129 	struct active_node *it, *n;  in __active_retire()  local
170 	rbtree_postorder_for_each_entry_safe(it, n, &root, node) {  in __active_retire()
171 		GEM_BUG_ON(i915_active_fence_isset(&it->base));  in __active_retire()
172 		kmem_cache_free(slab_cache, it);  in __active_retire()
234 	struct active_node *it;  in __active_lookup()  local
245 	it = READ_ONCE(ref->cache);  in __active_lookup()
246 	if (it) {  in __active_lookup()
247 		u64 cached = READ_ONCE(it->timeline);  in __active_lookup()
251 			return it;  in __active_lookup()
263 		if (!cached && !cmpxchg64(&it->timeline, 0, idx))  in __active_lookup()
264 			return it;  in __active_lookup()
267 	BUILD_BUG_ON(offsetof(typeof(*it), node));  in __active_lookup()
272 	it = fetch_node(ref->tree.rb_node);  in __active_lookup()
273 	while (it) {  in __active_lookup()
274 		if (it->timeline < idx) {  in __active_lookup()
275 			it = fetch_node(it->node.rb_right);  in __active_lookup()
276 		} else if (it->timeline > idx) {  in __active_lookup()
277 			it = fetch_node(it->node.rb_left);  in __active_lookup()
279 			WRITE_ONCE(ref->cache, it);  in __active_lookup()
285 	return it;  in __active_lookup()
569 static int flush_barrier(struct active_node *it)  in flush_barrier()  argument
573 	if (likely(!is_barrier(&it->base)))  in flush_barrier()
576 	engine = __barrier_to_engine(it);  in flush_barrier()
578 	if (!is_barrier(&it->base))  in flush_barrier()
586 	struct active_node *it, *n;  in flush_lazy_signals()  local
590 	rbtree_postorder_for_each_entry_safe(it, n, &ref->tree, node) {  in flush_lazy_signals()
591 		err = flush_barrier(it); /* unconnected idle barrier? */  in flush_lazy_signals()
595 		enable_signaling(&it->base);  in flush_lazy_signals()
709 		struct active_node *it, *n;  in await_active()  local
711 		rbtree_postorder_for_each_entry_safe(it, n, &ref->tree, node) {  in await_active()
712 			err = __await_active(&it->base, fn, arg);  in await_active()
962 			struct active_node *it;  in i915_active_acquire_barrier()  local
966 			it = rb_entry(parent, struct active_node, node);  in i915_active_acquire_barrier()
967 			if (it->timeline < node->timeline)  in i915_active_acquire_barrier()