336 static void *cgroup_idr_replace(struct idr *idr, void *ptr, int id)  in cgroup_idr_replace()  argument
341 	ret = idr_replace(idr, ptr, id);  in cgroup_idr_replace()
346 static void cgroup_idr_remove(struct idr *idr, int id)  in cgroup_idr_remove()  argument
349 	idr_remove(idr, id);  in cgroup_idr_remove()
489 		return rcu_dereference_check(cgrp->subsys[ss->id],  in cgroup_css()
539 	while (!(cgroup_ss_mask(cgrp) & (1 << ss->id))) {  in cgroup_e_css_by_mask()
577 	return init_css_set.subsys[ss->id];  in cgroup_e_css()
609 	css = init_css_set.subsys[ss->id];  in cgroup_get_e_css()
670 		return rcu_dereference_raw(cgrp->subsys[cft->ss->id]);  in of_css()
1332 	int id;  in cgroup_init_root_id()  local
1336 	id = idr_alloc_cyclic(&cgroup_hierarchy_idr, root, 0, 0, GFP_KERNEL);  in cgroup_init_root_id()
1337 	if (id < 0)  in cgroup_init_root_id()
1338 		return id;  in cgroup_init_root_id()
1340 	root->hierarchy_id = id;  in cgroup_init_root_id()
1853 		WARN_ON(!list_empty(&dcgrp->e_csets[ss->id]));  in rebind_subsystems()
1854 		list_for_each_entry_safe(cset, cset_pos, &scgrp->e_csets[ss->id],  in rebind_subsystems()
1855 					 e_cset_node[ss->id]) {  in rebind_subsystems()
1856 			list_move_tail(&cset->e_cset_node[ss->id],  in rebind_subsystems()
1857 				       &dcgrp->e_csets[ss->id]);  in rebind_subsystems()
1866 				if (it->cset_head == &scgrp->e_csets[ss->id])  in rebind_subsystems()
1867 					it->cset_head = &dcgrp->e_csets[ss->id];  in rebind_subsystems()
3227 	if (cgroup_control(cgrp) & (1 << ss->id))  in css_visible()
3229 	if (!(cgroup_ss_mask(cgrp) & (1 << ss->id)))  in css_visible()
3258 			if (!(cgroup_ss_mask(dsct) & (1 << ss->id)))  in cgroup_apply_control_enable()
3310 			    !(cgroup_ss_mask(dsct) & (1 << ss->id))) {  in cgroup_apply_control_disable()
4430 	if (!cgroup_ssid_enabled(ss->id))  in cgroup_add_cftypes()
4792 		cset = container_of(l, struct css_set, e_cset_node[it->ss->id]);  in css_task_iter_next_css_set()
4955 		it->cset_pos = &css->cgroup->e_csets[css->ss->id];  in css_task_iter_start()
5379 		int id = css->id;  in css_free_rwork_fn()  local
5382 		cgroup_idr_remove(&ss->css_idr, id);  in css_free_rwork_fn()
5435 		cgroup_idr_replace(&ss->css_idr, NULL, css->id);  in css_release_work_fn()
5489 	css->id = -1;  in init_and_link_css()
5519 		rcu_assign_pointer(css->cgroup->subsys[ss->id], css);  in online_css()
5542 	RCU_INIT_POINTER(css->cgroup->subsys[ss->id], NULL);  in offline_css()
5581 	css->id = err;  in css_create()
5585 	cgroup_idr_replace(&ss->css_idr, css, css->id);  in css_create()
6025 		css->id = 1;  in cgroup_init_subsys()
6027 		css->id = cgroup_idr_alloc(&ss->css_idr, css, 1, 2, GFP_KERNEL);  in cgroup_init_subsys()
6028 		BUG_ON(css->id < 0);  in cgroup_init_subsys()
6035 	init_css_set.subsys[ss->id] = css;  in cgroup_init_subsys()
6037 	have_fork_callback |= (bool)ss->fork << ss->id;  in cgroup_init_subsys()
6038 	have_exit_callback |= (bool)ss->exit << ss->id;  in cgroup_init_subsys()
6039 	have_release_callback |= (bool)ss->release << ss->id;  in cgroup_init_subsys()
6040 	have_canfork_callback |= (bool)ss->can_fork << ss->id;  in cgroup_init_subsys()
6071 		WARN(!ss->css_alloc || !ss->css_free || ss->name || ss->id,  in cgroup_init_early()
6074 		     ss->id, ss->name);  in cgroup_init_early()
6078 		ss->id = i;  in cgroup_init_early()
6125 				init_css_set.subsys[ss->id];  in cgroup_init()
6127 			css->id = cgroup_idr_alloc(&ss->css_idr, css, 1, 2,  in cgroup_init()
6129 			BUG_ON(css->id < 0);  in cgroup_init()
6149 		cgrp_dfl_root.subsys_mask |= 1 << ss->id;  in cgroup_init()
6155 			cgrp_dfl_implicit_ss_mask |= 1 << ss->id;  in cgroup_init()
6157 			cgrp_dfl_inhibit_ss_mask |= 1 << ss->id;  in cgroup_init()
6160 			cgrp_dfl_threaded_ss_mask |= 1 << ss->id;  in cgroup_init()
6209 void cgroup_path_from_kernfs_id(u64 id, char *buf, size_t buflen)  in cgroup_path_from_kernfs_id()  argument
6213 	kn = kernfs_find_and_get_node_by_id(cgrp_dfl_root.kf_root, id);  in cgroup_path_from_kernfs_id()
6226 struct cgroup *cgroup_get_from_id(u64 id)  in cgroup_get_from_id()  argument
6231 	kn = kernfs_find_and_get_node_by_id(cgrp_dfl_root.kf_root, id);  in cgroup_get_from_id()
6838 struct cgroup_subsys_state *css_from_id(int id, struct cgroup_subsys *ss)  in css_from_id()  argument
6841 	return idr_find(&ss->css_idr, id);  in css_from_id()