190 static int cgroup_destroy_locked(struct cgroup *cgrp);
191 static int create_css(struct cgroup *cgrp, struct cgroup_subsys *ss,
195 static int cgroup_addrm_files(struct cgroup *cgrp, struct cftype cfts[],
229 static struct cgroup *cgroup_parent(struct cgroup *cgrp)  in cgroup_parent()
234 		return container_of(parent_css, struct cgroup, self);  in cgroup_parent()
249 static struct cgroup_subsys_state *cgroup_css(struct cgroup *cgrp,  in cgroup_css()
269 static struct cgroup_subsys_state *cgroup_e_css(struct cgroup *cgrp,  in cgroup_e_css()
302 struct cgroup_subsys_state *cgroup_get_e_css(struct cgroup *cgrp,  in cgroup_get_e_css()
325 static inline bool cgroup_is_dead(const struct cgroup *cgrp)  in cgroup_is_dead()
332 	struct cgroup *cgrp = of->kn->parent->priv;  in of_css()
359 bool cgroup_is_descendant(struct cgroup *cgrp, struct cgroup *ancestor)  in cgroup_is_descendant()
369 static int notify_on_release(const struct cgroup *cgrp)  in notify_on_release()
425 static void check_for_release(struct cgroup *cgrp);
437 	struct cgroup		*cgrp;
481 static void cgroup_update_populated(struct cgroup *cgrp, bool populated)  in cgroup_update_populated()
541 		struct cgroup *cgrp = link->cgrp;  in put_css_set_locked()
593 			     struct cgroup *new_cgrp,  in compare_css_sets()
616 		struct cgroup *cgrp1, *cgrp2;  in compare_css_sets()
660 					struct cgroup *cgrp,  in find_existing_css_set()
746 			 struct cgroup *cgrp)  in link_css_set()
779 				    struct cgroup *cgrp)  in find_css_set()
827 		struct cgroup *c = link->cgrp;  in find_css_set()
844 			      &cset->subsys[ssid]->cgroup->e_csets[ssid]);  in find_css_set()
853 	struct cgroup *root_cgrp = kf_root->kn->priv;  in cgroup_root_from_kf()
895 	struct cgroup *cgrp = &root->cgrp;  in cgroup_destroy_root()
933 static struct cgroup *cset_cgroup_from_root(struct css_set *cset,  in cset_cgroup_from_root()
936 	struct cgroup *res = NULL;  in cset_cgroup_from_root()
947 			struct cgroup *c = link->cgrp;  in cset_cgroup_from_root()
964 static struct cgroup *task_cgroup_from_root(struct task_struct *task,  in task_cgroup_from_root()
1001 static int cgroup_populate_dir(struct cgroup *cgrp, unsigned int subsys_mask);
1005 static char *cgroup_file_name(struct cgroup *cgrp, const struct cftype *cft,  in cgroup_file_name()
1042 static void cgroup_get(struct cgroup *cgrp)  in cgroup_get()
1048 static bool cgroup_tryget(struct cgroup *cgrp)  in cgroup_tryget()
1053 static void cgroup_put(struct cgroup *cgrp)  in cgroup_put()
1071 static unsigned int cgroup_calc_child_subsys_mask(struct cgroup *cgrp,  in cgroup_calc_child_subsys_mask()
1074 	struct cgroup *parent = cgroup_parent(cgrp);  in cgroup_calc_child_subsys_mask()
1116 static void cgroup_refresh_child_subsys_mask(struct cgroup *cgrp)  in cgroup_refresh_child_subsys_mask()
1134 	struct cgroup *cgrp;  in cgroup_kn_unlock()
1162 static struct cgroup *cgroup_kn_lock_live(struct kernfs_node *kn)  in cgroup_kn_lock_live()
1164 	struct cgroup *cgrp;  in cgroup_kn_lock_live()
1190 static void cgroup_rm_file(struct cgroup *cgrp, const struct cftype *cft)  in cgroup_rm_file()
1203 static void cgroup_clear_dir(struct cgroup *cgrp, unsigned int subsys_mask)  in cgroup_clear_dir()
1286 		css->cgroup = &dst_root->cgrp;  in rebind_subsystems()
1605 static void init_cgroup_housekeeping(struct cgroup *cgrp)  in init_cgroup_housekeeping()
1615 	cgrp->self.cgroup = cgrp;  in init_cgroup_housekeeping()
1628 	struct cgroup *cgrp = &root->cgrp;  in init_cgroup_root()
1648 	struct cgroup *root_cgrp = &root->cgrp;  in cgroup_setup_root()
1944 	struct cgroup *cgrp;  in task_cgroup_path()
2044 static void cgroup_task_migrate(struct cgroup *old_cgrp,  in cgroup_task_migrate()
2119 				   struct cgroup *dst_cgrp,  in cgroup_migrate_add_src()
2122 	struct cgroup *src_cgrp;  in cgroup_migrate_add_src()
2157 static int cgroup_migrate_prepare_dst(struct cgroup *dst_cgrp,  in cgroup_migrate_prepare_dst()
2230 static int cgroup_migrate(struct cgroup *cgrp, struct task_struct *leader,  in cgroup_migrate()
2349 static int cgroup_attach_task(struct cgroup *dst_cgrp,  in cgroup_attach_task()
2388 	struct cgroup *cgrp;  in __cgroup_procs_write()
2478 		struct cgroup *from_cgrp;  in cgroup_attach_task_all()
2512 	struct cgroup *cgrp;  in cgroup_release_agent_write()
2529 	struct cgroup *cgrp = seq_css(seq)->cgroup;  in cgroup_release_agent_show()
2565 	struct cgroup *cgrp = seq_css(seq)->cgroup;  in cgroup_root_controllers_show()
2575 	struct cgroup *cgrp = seq_css(seq)->cgroup;  in cgroup_controllers_show()
2584 	struct cgroup *cgrp = seq_css(seq)->cgroup;  in cgroup_subtree_control_show()
2599 static int cgroup_update_dfl_csses(struct cgroup *cgrp)  in cgroup_update_dfl_csses()
2614 		if (css->cgroup == cgrp)  in cgroup_update_dfl_csses()
2617 		list_for_each_entry(link, &css->cgroup->cset_links, cset_link)  in cgroup_update_dfl_csses()
2693 	struct cgroup *cgrp, *child;  in cgroup_subtree_control_write()
2924 	seq_printf(seq, "%d\n", (bool)seq_css(seq)->cgroup->populated_cnt);  in cgroup_populated_show()
2931 	struct cgroup *cgrp = of->kn->parent->priv;  in cgroup_file_write()
3019 	struct cgroup *cgrp = kn->priv;  in cgroup_rename()
3067 static int cgroup_add_file(struct cgroup *cgrp, struct cftype *cft)  in cgroup_add_file()
3105 static int cgroup_addrm_files(struct cgroup *cgrp, struct cftype cfts[],  in cgroup_addrm_files()
3142 	struct cgroup *root = &ss->root->cgrp;  in cgroup_apply_cftypes()
3150 		struct cgroup *cgrp = css->cgroup;  in cgroup_apply_cftypes()
3337 static int cgroup_task_count(const struct cgroup *cgrp)  in cgroup_task_count()
3642 		it->cset_pos = &css->cgroup->e_csets[css->ss->id];  in css_task_iter_start()
3644 		it->cset_pos = &css->cgroup->cset_links;  in css_task_iter_start()
3710 int cgroup_transfer_tasks(struct cgroup *to, struct cgroup *from)  in cgroup_transfer_tasks()
3787 	struct cgroup *owner;
3815 static void cgroup_pidlist_destroy_all(struct cgroup *cgrp)  in cgroup_pidlist_destroy_all()
3908 static pid_t cgroup_pid_fry(struct cgroup *cgrp, pid_t pid)  in cgroup_pid_fry()
3926 static struct cgroup_pidlist *cgroup_pidlist_find(struct cgroup *cgrp,  in cgroup_pidlist_find()
3947 static struct cgroup_pidlist *cgroup_pidlist_find_create(struct cgroup *cgrp,  in cgroup_pidlist_find_create()
3975 static int pidlist_array_load(struct cgroup *cgrp, enum cgroup_filetype type,  in pidlist_array_load()
4046 	struct cgroup *cgrp;  in cgroupstats_build()
4114 	struct cgroup *cgrp = seq_css(s)->cgroup;  in cgroup_pidlist_start()
4174 	mutex_unlock(&seq_css(s)->cgroup->pidlist_mutex);  in cgroup_pidlist_stop()
4191 		*pos = cgroup_pid_fry(seq_css(s)->cgroup, *p);  in cgroup_pidlist_next()
4206 	return notify_on_release(css->cgroup);  in cgroup_read_notify_on_release()
4213 		set_bit(CGRP_NOTIFY_ON_RELEASE, &css->cgroup->flags);  in cgroup_write_notify_on_release()
4215 		clear_bit(CGRP_NOTIFY_ON_RELEASE, &css->cgroup->flags);  in cgroup_write_notify_on_release()
4222 	return test_bit(CGRP_CPUSET_CLONE_CHILDREN, &css->cgroup->flags);  in cgroup_clone_children_read()
4229 		set_bit(CGRP_CPUSET_CLONE_CHILDREN, &css->cgroup->flags);  in cgroup_clone_children_write()
4231 		clear_bit(CGRP_CPUSET_CLONE_CHILDREN, &css->cgroup->flags);  in cgroup_clone_children_write()
4324 static int cgroup_populate_dir(struct cgroup *cgrp, unsigned int subsys_mask)  in cgroup_populate_dir()
4375 	struct cgroup *cgrp = css->cgroup;  in css_free_work_fn()
4430 	struct cgroup *cgrp = css->cgroup;  in css_release_work_fn()
4472 			      struct cgroup_subsys *ss, struct cgroup *cgrp)  in init_and_link_css()
4479 	css->cgroup = cgrp;  in init_and_link_css()
4506 		rcu_assign_pointer(css->cgroup->subsys[ss->id], css);  in online_css()
4529 	RCU_INIT_POINTER(css->cgroup->subsys[ss->id], NULL);  in offline_css()
4531 	wake_up_all(&css->cgroup->offline_waitq);  in offline_css()
4544 static int create_css(struct cgroup *cgrp, struct cgroup_subsys *ss,  in create_css()
4547 	struct cgroup *parent = cgroup_parent(cgrp);  in create_css()
4596 	cgroup_clear_dir(css->cgroup, 1 << css->ss->id);  in create_css()
4609 	struct cgroup *parent, *cgrp;  in cgroup_mkdir()
4788 	cgroup_clear_dir(css->cgroup, 1 << css->ss->id);  in kill_css()
4833 static int cgroup_destroy_locked(struct cgroup *cgrp)  in cgroup_destroy_locked()
4886 	struct cgroup *cgrp;  in cgroup_rmdir()
5119 		struct cgroup *cgrp;  in proc_cgroup_show()
5319 static void check_for_release(struct cgroup *cgrp)  in check_for_release()
5351 	struct cgroup *cgrp =  in cgroup_release_agent()
5352 		container_of(work, struct cgroup, release_agent_work);  in cgroup_release_agent()
5431 	struct cgroup *cgrp;  in css_tryget_online_from_dir()
5490 	return cgroup_task_count(css->cgroup);  in debug_taskcount_read()
5524 		struct cgroup *c = link->cgrp;  in current_css_set_cg_links_read()
5543 	list_for_each_entry(link, &css->cgroup->cset_links, cset_link) {  in cgroup_css_links_read()
5571 	return (!cgroup_has_tasks(css->cgroup) &&  in releasable_read()
5572 		!css_has_online_children(&css->cgroup->self));  in releasable_read()