148 	struct reclaim_iter	iter[DEF_PRIORITY + 1];  member
1013 	struct reclaim_iter *uninitialized_var(iter);  in mem_cgroup_iter()
1039 		iter = &mz->iter[reclaim->priority];  in mem_cgroup_iter()
1041 		if (prev && reclaim->generation != iter->generation)  in mem_cgroup_iter()
1045 			pos = READ_ONCE(iter->position);  in mem_cgroup_iter()
1097 		if (cmpxchg(&iter->position, pos, memcg) == pos) {  in mem_cgroup_iter()
1112 			iter->generation++;  in mem_cgroup_iter()
1114 			reclaim->generation = iter->generation;  in mem_cgroup_iter()
1145 #define for_each_mem_cgroup_tree(iter, root)		\  argument
1146 	for (iter = mem_cgroup_iter(root, NULL, NULL);	\
1147 	     iter != NULL;				\
1148 	     iter = mem_cgroup_iter(root, iter, NULL))
1150 #define for_each_mem_cgroup(iter)			\  argument
1151 	for (iter = mem_cgroup_iter(NULL, NULL, NULL);	\
1152 	     iter != NULL;				\
1153 	     iter = mem_cgroup_iter(NULL, iter, NULL))
1443 	struct mem_cgroup *iter;  in mem_cgroup_print_oom_info()  local
1472 	for_each_mem_cgroup_tree(iter, memcg) {  in mem_cgroup_print_oom_info()
1474 		pr_cont_cgroup_path(iter->css.cgroup);  in mem_cgroup_print_oom_info()
1481 				K(mem_cgroup_read_stat(iter, i)));  in mem_cgroup_print_oom_info()
1486 				K(mem_cgroup_nr_lru_pages(iter, BIT(i))));  in mem_cgroup_print_oom_info()
1500 	struct mem_cgroup *iter;  in mem_cgroup_count_children()  local
1502 	for_each_mem_cgroup_tree(iter, memcg)  in mem_cgroup_count_children()
1527 	struct mem_cgroup *iter;  in mem_cgroup_out_of_memory()  local
1545 	for_each_mem_cgroup_tree(iter, memcg) {  in mem_cgroup_out_of_memory()
1549 		css_task_iter_start(&iter->css, &it);  in mem_cgroup_out_of_memory()
1564 				mem_cgroup_iter_break(memcg, iter);  in mem_cgroup_out_of_memory()
1757 	struct mem_cgroup *iter, *failed = NULL;  in mem_cgroup_oom_trylock()  local
1761 	for_each_mem_cgroup_tree(iter, memcg) {  in mem_cgroup_oom_trylock()
1762 		if (iter->oom_lock) {  in mem_cgroup_oom_trylock()
1767 			failed = iter;  in mem_cgroup_oom_trylock()
1768 			mem_cgroup_iter_break(memcg, iter);  in mem_cgroup_oom_trylock()
1771 			iter->oom_lock = true;  in mem_cgroup_oom_trylock()
1779 		for_each_mem_cgroup_tree(iter, memcg) {  in mem_cgroup_oom_trylock()
1780 			if (iter == failed) {  in mem_cgroup_oom_trylock()
1781 				mem_cgroup_iter_break(memcg, iter);  in mem_cgroup_oom_trylock()
1784 			iter->oom_lock = false;  in mem_cgroup_oom_trylock()
1796 	struct mem_cgroup *iter;  in mem_cgroup_oom_unlock()  local
1800 	for_each_mem_cgroup_tree(iter, memcg)  in mem_cgroup_oom_unlock()
1801 		iter->oom_lock = false;  in mem_cgroup_oom_unlock()
1807 	struct mem_cgroup *iter;  in mem_cgroup_mark_under_oom()  local
1809 	for_each_mem_cgroup_tree(iter, memcg)  in mem_cgroup_mark_under_oom()
1810 		atomic_inc(&iter->under_oom);  in mem_cgroup_mark_under_oom()
1815 	struct mem_cgroup *iter;  in mem_cgroup_unmark_under_oom()  local
1822 	for_each_mem_cgroup_tree(iter, memcg)  in mem_cgroup_unmark_under_oom()
1823 		atomic_add_unless(&iter->under_oom, -1, 0);  in mem_cgroup_unmark_under_oom()
2202 	struct mem_cgroup *iter;  in memcg_cpu_hotplug_callback()  local
2210 	for_each_mem_cgroup(iter)  in memcg_cpu_hotplug_callback()
2211 		mem_cgroup_drain_pcp_counter(iter, cpu);  in memcg_cpu_hotplug_callback()
3117 	struct mem_cgroup *iter;  in tree_stat()  local
3121 	for_each_mem_cgroup_tree(iter, memcg)  in tree_stat()
3122 		val += mem_cgroup_read_stat(iter, idx);  in tree_stat()
3432 		struct mem_cgroup *iter;  in memcg_numa_stat_show()  local
3435 		for_each_mem_cgroup_tree(iter, memcg)  in memcg_numa_stat_show()
3436 			nr += mem_cgroup_nr_lru_pages(iter, stat->lru_mask);  in memcg_numa_stat_show()
3440 			for_each_mem_cgroup_tree(iter, memcg)  in memcg_numa_stat_show()
3442 					iter, nid, stat->lru_mask);  in memcg_numa_stat_show()
3662 	struct mem_cgroup *iter;  in mem_cgroup_oom_notify()  local
3664 	for_each_mem_cgroup_tree(iter, memcg)  in mem_cgroup_oom_notify()
3665 		mem_cgroup_oom_notify_cb(iter);  in mem_cgroup_oom_notify()