102 	struct percpu_ref	*ref;  member
121 int __must_check percpu_ref_init(struct percpu_ref *ref,
124 void percpu_ref_exit(struct percpu_ref *ref);
125 void percpu_ref_switch_to_atomic(struct percpu_ref *ref,
127 void percpu_ref_switch_to_atomic_sync(struct percpu_ref *ref);
128 void percpu_ref_switch_to_percpu(struct percpu_ref *ref);
129 void percpu_ref_kill_and_confirm(struct percpu_ref *ref,
131 void percpu_ref_resurrect(struct percpu_ref *ref);
132 void percpu_ref_reinit(struct percpu_ref *ref);
133 bool percpu_ref_is_zero(struct percpu_ref *ref);
147 static inline void percpu_ref_kill(struct percpu_ref *ref)  in percpu_ref_kill()  argument
149 	percpu_ref_kill_and_confirm(ref, NULL);  in percpu_ref_kill()
158 static inline bool __ref_is_percpu(struct percpu_ref *ref,  in __ref_is_percpu()  argument
174 	percpu_ptr = READ_ONCE(ref->percpu_count_ptr);  in __ref_is_percpu()
198 static inline void percpu_ref_get_many(struct percpu_ref *ref, unsigned long nr)  in percpu_ref_get_many()  argument
204 	if (__ref_is_percpu(ref, &percpu_count))  in percpu_ref_get_many()
207 		atomic_long_add(nr, &ref->data->count);  in percpu_ref_get_many()
220 static inline void percpu_ref_get(struct percpu_ref *ref)  in percpu_ref_get()  argument
222 	percpu_ref_get_many(ref, 1);  in percpu_ref_get()
235 static inline bool percpu_ref_tryget_many(struct percpu_ref *ref,  in percpu_ref_tryget_many()  argument
243 	if (__ref_is_percpu(ref, &percpu_count)) {  in percpu_ref_tryget_many()
247 		ret = atomic_long_add_unless(&ref->data->count, nr, 0);  in percpu_ref_tryget_many()
264 static inline bool percpu_ref_tryget(struct percpu_ref *ref)  in percpu_ref_tryget()  argument
266 	return percpu_ref_tryget_many(ref, 1);  in percpu_ref_tryget()
275 static inline bool percpu_ref_tryget_live_rcu(struct percpu_ref *ref)  in percpu_ref_tryget_live_rcu()  argument
282 	if (likely(__ref_is_percpu(ref, &percpu_count))) {  in percpu_ref_tryget_live_rcu()
285 	} else if (!(ref->percpu_count_ptr & __PERCPU_REF_DEAD)) {  in percpu_ref_tryget_live_rcu()
286 		ret = atomic_long_inc_not_zero(&ref->data->count);  in percpu_ref_tryget_live_rcu()
306 static inline bool percpu_ref_tryget_live(struct percpu_ref *ref)  in percpu_ref_tryget_live()  argument
311 	ret = percpu_ref_tryget_live_rcu(ref);  in percpu_ref_tryget_live()
326 static inline void percpu_ref_put_many(struct percpu_ref *ref, unsigned long nr)  in percpu_ref_put_many()  argument
332 	if (__ref_is_percpu(ref, &percpu_count))  in percpu_ref_put_many()
334 	else if (unlikely(atomic_long_sub_and_test(nr, &ref->data->count)))  in percpu_ref_put_many()
335 		ref->data->release(ref);  in percpu_ref_put_many()
349 static inline void percpu_ref_put(struct percpu_ref *ref)  in percpu_ref_put()  argument
351 	percpu_ref_put_many(ref, 1);  in percpu_ref_put()
363 static inline bool percpu_ref_is_dying(struct percpu_ref *ref)  in percpu_ref_is_dying()  argument
365 	return ref->percpu_count_ptr & __PERCPU_REF_DEAD;  in percpu_ref_is_dying()