231 	return css_cs(cs->css.parent);  in parent_cs()
1257 				      struct cpuset *cs, struct cpuset *parent)  in compute_effective_cpumask()  argument
1259 	if (parent->nr_subparts_cpus && is_partition_valid(cs)) {  in compute_effective_cpumask()
1260 		cpumask_or(new_cpus, parent->effective_cpus,  in compute_effective_cpumask()
1261 			   parent->subparts_cpus);  in compute_effective_cpumask()
1265 		cpumask_and(new_cpus, cs->cpus_allowed, parent->effective_cpus);  in compute_effective_cpumask()
1281 static void update_sibling_cpumasks(struct cpuset *parent, struct cpuset *cs,
1379 	struct cpuset *parent = parent_cs(cs);  in update_parent_subparts_cpumask()  local
1392 	if (!is_partition_valid(parent)) {  in update_parent_subparts_cpumask()
1393 		return is_partition_invalid(parent)  in update_parent_subparts_cpumask()
1410 		if (!cpumask_intersects(cs->cpus_allowed, parent->cpus_allowed))  in update_parent_subparts_cpumask()
1417 		if (cpumask_subset(parent->effective_cpus, cs->cpus_allowed) &&  in update_parent_subparts_cpumask()
1418 		    partition_is_populated(parent, cs))  in update_parent_subparts_cpumask()
1430 				       parent->subparts_cpus);  in update_parent_subparts_cpumask()
1440 				       parent->subparts_cpus);  in update_parent_subparts_cpumask()
1457 				       parent->subparts_cpus);  in update_parent_subparts_cpumask()
1459 		cpumask_and(tmp->addmask, newmask, parent->cpus_allowed);  in update_parent_subparts_cpumask()
1461 					parent->subparts_cpus);  in update_parent_subparts_cpumask()
1472 		    cpumask_subset(parent->effective_cpus, tmp->addmask) &&  in update_parent_subparts_cpumask()
1474 		    partition_is_populated(parent, cs)) {  in update_parent_subparts_cpumask()
1478 					       parent->subparts_cpus);  in update_parent_subparts_cpumask()
1500 					  parent->cpus_allowed);  in update_parent_subparts_cpumask()
1502 					parent->subparts_cpus);  in update_parent_subparts_cpumask()
1504 		if ((is_partition_valid(cs) && !parent->nr_subparts_cpus) ||  in update_parent_subparts_cpumask()
1506 		     cpumask_subset(parent->effective_cpus, tmp->addmask) &&  in update_parent_subparts_cpumask()
1507 		     partition_is_populated(parent, cs))) {  in update_parent_subparts_cpumask()
1513 		    parent->nr_subparts_cpus)  in update_parent_subparts_cpumask()
1515 					       parent->subparts_cpus);  in update_parent_subparts_cpumask()
1560 		cpumask_or(parent->subparts_cpus,  in update_parent_subparts_cpumask()
1561 			   parent->subparts_cpus, tmp->addmask);  in update_parent_subparts_cpumask()
1562 		cpumask_andnot(parent->effective_cpus,  in update_parent_subparts_cpumask()
1563 			       parent->effective_cpus, tmp->addmask);  in update_parent_subparts_cpumask()
1566 		cpumask_andnot(parent->subparts_cpus,  in update_parent_subparts_cpumask()
1567 			       parent->subparts_cpus, tmp->delmask);  in update_parent_subparts_cpumask()
1572 		cpumask_or(parent->effective_cpus,  in update_parent_subparts_cpumask()
1573 			   parent->effective_cpus, tmp->delmask);  in update_parent_subparts_cpumask()
1576 	parent->nr_subparts_cpus = cpumask_weight(parent->subparts_cpus);  in update_parent_subparts_cpumask()
1584 		update_tasks_cpumask(parent, tmp->addmask);  in update_parent_subparts_cpumask()
1585 		if (parent->child_ecpus_count)  in update_parent_subparts_cpumask()
1586 			update_sibling_cpumasks(parent, cs, tmp);  in update_parent_subparts_cpumask()
1633 		struct cpuset *parent = parent_cs(cp);  in update_cpumasks_hier()  local
1636 		compute_effective_cpumask(tmp->new_cpus, cp, parent);  in update_cpumasks_hier()
1649 			cpumask_copy(tmp->new_cpus, parent->effective_cpus);  in update_cpumasks_hier()
1652 				parent->child_ecpus_count++;  in update_cpumasks_hier()
1656 			WARN_ON_ONCE(!parent->child_ecpus_count);  in update_cpumasks_hier()
1657 			parent->child_ecpus_count--;  in update_cpumasks_hier()
1670 		    (is_sched_load_balance(parent) == is_sched_load_balance(cp)))) {  in update_cpumasks_hier()
1684 			switch (parent->partition_root_state) {  in update_cpumasks_hier()
1699 					   is_partition_invalid(parent)  in update_cpumasks_hier()
1760 		    (is_sched_load_balance(parent) != is_sched_load_balance(cp))) {  in update_cpumasks_hier()
1761 			if (is_sched_load_balance(parent))  in update_cpumasks_hier()
1794 static void update_sibling_cpumasks(struct cpuset *parent, struct cpuset *cs,  in update_sibling_cpumasks()  argument
1813 	cpuset_for_each_child(sibling, pos_css, parent) {  in update_sibling_cpumasks()
1875 		struct cpuset *cp, *parent;  in update_cpumask()  local
1887 		parent = parent_cs(cs);  in update_cpumask()
1888 		cpuset_for_each_child(cp, css, parent)  in update_cpumask()
1938 		struct cpuset *parent = parent_cs(cs);  in update_cpumask()  local
1944 		if (parent->child_ecpus_count)  in update_cpumask()
1945 			update_sibling_cpumasks(parent, cs, &tmp);  in update_cpumask()
2116 		struct cpuset *parent = parent_cs(cp);  in update_nodemasks_hier()  local
2118 		nodes_and(*new_mems, cp->mems_allowed, parent->effective_mems);  in update_nodemasks_hier()
2125 			*new_mems = parent->effective_mems;  in update_nodemasks_hier()
2327 	struct cpuset *parent = parent_cs(cs);  in update_prstate()  local
2380 			compute_effective_cpumask(cs->effective_cpus, cs, parent);  in update_prstate()
3266 	struct cpuset *parent = parent_cs(cs);  in cpuset_css_online()  local
3270 	if (!parent)  in cpuset_css_online()
3277 	if (is_spread_page(parent))  in cpuset_css_online()
3279 	if (is_spread_slab(parent))  in cpuset_css_online()
3286 		cpumask_copy(cs->effective_cpus, parent->effective_cpus);  in cpuset_css_online()
3287 		cs->effective_mems = parent->effective_mems;  in cpuset_css_online()
3289 		parent->child_ecpus_count++;  in cpuset_css_online()
3296 	    !is_sched_load_balance(parent))  in cpuset_css_online()
3318 	cpuset_for_each_child(tmp_cs, pos_css, parent) {  in cpuset_css_online()
3327 	cs->mems_allowed = parent->mems_allowed;  in cpuset_css_online()
3328 	cs->effective_mems = parent->mems_allowed;  in cpuset_css_online()
3329 	cpumask_copy(cs->cpus_allowed, parent->cpus_allowed);  in cpuset_css_online()
3330 	cpumask_copy(cs->effective_cpus, parent->cpus_allowed);  in cpuset_css_online()
3364 		struct cpuset *parent = parent_cs(cs);  in cpuset_css_offline()  local
3367 		parent->child_ecpus_count--;  in cpuset_css_offline()
3554 	struct cpuset *parent;  in remove_tasks_in_empty_cpuset()  local
3560 	parent = parent_cs(cs);  in remove_tasks_in_empty_cpuset()
3561 	while (cpumask_empty(parent->cpus_allowed) ||  in remove_tasks_in_empty_cpuset()
3562 			nodes_empty(parent->mems_allowed))  in remove_tasks_in_empty_cpuset()
3563 		parent = parent_cs(parent);  in remove_tasks_in_empty_cpuset()
3565 	if (cgroup_transfer_tasks(parent->css.cgroup, cs->css.cgroup)) {  in remove_tasks_in_empty_cpuset()
3654 	struct cpuset *parent;  in cpuset_hotplug_update_tasks()  local
3669 	parent = parent_cs(cs);  in cpuset_hotplug_update_tasks()
3670 	compute_effective_cpumask(&new_cpus, cs, parent);  in cpuset_hotplug_update_tasks()
3671 	nodes_and(new_mems, cs->mems_allowed, parent->effective_mems);  in cpuset_hotplug_update_tasks()
3695 		compute_effective_cpumask(&new_cpus, cs, parent);  in cpuset_hotplug_update_tasks()
3705 	if (is_partition_valid(cs) && (!parent->nr_subparts_cpus ||  in cpuset_hotplug_update_tasks()
3715 			compute_effective_cpumask(&new_cpus, cs, parent);  in cpuset_hotplug_update_tasks()
3719 		parent_prs = parent->partition_root_state;  in cpuset_hotplug_update_tasks()
3739 	else if (is_partition_valid(parent) && is_partition_invalid(cs)) {  in cpuset_hotplug_update_tasks()