25 static inline int node_cpu(struct optimistic_spin_node *node)  in node_cpu()  argument
27 	return node->cpu - 1;  in node_cpu()
43 	      struct optimistic_spin_node *node,  in osq_wait_next()  argument
78 		if (node->next) {  in osq_wait_next()
79 			next = xchg(&node->next, NULL);  in osq_wait_next()
92 	struct optimistic_spin_node *node = this_cpu_ptr(&osq_node);  in osq_lock()  local
97 	node->locked = 0;  in osq_lock()
98 	node->next = NULL;  in osq_lock()
99 	node->cpu = curr;  in osq_lock()
112 	node->prev = prev;  in osq_lock()
126 	WRITE_ONCE(prev->next, node);  in osq_lock()
143 	if (smp_cond_load_relaxed(&node->locked, VAL || need_resched() ||  in osq_lock()
144 				  vcpu_is_preempted(node_cpu(node->prev))))  in osq_lock()
161 		if (data_race(prev->next) == node &&  in osq_lock()
162 		    cmpxchg(&prev->next, node, NULL) == node)  in osq_lock()
170 		if (smp_load_acquire(&node->locked))  in osq_lock()
179 		prev = READ_ONCE(node->prev);  in osq_lock()
189 	next = osq_wait_next(lock, node, prev);  in osq_lock()
209 	struct optimistic_spin_node *node, *next;  in osq_unlock()  local
222 	node = this_cpu_ptr(&osq_node);  in osq_unlock()
223 	next = xchg(&node->next, NULL);  in osq_unlock()
229 	next = osq_wait_next(lock, node, NULL);  in osq_unlock()