->head)) {  in blocking_notifier_call_chain()
379 		down_read(&nh->rwsem);  in blocking_notifier_call_chain()
380 		ret = notifier_call_chain(&nh->head, val, v, -1, NULL);  in blocking_notifier_call_chain()
381 		up_read(&nh->rwsem);  in blocking_notifier_call_chain()
394  *	@nh: Pointer to head of the raw notifier chain
402 int raw_notifier_chain_register(struct raw_notifier_head *nh,  in raw_notifier_chain_register()  argument
405 	return notifier_chain_register(&nh->head, n, false);  in raw_notifier_chain_register()
411  *	@nh: Pointer to head of the raw notifier chain
419 int raw_notifier_chain_unregister(struct raw_notifier_head *nh,  in raw_notifier_chain_unregister()  argument
422 	return notifier_chain_unregister(&nh->head, n);  in raw_notifier_chain_unregister()
426 int raw_notifier_call_chain_robust(struct raw_notifier_head *nh,  in raw_notifier_call_chain_robust()  argument
429 	return notifier_call_chain_robust(&nh->head, val_up, val_down, v);  in raw_notifier_call_chain_robust()
435  *	@nh: Pointer to head of the raw notifier chain
450 int raw_notifier_call_chain(struct raw_notifier_head *nh,  in raw_notifier_call_chain()  argument
453 	return notifier_call_chain(&nh->head, val, v, -1, NULL);  in raw_notifier_call_chain()
464  *	@nh: Pointer to head of the SRCU notifier chain
472 int srcu_notifier_chain_register(struct srcu_notifier_head *nh,  in srcu_notifier_chain_register()  argument
483 		return notifier_chain_register(&nh->head, n, false);  in srcu_notifier_chain_register()
485 	mutex_lock(&nh->mutex);  in srcu_notifier_chain_register()
486 	ret = notifier_chain_register(&nh->head, n, false);  in srcu_notifier_chain_register()
487 	mutex_unlock(&nh->mutex);  in srcu_notifier_chain_register()
494  *	@nh: Pointer to head of the SRCU notifier chain
502 int srcu_notifier_chain_unregister(struct srcu_notifier_head *nh,  in srcu_notifier_chain_unregister()  argument
513 		return notifier_chain_unregister(&nh->head, n);  in srcu_notifier_chain_unregister()
515 	mutex_lock(&nh->mutex);  in srcu_notifier_chain_unregister()
516 	ret = notifier_chain_unregister(&nh->head, n);  in srcu_notifier_chain_unregister()
517 	mutex_unlock(&nh->mutex);  in srcu_notifier_chain_unregister()
518 	synchronize_srcu(&nh->srcu);  in srcu_notifier_chain_unregister()
525  *	@nh: Pointer to head of the SRCU notifier chain
539 int srcu_notifier_call_chain(struct srcu_notifier_head *nh,  in srcu_notifier_call_chain()  argument
545 	idx = srcu_read_lock(&nh->srcu);  in srcu_notifier_call_chain()
546 	ret = notifier_call_chain(&nh->head, val, v, -1, NULL);  in srcu_notifier_call_chain()
547 	srcu_read_unlock(&nh->srcu, idx);  in srcu_notifier_call_chain()
554  *	@nh: Pointer to head of the srcu notifier chain
564 void srcu_init_notifier_head(struct srcu_notifier_head *nh)  in srcu_init_notifier_head()  argument
566 	mutex_init(&nh->mutex);  in srcu_init_notifier_head()
567 	if (init_srcu_struct(&nh->srcu) < 0)  in srcu_init_notifier_head()
569 	nh->head = NULL;  in srcu_init_notifier_head()