352 	return !cgroup_parent(cgrp);  in cgroup_is_mixable()
407 	while ((cgrp = cgroup_parent(cgrp))) {  in cgroup_is_valid_domain()
420 	struct cgroup *parent = cgroup_parent(cgrp);  in cgroup_control()
441 	struct cgroup *parent = cgroup_parent(cgrp);  in cgroup_ss_mask()
521 		cgrp = cgroup_parent(cgrp);  in cgroup_e_css_by_mask()
552 		cgrp = cgroup_parent(cgrp);  in cgroup_e_css()
581 		cgrp = cgroup_parent(cgrp);  in cgroup_get_e_css()
826 		cgrp = cgroup_parent(cgrp);  in cgroup_update_populated()
958 		if (cgroup_parent(link->cgrp))  in put_css_set_locked()
1167 	if (cgroup_parent(cgrp))  in link_css_set()
3380 	struct cgroup *parent = cgroup_parent(cgrp);  in cgroup_enable_threaded()
3932 		if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgroup_parent(cgrp))  in cgroup_addrm_files()
3934 		if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgroup_parent(cgrp))  in cgroup_addrm_files()
4728 		com_cgrp = cgroup_parent(com_cgrp);  in cgroup_procs_write_permission()
4979 		if (cgroup_parent(cgrp)) {  in css_free_rwork_fn()
4986 			cgroup_put(cgroup_parent(cgrp));  in css_free_rwork_fn()
5035 		for (tcgrp = cgroup_parent(cgrp); tcgrp;  in css_release_work_fn()
5036 		     tcgrp = cgroup_parent(tcgrp))  in css_release_work_fn()
5087 	if (cgroup_parent(cgrp)) {  in init_and_link_css()
5088 		css->parent = cgroup_css(cgroup_parent(cgrp), ss);  in init_and_link_css()
5150 	struct cgroup *parent = cgroup_parent(cgrp);  in css_create()
5183 	    cgroup_parent(parent)) {  in css_create()
5271 	for (tcgrp = cgrp; tcgrp; tcgrp = cgroup_parent(tcgrp)) {  in cgroup_create()
5297 	list_add_tail_rcu(&cgrp->self.sibling, &cgroup_parent(cgrp)->self.children);  in cgroup_create()
5340 	for (cgroup = parent; cgroup; cgroup = cgroup_parent(cgroup)) {  in cgroup_check_hierarchy_limits()
5525 	struct cgroup *tcgrp, *parent = cgroup_parent(cgrp);  in cgroup_destroy_locked()
5572 	for (tcgrp = cgroup_parent(cgrp); tcgrp; tcgrp = cgroup_parent(tcgrp)) {  in cgroup_destroy_locked()