136  *	@nh: Pointer to head of the atomic notifier chain
143 int atomic_notifier_chain_register(struct atomic_notifier_head *nh,  in atomic_notifier_chain_register()  argument
149 	spin_lock_irqsave(&nh->lock, flags);  in atomic_notifier_chain_register()
150 	ret = notifier_chain_register(&nh->head, n, false);  in atomic_notifier_chain_register()
151 	spin_unlock_irqrestore(&nh->lock, flags);  in atomic_notifier_chain_register()
158  *	@nh: Pointer to head of the atomic notifier chain
166 int atomic_notifier_chain_register_unique_prio(struct atomic_notifier_head *nh,  in atomic_notifier_chain_register_unique_prio()  argument
172 	spin_lock_irqsave(&nh->lock, flags);  in atomic_notifier_chain_register_unique_prio()
173 	ret = notifier_chain_register(&nh->head, n, true);  in atomic_notifier_chain_register_unique_prio()
174 	spin_unlock_irqrestore(&nh->lock, flags);  in atomic_notifier_chain_register_unique_prio()
181  *	@nh: Pointer to head of the atomic notifier chain
188 int atomic_notifier_chain_unregister(struct atomic_notifier_head *nh,  in atomic_notifier_chain_unregister()  argument
194 	spin_lock_irqsave(&nh->lock, flags);  in atomic_notifier_chain_unregister()
195 	ret = notifier_chain_unregister(&nh->head, n);  in atomic_notifier_chain_unregister()
196 	spin_unlock_irqrestore(&nh->lock, flags);  in atomic_notifier_chain_unregister()
204  *	@nh: Pointer to head of the atomic notifier chain
219 int atomic_notifier_call_chain(struct atomic_notifier_head *nh,  in atomic_notifier_call_chain()  argument
225 	ret = notifier_call_chain(&nh->head, val, v, -1, NULL);  in atomic_notifier_call_chain()
235  *	@nh: Pointer to head of the atomic notifier chain
241 bool atomic_notifier_call_chain_is_empty(struct atomic_notifier_head *nh)  in atomic_notifier_call_chain_is_empty()  argument
243 	return !rcu_access_pointer(nh->head);  in atomic_notifier_call_chain_is_empty()
251 static int __blocking_notifier_chain_register(struct blocking_notifier_head *nh,  in __blocking_notifier_chain_register()  argument
263 		return notifier_chain_register(&nh->head, n, unique_priority);  in __blocking_notifier_chain_register()
265 	down_write(&nh->rwsem);  in __blocking_notifier_chain_register()
266 	ret = notifier_chain_register(&nh->head, n, unique_priority);  in __blocking_notifier_chain_register()
267 	up_write(&nh->rwsem);  in __blocking_notifier_chain_register()
273  *	@nh: Pointer to head of the blocking notifier chain
281 int blocking_notifier_chain_register(struct blocking_notifier_head *nh,  in blocking_notifier_chain_register()  argument
284 	return __blocking_notifier_chain_register(nh, n, false);  in blocking_notifier_chain_register()
290  *	@nh: Pointer to head of the blocking notifier chain
298 int blocking_notifier_chain_register_unique_prio(struct blocking_notifier_head *nh,  in blocking_notifier_chain_register_unique_prio()  argument
301 	return __blocking_notifier_chain_register(nh, n, true);  in blocking_notifier_chain_register_unique_prio()
307  *	@nh: Pointer to head of the blocking notifier chain
315 int blocking_notifier_chain_unregister(struct blocking_notifier_head *nh,  in blocking_notifier_chain_unregister()  argument
326 		return notifier_chain_unregister(&nh->head, n);  in blocking_notifier_chain_unregister()
328 	down_write(&nh->rwsem);  in blocking_notifier_chain_unregister()
329 	ret = notifier_chain_unregister(&nh->head, n);  in blocking_notifier_chain_unregister()
330 	up_write(&nh->rwsem);  in blocking_notifier_chain_unregister()
335 int blocking_notifier_call_chain_robust(struct blocking_notifier_head *nh,  in blocking_notifier_call_chain_robust()  argument
345 	if (rcu_access_pointer(nh->head)) {  in blocking_notifier_call_chain_robust()
346 		down_read(&nh->rwsem);  in blocking_notifier_call_chain_robust()
347 		ret = notifier_call_chain_robust(&nh->head, val_up, val_down, v);  in blocking_notifier_call_chain_robust()
348 		up_read(&nh->rwsem);  in blocking_notifier_call_chain_robust()
356  *	@nh: Pointer to head of the blocking notifier chain
370 int blocking_notifier_call_chain(struct blocking_notifier_head *nh,  in blocking_notifier_call_chain()  argument
380 	if (rcu_access_pointer(nh->head)) {  in blocking_notifier_call_chain()
381 		down_read(&nh->rwsem);  in blocking_notifier_call_chain()
382 		ret = notifier_call_chain(&nh->head, val, v, -1, NULL);  in blocking_notifier_call_chain()
383 		up_read(&nh->rwsem);  in blocking_notifier_call_chain()
396  *	@nh: Pointer to head of the raw notifier chain
404 int raw_notifier_chain_register(struct raw_notifier_head *nh,  in raw_notifier_chain_register()  argument
407 	return notifier_chain_register(&nh->head, n, false);  in raw_notifier_chain_register()
413  *	@nh: Pointer to head of the raw notifier chain
421 int raw_notifier_chain_unregister(struct raw_notifier_head *nh,  in raw_notifier_chain_unregister()  argument
424 	return notifier_chain_unregister(&nh->head, n);  in raw_notifier_chain_unregister()
428 int raw_notifier_call_chain_robust(struct raw_notifier_head *nh,  in raw_notifier_call_chain_robust()  argument
431 	return notifier_call_chain_robust(&nh->head, val_up, val_down, v);  in raw_notifier_call_chain_robust()
437  *	@nh: Pointer to head of the raw notifier chain
452 int raw_notifier_call_chain(struct raw_notifier_head *nh,  in raw_notifier_call_chain()  argument
455 	return notifier_call_chain(&nh->head, val, v, -1, NULL);  in raw_notifier_call_chain()
467  *	@nh: Pointer to head of the SRCU notifier chain
475 int srcu_notifier_chain_register(struct srcu_notifier_head *nh,  in srcu_notifier_chain_register()  argument
486 		return notifier_chain_register(&nh->head, n, false);  in srcu_notifier_chain_register()
488 	mutex_lock(&nh->mutex);  in srcu_notifier_chain_register()
489 	ret = notifier_chain_register(&nh->head, n, false);  in srcu_notifier_chain_register()
490 	mutex_unlock(&nh->mutex);  in srcu_notifier_chain_register()
497  *	@nh: Pointer to head of the SRCU notifier chain
505 int srcu_notifier_chain_unregister(struct srcu_notifier_head *nh,  in srcu_notifier_chain_unregister()  argument
516 		return notifier_chain_unregister(&nh->head, n);  in srcu_notifier_chain_unregister()
518 	mutex_lock(&nh->mutex);  in srcu_notifier_chain_unregister()
519 	ret = notifier_chain_unregister(&nh->head, n);  in srcu_notifier_chain_unregister()
520 	mutex_unlock(&nh->mutex);  in srcu_notifier_chain_unregister()
521 	synchronize_srcu(&nh->srcu);  in srcu_notifier_chain_unregister()
528  *	@nh: Pointer to head of the SRCU notifier chain
542 int srcu_notifier_call_chain(struct srcu_notifier_head *nh,  in srcu_notifier_call_chain()  argument
548 	idx = srcu_read_lock(&nh->srcu);  in srcu_notifier_call_chain()
549 	ret = notifier_call_chain(&nh->head, val, v, -1, NULL);  in srcu_notifier_call_chain()
550 	srcu_read_unlock(&nh->srcu, idx);  in srcu_notifier_call_chain()
557  *	@nh: Pointer to head of the srcu notifier chain
567 void srcu_init_notifier_head(struct srcu_notifier_head *nh)  in srcu_init_notifier_head()  argument
569 	mutex_init(&nh->mutex);  in srcu_init_notifier_head()
570 	if (init_srcu_struct(&nh->srcu) < 0)  in srcu_init_notifier_head()
572 	nh->head = NULL;  in srcu_init_notifier_head()