853 	struct cgroup *root_cgrp = kf_root->kn->priv;  in cgroup_root_from_kf()  local
855 	return root_cgrp->root;  in cgroup_root_from_kf()
1648 	struct cgroup *root_cgrp = &root->cgrp;  in cgroup_setup_root()  local
1655 	ret = cgroup_idr_alloc(&root->cgroup_idr, root_cgrp, 1, 2, GFP_NOWAIT);  in cgroup_setup_root()
1658 	root_cgrp->id = ret;  in cgroup_setup_root()
1660 	ret = percpu_ref_init(&root_cgrp->self.refcnt, css_release, 0,  in cgroup_setup_root()
1681 					   root_cgrp);  in cgroup_setup_root()
1686 	root_cgrp->kn = root->kf_root->kn;  in cgroup_setup_root()
1693 	ret = cgroup_addrm_files(root_cgrp, base_files, true);  in cgroup_setup_root()
1715 		link_css_set(&tmp_links, cset, root_cgrp);  in cgroup_setup_root()
1718 	BUG_ON(!list_empty(&root_cgrp->self.children));  in cgroup_setup_root()
1721 	kernfs_activate(root_cgrp->kn);  in cgroup_setup_root()
1731 	percpu_ref_exit(&root_cgrp->self.refcnt);  in cgroup_setup_root()