373 	return !cgroup_parent(cgrp);  in cgroup_is_mixable()
428 	while ((cgrp = cgroup_parent(cgrp))) {  in cgroup_is_valid_domain()
441 	struct cgroup *parent = cgroup_parent(cgrp);  in cgroup_control()
462 	struct cgroup *parent = cgroup_parent(cgrp);  in cgroup_ss_mask()
520 		cgrp = cgroup_parent(cgrp);  in cgroup_e_css_by_mask()
554 		cgrp = cgroup_parent(cgrp);  in cgroup_e_css()
586 		cgrp = cgroup_parent(cgrp);  in cgroup_get_e_css()
831 		cgrp = cgroup_parent(cgrp);  in cgroup_update_populated()
962 		if (cgroup_parent(link->cgrp))  in put_css_set_locked()
1171 	if (cgroup_parent(cgrp))  in link_css_set()
3540 	struct cgroup *parent = cgroup_parent(cgrp);  in cgroup_enable_threaded()
4337 		if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgroup_parent(cgrp))  in cgroup_addrm_files()
4339 		if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgroup_parent(cgrp))  in cgroup_addrm_files()
5189 		com_cgrp = cgroup_parent(com_cgrp);  in cgroup_procs_write_permission()
5467 		if (cgroup_parent(cgrp)) {  in css_free_rwork_fn()
5474 			cgroup_put(cgroup_parent(cgrp));  in css_free_rwork_fn()
5524 		parent_cgrp = cgroup_parent(cgrp);  in css_release_work_fn()
5527 			parent_cgrp = cgroup_parent(parent_cgrp);  in css_release_work_fn()
5538 		for (tcgrp = cgroup_parent(cgrp); tcgrp;  in css_release_work_fn()
5539 		     tcgrp = cgroup_parent(tcgrp))  in css_release_work_fn()
5587 	if (cgroup_parent(cgrp)) {  in init_and_link_css()
5588 		css->parent = cgroup_css(cgroup_parent(cgrp), ss);  in init_and_link_css()
5663 	struct cgroup *parent = cgroup_parent(cgrp);  in css_create()
5775 	for (tcgrp = cgrp; tcgrp; tcgrp = cgroup_parent(tcgrp)) {  in cgroup_create()
5801 	list_add_tail_rcu(&cgrp->self.sibling, &cgroup_parent(cgrp)->self.children);  in cgroup_create()
5837 	for (cgroup = parent; cgroup; cgroup = cgroup_parent(cgroup)) {  in cgroup_check_hierarchy_limits()
6015 	struct cgroup *tcgrp, *parent = cgroup_parent(cgrp);  in cgroup_destroy_locked()
6062 	for (tcgrp = parent; tcgrp; tcgrp = cgroup_parent(tcgrp)) {  in cgroup_destroy_locked()