1211 	struct cgroup *root_cgrp = kf_root->kn->priv;  in cgroup_root_from_kf()  local
1213 	return root_cgrp->root;  in cgroup_root_from_kf()
1898 	struct cgroup *root_cgrp = &root->cgrp;  in cgroup_setup_root()  local
1905 	ret = cgroup_idr_alloc(&root->cgroup_idr, root_cgrp, 1, 2, GFP_KERNEL);  in cgroup_setup_root()
1908 	root_cgrp->id = ret;  in cgroup_setup_root()
1909 	root_cgrp->ancestor_ids[0] = ret;  in cgroup_setup_root()
1911 	ret = percpu_ref_init(&root_cgrp->self.refcnt, css_release,  in cgroup_setup_root()
1937 					   root_cgrp);  in cgroup_setup_root()
1942 	root_cgrp->kn = root->kf_root->kn;  in cgroup_setup_root()
1944 	ret = css_populate_dir(&root_cgrp->self);  in cgroup_setup_root()
1952 	ret = cgroup_bpf_inherit(root_cgrp);  in cgroup_setup_root()
1971 		link_css_set(&tmp_links, cset, root_cgrp);  in cgroup_setup_root()
1973 			cgroup_update_populated(root_cgrp, true);  in cgroup_setup_root()
1977 	BUG_ON(!list_empty(&root_cgrp->self.children));  in cgroup_setup_root()
1980 	kernfs_activate(root_cgrp->kn);  in cgroup_setup_root()
1990 	percpu_ref_exit(&root_cgrp->self.refcnt);  in cgroup_setup_root()