81 static inline bool pv_hybrid_queued_unfair_trylock(struct qspinlock *lock)  in pv_hybrid_queued_unfair_trylock()  argument
88 		int val = atomic_read(&lock->val);  in pv_hybrid_queued_unfair_trylock()
91 		   (cmpxchg_acquire(&lock->locked, 0, _Q_LOCKED_VAL) == 0)) {  in pv_hybrid_queued_unfair_trylock()
109 static __always_inline void set_pending(struct qspinlock *lock)  in set_pending()  argument
111 	WRITE_ONCE(lock->pending, 1);  in set_pending()
119 static __always_inline int trylock_clear_pending(struct qspinlock *lock)  in trylock_clear_pending()  argument
121 	return !READ_ONCE(lock->locked) &&  in trylock_clear_pending()
122 	       (cmpxchg_acquire(&lock->locked_pending, _Q_PENDING_VAL,  in trylock_clear_pending()
126 static __always_inline void set_pending(struct qspinlock *lock)  in set_pending()  argument
128 	atomic_or(_Q_PENDING_VAL, &lock->val);  in set_pending()
131 static __always_inline int trylock_clear_pending(struct qspinlock *lock)  in trylock_clear_pending()  argument
133 	int val = atomic_read(&lock->val);  in trylock_clear_pending()
146 		val = atomic_cmpxchg_acquire(&lock->val, old, new);  in trylock_clear_pending()
172 	struct qspinlock *lock;  member
212 static struct qspinlock **pv_hash(struct qspinlock *lock, struct pv_node *node)  in pv_hash()  argument
214 	unsigned long offset, hash = hash_ptr(lock, pv_lock_hash_bits);  in pv_hash()
220 		if (!cmpxchg(&he->lock, NULL, lock)) {  in pv_hash()
223 			return &he->lock;  in pv_hash()
239 static struct pv_node *pv_unhash(struct qspinlock *lock)  in pv_unhash()  argument
241 	unsigned long offset, hash = hash_ptr(lock, pv_lock_hash_bits);  in pv_unhash()
246 		if (READ_ONCE(he->lock) == lock) {  in pv_unhash()
248 			WRITE_ONCE(he->lock, NULL);  in pv_unhash()
360 static void pv_kick_node(struct qspinlock *lock, struct mcs_spinlock *node)  in pv_kick_node()  argument
391 	WRITE_ONCE(lock->locked, _Q_SLOW_VAL);  in pv_kick_node()
392 	(void)pv_hash(lock, pn);  in pv_kick_node()
403 pv_wait_head_or_lock(struct qspinlock *lock, struct mcs_spinlock *node)  in pv_wait_head_or_lock()  argument
433 		set_pending(lock);  in pv_wait_head_or_lock()
435 			if (trylock_clear_pending(lock))  in pv_wait_head_or_lock()
439 		clear_pending(lock);  in pv_wait_head_or_lock()
443 			lp = pv_hash(lock, pn);  in pv_wait_head_or_lock()
456 			if (xchg(&lock->locked, _Q_SLOW_VAL) == 0) {  in pv_wait_head_or_lock()
462 				WRITE_ONCE(lock->locked, _Q_LOCKED_VAL);  in pv_wait_head_or_lock()
470 		pv_wait(&lock->locked, _Q_SLOW_VAL);  in pv_wait_head_or_lock()
485 	return (u32)(atomic_read(&lock->val) | _Q_LOCKED_VAL);  in pv_wait_head_or_lock()
493 __pv_queued_spin_unlock_slowpath(struct qspinlock *lock, u8 locked)  in __pv_queued_spin_unlock_slowpath()  argument
500 		     (unsigned long)lock, atomic_read(&lock->val));  in __pv_queued_spin_unlock_slowpath()
517 	node = pv_unhash(lock);  in __pv_queued_spin_unlock_slowpath()
523 	smp_store_release(&lock->locked, 0);  in __pv_queued_spin_unlock_slowpath()
547 __visible __lockfunc void __pv_queued_spin_unlock(struct qspinlock *lock)  in __pv_queued_spin_unlock()  argument
556 	locked = cmpxchg_release(&lock->locked, _Q_LOCKED_VAL, 0);  in __pv_queued_spin_unlock()
560 	__pv_queued_spin_unlock_slowpath(lock, locked);  in __pv_queued_spin_unlock()