83 static inline bool pv_hybrid_queued_unfair_trylock(struct qspinlock *lock)  in pv_hybrid_queued_unfair_trylock()  argument
90 		int val = atomic_read(&lock->val);  in pv_hybrid_queued_unfair_trylock()
93 		   (cmpxchg_acquire(&lock->locked, 0, _Q_LOCKED_VAL) == 0)) {  in pv_hybrid_queued_unfair_trylock()
111 static __always_inline void set_pending(struct qspinlock *lock)  in set_pending()  argument
113 	WRITE_ONCE(lock->pending, 1);  in set_pending()
121 static __always_inline int trylock_clear_pending(struct qspinlock *lock)  in trylock_clear_pending()  argument
123 	return !READ_ONCE(lock->locked) &&  in trylock_clear_pending()
124 	       (cmpxchg_acquire(&lock->locked_pending, _Q_PENDING_VAL,  in trylock_clear_pending()
128 static __always_inline void set_pending(struct qspinlock *lock)  in set_pending()  argument
130 	atomic_or(_Q_PENDING_VAL, &lock->val);  in set_pending()
133 static __always_inline int trylock_clear_pending(struct qspinlock *lock)  in trylock_clear_pending()  argument
135 	int val = atomic_read(&lock->val);  in trylock_clear_pending()
148 		val = atomic_cmpxchg_acquire(&lock->val, old, new);  in trylock_clear_pending()
174 	struct qspinlock *lock;  member
214 static struct qspinlock **pv_hash(struct qspinlock *lock, struct pv_node *node)  in pv_hash()  argument
216 	unsigned long offset, hash = hash_ptr(lock, pv_lock_hash_bits);  in pv_hash()
222 		if (!cmpxchg(&he->lock, NULL, lock)) {  in pv_hash()
225 			return &he->lock;  in pv_hash()
241 static struct pv_node *pv_unhash(struct qspinlock *lock)  in pv_unhash()  argument
243 	unsigned long offset, hash = hash_ptr(lock, pv_lock_hash_bits);  in pv_unhash()
248 		if (READ_ONCE(he->lock) == lock) {  in pv_unhash()
250 			WRITE_ONCE(he->lock, NULL);  in pv_unhash()
361 static void pv_kick_node(struct qspinlock *lock, struct mcs_spinlock *node)  in pv_kick_node()  argument
392 	WRITE_ONCE(lock->locked, _Q_SLOW_VAL);  in pv_kick_node()
393 	(void)pv_hash(lock, pn);  in pv_kick_node()
404 pv_wait_head_or_lock(struct qspinlock *lock, struct mcs_spinlock *node)  in pv_wait_head_or_lock()  argument
434 		set_pending(lock);  in pv_wait_head_or_lock()
436 			if (trylock_clear_pending(lock))  in pv_wait_head_or_lock()
440 		clear_pending(lock);  in pv_wait_head_or_lock()
444 			lp = pv_hash(lock, pn);  in pv_wait_head_or_lock()
457 			if (xchg(&lock->locked, _Q_SLOW_VAL) == 0) {  in pv_wait_head_or_lock()
463 				WRITE_ONCE(lock->locked, _Q_LOCKED_VAL);  in pv_wait_head_or_lock()
471 		pv_wait(&lock->locked, _Q_SLOW_VAL);  in pv_wait_head_or_lock()
486 	return (u32)(atomic_read(&lock->val) | _Q_LOCKED_VAL);  in pv_wait_head_or_lock()
494 __pv_queued_spin_unlock_slowpath(struct qspinlock *lock, u8 locked)  in __pv_queued_spin_unlock_slowpath()  argument
501 		     (unsigned long)lock, atomic_read(&lock->val));  in __pv_queued_spin_unlock_slowpath()
518 	node = pv_unhash(lock);  in __pv_queued_spin_unlock_slowpath()
524 	smp_store_release(&lock->locked, 0);  in __pv_queued_spin_unlock_slowpath()
548 __visible void __pv_queued_spin_unlock(struct qspinlock *lock)  in __pv_queued_spin_unlock()  argument
557 	locked = cmpxchg_release(&lock->locked, _Q_LOCKED_VAL, 0);  in __pv_queued_spin_unlock()
561 	__pv_queued_spin_unlock_slowpath(lock, locked);  in __pv_queued_spin_unlock()