10  * Memory thresholds
3983 		t = rcu_dereference(memcg->thresholds.primary);  in __mem_cgroup_threshold()
4000 	 * Iterate backward over array of thresholds starting from  in __mem_cgroup_threshold()
4002 	 * If none of thresholds below usage is crossed, we read  in __mem_cgroup_threshold()
4012 	 * Iterate forward over array of thresholds starting from  in __mem_cgroup_threshold()
4014 	 * If none of thresholds above usage is crossed, we read  in __mem_cgroup_threshold()
4075 	struct mem_cgroup_thresholds *thresholds;  in __mem_cgroup_usage_register_event()  local
4088 		thresholds = &memcg->thresholds;  in __mem_cgroup_usage_register_event()
4091 		thresholds = &memcg->memsw_thresholds;  in __mem_cgroup_usage_register_event()
4097 	if (thresholds->primary)  in __mem_cgroup_usage_register_event()
4100 	size = thresholds->primary ? thresholds->primary->size + 1 : 1;  in __mem_cgroup_usage_register_event()
4102 	/* Allocate memory for new array of thresholds */  in __mem_cgroup_usage_register_event()
4110 	/* Copy thresholds (if any) to new array */  in __mem_cgroup_usage_register_event()
4111 	if (thresholds->primary) {  in __mem_cgroup_usage_register_event()
4112 		memcpy(new->entries, thresholds->primary->entries, (size - 1) *  in __mem_cgroup_usage_register_event()
4120 	/* Sort thresholds. Registering of new threshold isn't time-critical */  in __mem_cgroup_usage_register_event()
4139 	kfree(thresholds->spare);  in __mem_cgroup_usage_register_event()
4140 	thresholds->spare = thresholds->primary;  in __mem_cgroup_usage_register_event()
4142 	rcu_assign_pointer(thresholds->primary, new);  in __mem_cgroup_usage_register_event()
4144 	/* To be sure that nobody uses thresholds */  in __mem_cgroup_usage_register_event()
4168 	struct mem_cgroup_thresholds *thresholds;  in __mem_cgroup_usage_unregister_event()  local
4176 		thresholds = &memcg->thresholds;  in __mem_cgroup_usage_unregister_event()
4179 		thresholds = &memcg->memsw_thresholds;  in __mem_cgroup_usage_unregister_event()
4184 	if (!thresholds->primary)  in __mem_cgroup_usage_unregister_event()
4192 	for (i = 0; i < thresholds->primary->size; i++) {  in __mem_cgroup_usage_unregister_event()
4193 		if (thresholds->primary->entries[i].eventfd != eventfd)  in __mem_cgroup_usage_unregister_event()
4197 	new = thresholds->spare;  in __mem_cgroup_usage_unregister_event()
4199 	/* Set thresholds array to NULL if we don't have thresholds */  in __mem_cgroup_usage_unregister_event()
4208 	/* Copy thresholds and find current threshold */  in __mem_cgroup_usage_unregister_event()
4210 	for (i = 0, j = 0; i < thresholds->primary->size; i++) {  in __mem_cgroup_usage_unregister_event()
4211 		if (thresholds->primary->entries[i].eventfd == eventfd)  in __mem_cgroup_usage_unregister_event()
4214 		new->entries[j] = thresholds->primary->entries[i];  in __mem_cgroup_usage_unregister_event()
4228 	thresholds->spare = thresholds->primary;  in __mem_cgroup_usage_unregister_event()
4230 	rcu_assign_pointer(thresholds->primary, new);  in __mem_cgroup_usage_unregister_event()
4232 	/* To be sure that nobody uses thresholds */  in __mem_cgroup_usage_unregister_event()
4237 		kfree(thresholds->spare);  in __mem_cgroup_usage_unregister_event()
4238 		thresholds->spare = NULL;  in __mem_cgroup_usage_unregister_event()