Lines Matching refs:cgrp
165 struct cgroup_root cgrp_dfl_root = { .cgrp.rstat_cpu = &cgrp_dfl_root_rstat_cpu };
236 static int cgroup_apply_control(struct cgroup *cgrp);
237 static void cgroup_finalize_control(struct cgroup *cgrp, int ret);
240 static int cgroup_destroy_locked(struct cgroup *cgrp);
241 static struct cgroup_subsys_state *css_create(struct cgroup *cgrp,
246 struct cgroup *cgrp, struct cftype cfts[],
312 bool cgroup_on_dfl(const struct cgroup *cgrp) in cgroup_on_dfl() argument
314 return cgrp->root == &cgrp_dfl_root; in cgroup_on_dfl()
348 static bool cgroup_has_tasks(struct cgroup *cgrp) in cgroup_has_tasks() argument
350 return cgrp->nr_populated_csets; in cgroup_has_tasks()
353 bool cgroup_is_threaded(struct cgroup *cgrp) in cgroup_is_threaded() argument
355 return cgrp->dom_cgrp != cgrp; in cgroup_is_threaded()
359 static bool cgroup_is_mixable(struct cgroup *cgrp) in cgroup_is_mixable() argument
366 return !cgroup_parent(cgrp); in cgroup_is_mixable()
370 static bool cgroup_can_be_thread_root(struct cgroup *cgrp) in cgroup_can_be_thread_root() argument
373 if (cgroup_is_mixable(cgrp)) in cgroup_can_be_thread_root()
377 if (cgroup_is_threaded(cgrp)) in cgroup_can_be_thread_root()
381 if (cgrp->nr_populated_domain_children) in cgroup_can_be_thread_root()
385 if (cgrp->subtree_control & ~cgrp_dfl_threaded_ss_mask) in cgroup_can_be_thread_root()
392 bool cgroup_is_thread_root(struct cgroup *cgrp) in cgroup_is_thread_root() argument
395 if (cgroup_is_threaded(cgrp)) in cgroup_is_thread_root()
399 if (cgrp->nr_threaded_children) in cgroup_is_thread_root()
406 if (cgroup_has_tasks(cgrp) && in cgroup_is_thread_root()
407 (cgrp->subtree_control & cgrp_dfl_threaded_ss_mask)) in cgroup_is_thread_root()
414 static bool cgroup_is_valid_domain(struct cgroup *cgrp) in cgroup_is_valid_domain() argument
417 if (cgroup_is_threaded(cgrp)) in cgroup_is_valid_domain()
421 while ((cgrp = cgroup_parent(cgrp))) { in cgroup_is_valid_domain()
422 if (!cgroup_is_mixable(cgrp) && cgroup_is_thread_root(cgrp)) in cgroup_is_valid_domain()
424 if (cgroup_is_threaded(cgrp)) in cgroup_is_valid_domain()
432 static u16 cgroup_control(struct cgroup *cgrp) in cgroup_control() argument
434 struct cgroup *parent = cgroup_parent(cgrp); in cgroup_control()
435 u16 root_ss_mask = cgrp->root->subsys_mask; in cgroup_control()
441 if (cgroup_is_threaded(cgrp)) in cgroup_control()
446 if (cgroup_on_dfl(cgrp)) in cgroup_control()
453 static u16 cgroup_ss_mask(struct cgroup *cgrp) in cgroup_ss_mask() argument
455 struct cgroup *parent = cgroup_parent(cgrp); in cgroup_ss_mask()
461 if (cgroup_is_threaded(cgrp)) in cgroup_ss_mask()
466 return cgrp->root->subsys_mask; in cgroup_ss_mask()
480 static struct cgroup_subsys_state *cgroup_css(struct cgroup *cgrp, in cgroup_css() argument
484 return rcu_dereference_check(cgrp->subsys[ss->id], in cgroup_css()
487 return &cgrp->self; in cgroup_css()
498 static struct cgroup_subsys_state *cgroup_tryget_css(struct cgroup *cgrp, in cgroup_tryget_css() argument
504 css = cgroup_css(cgrp, ss); in cgroup_tryget_css()
522 static struct cgroup_subsys_state *cgroup_e_css_by_mask(struct cgroup *cgrp, in cgroup_e_css_by_mask() argument
528 return &cgrp->self; in cgroup_e_css_by_mask()
534 while (!(cgroup_ss_mask(cgrp) & (1 << ss->id))) { in cgroup_e_css_by_mask()
535 cgrp = cgroup_parent(cgrp); in cgroup_e_css_by_mask()
536 if (!cgrp) in cgroup_e_css_by_mask()
540 return cgroup_css(cgrp, ss); in cgroup_e_css_by_mask()
556 struct cgroup_subsys_state *cgroup_e_css(struct cgroup *cgrp, in cgroup_e_css() argument
565 css = cgroup_css(cgrp, ss); in cgroup_e_css()
569 cgrp = cgroup_parent(cgrp); in cgroup_e_css()
570 } while (cgrp); in cgroup_e_css()
586 struct cgroup_subsys_state *cgroup_get_e_css(struct cgroup *cgrp, in cgroup_get_e_css() argument
597 css = cgroup_css(cgrp, ss); in cgroup_get_e_css()
601 cgrp = cgroup_parent(cgrp); in cgroup_get_e_css()
602 } while (cgrp); in cgroup_get_e_css()
612 static void cgroup_get_live(struct cgroup *cgrp) in cgroup_get_live() argument
614 WARN_ON_ONCE(cgroup_is_dead(cgrp)); in cgroup_get_live()
615 css_get(&cgrp->self); in cgroup_get_live()
623 int __cgroup_task_count(const struct cgroup *cgrp) in __cgroup_task_count() argument
630 list_for_each_entry(link, &cgrp->cset_links, cset_link) in __cgroup_task_count()
640 int cgroup_task_count(const struct cgroup *cgrp) in cgroup_task_count() argument
645 count = __cgroup_task_count(cgrp); in cgroup_task_count()
653 struct cgroup *cgrp = of->kn->parent->priv; in of_css() local
665 return rcu_dereference_raw(cgrp->subsys[cft->ss->id]); in of_css()
667 return &cgrp->self; in of_css()
679 #define for_each_css(css, ssid, cgrp) \ argument
682 (cgrp)->subsys[(ssid)], \
694 #define for_each_e_css(css, ssid, cgrp) \ argument
696 if (!((css) = cgroup_e_css_by_mask(cgrp, \
726 #define cgroup_for_each_live_child(child, cgrp) \ argument
727 list_for_each_entry((child), &(cgrp)->self.children, self.sibling) \
734 #define cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) \ argument
735 css_for_each_descendant_pre((d_css), cgroup_css((cgrp), NULL)) \
743 #define cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) \ argument
744 css_for_each_descendant_post((d_css), cgroup_css((cgrp), NULL)) \
776 .dfl_cgrp = &cgrp_dfl_root.cgrp,
819 static void cgroup_update_populated(struct cgroup *cgrp, bool populated) in cgroup_update_populated() argument
827 bool was_populated = cgroup_is_populated(cgrp); in cgroup_update_populated()
830 cgrp->nr_populated_csets += adj; in cgroup_update_populated()
833 cgrp->nr_populated_threaded_children += adj; in cgroup_update_populated()
835 cgrp->nr_populated_domain_children += adj; in cgroup_update_populated()
838 if (was_populated == cgroup_is_populated(cgrp)) in cgroup_update_populated()
841 cgroup1_check_for_release(cgrp); in cgroup_update_populated()
842 TRACE_CGROUP_PATH(notify_populated, cgrp, in cgroup_update_populated()
843 cgroup_is_populated(cgrp)); in cgroup_update_populated()
844 cgroup_file_notify(&cgrp->events_file); in cgroup_update_populated()
846 child = cgrp; in cgroup_update_populated()
847 cgrp = cgroup_parent(cgrp); in cgroup_update_populated()
848 } while (cgrp); in cgroup_update_populated()
866 cgroup_update_populated(link->cgrp, populated); in css_set_update_populated()
978 if (cgroup_parent(link->cgrp)) in put_css_set_locked()
979 cgroup_put(link->cgrp); in put_css_set_locked()
1051 cgrp1 = link1->cgrp; in compare_css_sets()
1052 cgrp2 = link2->cgrp; in compare_css_sets()
1081 struct cgroup *cgrp, in find_existing_css_set() argument
1084 struct cgroup_root *root = cgrp->root; in find_existing_css_set()
1101 template[i] = cgroup_e_css_by_mask(cgrp, ss); in find_existing_css_set()
1113 if (!compare_css_sets(cset, old_cset, cgrp, template)) in find_existing_css_set()
1167 struct cgroup *cgrp) in link_css_set() argument
1173 if (cgroup_on_dfl(cgrp)) in link_css_set()
1174 cset->dfl_cgrp = cgrp; in link_css_set()
1178 link->cgrp = cgrp; in link_css_set()
1184 list_move_tail(&link->cset_link, &cgrp->cset_links); in link_css_set()
1187 if (cgroup_parent(cgrp)) in link_css_set()
1188 cgroup_get_live(cgrp); in link_css_set()
1200 struct cgroup *cgrp) in find_css_set() argument
1215 cset = find_existing_css_set(old_cset, cgrp, template); in find_css_set()
1252 struct cgroup *c = link->cgrp; in find_css_set()
1254 if (c->root == cgrp->root) in find_css_set()
1255 c = cgrp; in find_css_set()
1337 struct cgroup *cgrp = &root->cgrp; in cgroup_destroy_root() local
1342 cgroup_lock_and_drain_offline(&cgrp_dfl_root.cgrp); in cgroup_destroy_root()
1345 BUG_ON(!list_empty(&cgrp->self.children)); in cgroup_destroy_root()
1356 list_for_each_entry_safe(link, tmp_link, &cgrp->cset_links, cset_link) { in cgroup_destroy_root()
1373 cgroup_rstat_exit(cgrp); in cgroup_destroy_root()
1394 res = &root->cgrp; in current_cgns_cgroup_from_root()
1401 struct cgroup *c = link->cgrp; in current_cgns_cgroup_from_root()
1425 res = &root->cgrp; in cset_cgroup_from_root()
1432 struct cgroup *c = link->cgrp; in cset_cgroup_from_root()
1487 static char *cgroup_file_name(struct cgroup *cgrp, const struct cftype *cft, in cgroup_file_name() argument
1493 !(cgrp->root->flags & CGRP_ROOT_NOPREFIX)) { in cgroup_file_name()
1497 dbg, cgroup_on_dfl(cgrp) ? ss->name : ss->legacy_name, in cgroup_file_name()
1584 struct cgroup *cgrp; in cgroup_kn_unlock() local
1587 cgrp = kn->priv; in cgroup_kn_unlock()
1589 cgrp = kn->parent->priv; in cgroup_kn_unlock()
1594 cgroup_put(cgrp); in cgroup_kn_unlock()
1616 struct cgroup *cgrp; in cgroup_kn_lock_live() local
1619 cgrp = kn->priv; in cgroup_kn_lock_live()
1621 cgrp = kn->parent->priv; in cgroup_kn_lock_live()
1629 if (!cgroup_tryget(cgrp)) in cgroup_kn_lock_live()
1634 cgroup_lock_and_drain_offline(cgrp); in cgroup_kn_lock_live()
1638 if (!cgroup_is_dead(cgrp)) in cgroup_kn_lock_live()
1639 return cgrp; in cgroup_kn_lock_live()
1645 static void cgroup_rm_file(struct cgroup *cgrp, const struct cftype *cft) in cgroup_rm_file() argument
1652 struct cgroup_subsys_state *css = cgroup_css(cgrp, cft->ss); in cgroup_rm_file()
1662 kernfs_remove_by_name(cgrp->kn, cgroup_file_name(cgrp, cft, name)); in cgroup_rm_file()
1671 struct cgroup *cgrp = css->cgroup; in css_clear_dir() local
1680 if (cgroup_on_dfl(cgrp)) in css_clear_dir()
1685 cgroup_addrm_files(css, cgrp, cfts, false); in css_clear_dir()
1688 cgroup_addrm_files(css, cgrp, cfts, false); in css_clear_dir()
1700 struct cgroup *cgrp = css->cgroup; in css_populate_dir() local
1704 if ((css->flags & CSS_VISIBLE) || !cgrp->kn) in css_populate_dir()
1708 if (cgroup_on_dfl(cgrp)) in css_populate_dir()
1713 ret = cgroup_addrm_files(&cgrp->self, cgrp, cfts, true); in css_populate_dir()
1718 ret = cgroup_addrm_files(css, cgrp, cfts, true); in css_populate_dir()
1733 cgroup_addrm_files(css, cgrp, cfts, false); in css_populate_dir()
1740 struct cgroup *dcgrp = &dst_root->cgrp; in rebind_subsystems()
1753 if (css_next_child(NULL, cgroup_css(&ss->root->cgrp, ss)) && in rebind_subsystems()
1771 struct cgroup *scgrp = &cgrp_dfl_root.cgrp; in rebind_subsystems()
1784 struct cgroup *scgrp = &src_root->cgrp; in rebind_subsystems()
1941 static void init_cgroup_housekeeping(struct cgroup *cgrp) in init_cgroup_housekeeping() argument
1946 INIT_LIST_HEAD(&cgrp->self.sibling); in init_cgroup_housekeeping()
1947 INIT_LIST_HEAD(&cgrp->self.children); in init_cgroup_housekeeping()
1948 INIT_LIST_HEAD(&cgrp->cset_links); in init_cgroup_housekeeping()
1949 INIT_LIST_HEAD(&cgrp->pidlists); in init_cgroup_housekeeping()
1950 mutex_init(&cgrp->pidlist_mutex); in init_cgroup_housekeeping()
1951 cgrp->self.cgroup = cgrp; in init_cgroup_housekeeping()
1952 cgrp->self.flags |= CSS_ONLINE; in init_cgroup_housekeeping()
1953 cgrp->dom_cgrp = cgrp; in init_cgroup_housekeeping()
1954 cgrp->max_descendants = INT_MAX; in init_cgroup_housekeeping()
1955 cgrp->max_depth = INT_MAX; in init_cgroup_housekeeping()
1956 INIT_LIST_HEAD(&cgrp->rstat_css_list); in init_cgroup_housekeeping()
1957 prev_cputime_init(&cgrp->prev_cputime); in init_cgroup_housekeeping()
1960 INIT_LIST_HEAD(&cgrp->e_csets[ssid]); in init_cgroup_housekeeping()
1962 init_waitqueue_head(&cgrp->offline_waitq); in init_cgroup_housekeeping()
1963 INIT_WORK(&cgrp->release_agent_work, cgroup1_release_agent); in init_cgroup_housekeeping()
1969 struct cgroup *cgrp = &root->cgrp; in init_cgroup_root() local
1973 cgrp->root = root; in init_cgroup_root()
1974 init_cgroup_housekeeping(cgrp); in init_cgroup_root()
1982 set_bit(CGRP_CPUSET_CLONE_CHILDREN, &root->cgrp.flags); in init_cgroup_root()
1988 struct cgroup *root_cgrp = &root->cgrp; in cgroup_setup_root()
2107 struct cgroup *cgrp; in cgroup_do_get_tree() local
2112 cgrp = cset_cgroup_from_root(ctx->ns->root_cset, ctx->root); in cgroup_do_get_tree()
2117 nsdentry = kernfs_node_dentry(cgrp->kn, sb); in cgroup_do_get_tree()
2128 cgroup_put(&ctx->root->cgrp); in cgroup_do_get_tree()
2153 cgroup_get_live(&cgrp_dfl_root.cgrp); in cgroup_get_tree()
2212 if (list_empty(&root->cgrp.self.children) && root != &cgrp_dfl_root && in cgroup_kill_sb()
2213 !percpu_ref_is_dying(&root->cgrp.self.refcnt)) { in cgroup_kill_sb()
2214 cgroup_bpf_offline(&root->cgrp); in cgroup_kill_sb()
2215 percpu_ref_kill(&root->cgrp.self.refcnt); in cgroup_kill_sb()
2217 cgroup_put(&root->cgrp); in cgroup_kill_sb()
2281 int cgroup_path_ns_locked(struct cgroup *cgrp, char *buf, size_t buflen, in cgroup_path_ns_locked() argument
2284 struct cgroup *root = cset_cgroup_from_root(ns->root_cset, cgrp->root); in cgroup_path_ns_locked()
2286 return kernfs_path_from_node(cgrp->kn, root->kn, buf, buflen); in cgroup_path_ns_locked()
2289 int cgroup_path_ns(struct cgroup *cgrp, char *buf, size_t buflen, in cgroup_path_ns() argument
2297 ret = cgroup_path_ns_locked(cgrp, buf, buflen, ns); in cgroup_path_ns()
2322 struct cgroup *cgrp; in task_cgroup_path() local
2332 cgrp = task_cgroup_from_root(task, root); in task_cgroup_path()
2333 ret = cgroup_path_ns_locked(cgrp, buf, buflen, &init_cgroup_ns); in task_cgroup_path()
2913 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_controllers_show() local
2915 cgroup_print_ss_mask(seq, cgroup_control(cgrp)); in cgroup_controllers_show()
2922 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_subtree_control_show() local
2924 cgroup_print_ss_mask(seq, cgrp->subtree_control); in cgroup_subtree_control_show()
2937 static int cgroup_update_dfl_csses(struct cgroup *cgrp) in cgroup_update_dfl_csses() argument
2951 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_update_dfl_csses()
2989 void cgroup_lock_and_drain_offline(struct cgroup *cgrp) in cgroup_lock_and_drain_offline() argument
3000 cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) { in cgroup_lock_and_drain_offline()
3030 static void cgroup_save_control(struct cgroup *cgrp) in cgroup_save_control() argument
3035 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_save_control()
3050 static void cgroup_propagate_control(struct cgroup *cgrp) in cgroup_propagate_control() argument
3055 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_propagate_control()
3071 static void cgroup_restore_control(struct cgroup *cgrp) in cgroup_restore_control() argument
3076 cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) { in cgroup_restore_control()
3086 struct cgroup *cgrp = css->cgroup; in css_visible() local
3088 if (cgroup_control(cgrp) & (1 << ss->id)) in css_visible()
3090 if (!(cgroup_ss_mask(cgrp) & (1 << ss->id))) in css_visible()
3092 return cgroup_on_dfl(cgrp) && ss->implicit_on_dfl; in css_visible()
3108 static int cgroup_apply_control_enable(struct cgroup *cgrp) in cgroup_apply_control_enable() argument
3115 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_apply_control_enable()
3154 static void cgroup_apply_control_disable(struct cgroup *cgrp) in cgroup_apply_control_disable() argument
3161 cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) { in cgroup_apply_control_disable()
3199 static int cgroup_apply_control(struct cgroup *cgrp) in cgroup_apply_control() argument
3203 cgroup_propagate_control(cgrp); in cgroup_apply_control()
3205 ret = cgroup_apply_control_enable(cgrp); in cgroup_apply_control()
3214 ret = cgroup_update_dfl_csses(cgrp); in cgroup_apply_control()
3228 static void cgroup_finalize_control(struct cgroup *cgrp, int ret) in cgroup_finalize_control() argument
3231 cgroup_restore_control(cgrp); in cgroup_finalize_control()
3232 cgroup_propagate_control(cgrp); in cgroup_finalize_control()
3235 cgroup_apply_control_disable(cgrp); in cgroup_finalize_control()
3238 static int cgroup_vet_subtree_control_enable(struct cgroup *cgrp, u16 enable) in cgroup_vet_subtree_control_enable() argument
3247 if (!cgroup_is_valid_domain(cgrp->dom_cgrp)) in cgroup_vet_subtree_control_enable()
3251 if (cgroup_is_mixable(cgrp)) in cgroup_vet_subtree_control_enable()
3256 if (cgroup_is_thread_root(cgrp) || cgroup_is_threaded(cgrp)) in cgroup_vet_subtree_control_enable()
3264 if (cgroup_can_be_thread_root(cgrp) || cgroup_is_threaded(cgrp)) in cgroup_vet_subtree_control_enable()
3272 if (cgroup_has_tasks(cgrp)) in cgroup_vet_subtree_control_enable()
3284 struct cgroup *cgrp, *child; in cgroup_subtree_control_write() local
3317 cgrp = cgroup_kn_lock_live(of->kn, true); in cgroup_subtree_control_write()
3318 if (!cgrp) in cgroup_subtree_control_write()
3323 if (cgrp->subtree_control & (1 << ssid)) { in cgroup_subtree_control_write()
3328 if (!(cgroup_control(cgrp) & (1 << ssid))) { in cgroup_subtree_control_write()
3333 if (!(cgrp->subtree_control & (1 << ssid))) { in cgroup_subtree_control_write()
3339 cgroup_for_each_live_child(child, cgrp) { in cgroup_subtree_control_write()
3353 ret = cgroup_vet_subtree_control_enable(cgrp, enable); in cgroup_subtree_control_write()
3358 cgroup_save_control(cgrp); in cgroup_subtree_control_write()
3360 cgrp->subtree_control |= enable; in cgroup_subtree_control_write()
3361 cgrp->subtree_control &= ~disable; in cgroup_subtree_control_write()
3363 ret = cgroup_apply_control(cgrp); in cgroup_subtree_control_write()
3364 cgroup_finalize_control(cgrp, ret); in cgroup_subtree_control_write()
3368 kernfs_activate(cgrp->kn); in cgroup_subtree_control_write()
3383 static int cgroup_enable_threaded(struct cgroup *cgrp) in cgroup_enable_threaded() argument
3385 struct cgroup *parent = cgroup_parent(cgrp); in cgroup_enable_threaded()
3394 if (cgroup_is_threaded(cgrp)) in cgroup_enable_threaded()
3403 if (cgroup_is_populated(cgrp) || in cgroup_enable_threaded()
3404 cgrp->subtree_control & ~cgrp_dfl_threaded_ss_mask) in cgroup_enable_threaded()
3416 cgroup_save_control(cgrp); in cgroup_enable_threaded()
3418 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) in cgroup_enable_threaded()
3419 if (dsct == cgrp || cgroup_is_threaded(dsct)) in cgroup_enable_threaded()
3422 ret = cgroup_apply_control(cgrp); in cgroup_enable_threaded()
3426 cgroup_finalize_control(cgrp, ret); in cgroup_enable_threaded()
3432 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_type_show() local
3434 if (cgroup_is_threaded(cgrp)) in cgroup_type_show()
3436 else if (!cgroup_is_valid_domain(cgrp)) in cgroup_type_show()
3438 else if (cgroup_is_thread_root(cgrp)) in cgroup_type_show()
3449 struct cgroup *cgrp; in cgroup_type_write() local
3457 cgrp = cgroup_kn_lock_live(of->kn, true); in cgroup_type_write()
3458 if (!cgrp) in cgroup_type_write()
3462 ret = cgroup_enable_threaded(cgrp); in cgroup_type_write()
3470 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_max_descendants_show() local
3471 int descendants = READ_ONCE(cgrp->max_descendants); in cgroup_max_descendants_show()
3484 struct cgroup *cgrp; in cgroup_max_descendants_write() local
3500 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_max_descendants_write()
3501 if (!cgrp) in cgroup_max_descendants_write()
3504 cgrp->max_descendants = descendants; in cgroup_max_descendants_write()
3513 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_max_depth_show() local
3514 int depth = READ_ONCE(cgrp->max_depth); in cgroup_max_depth_show()
3527 struct cgroup *cgrp; in cgroup_max_depth_write() local
3543 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_max_depth_write()
3544 if (!cgrp) in cgroup_max_depth_write()
3547 cgrp->max_depth = depth; in cgroup_max_depth_write()
3556 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_events_show() local
3558 seq_printf(seq, "populated %d\n", cgroup_is_populated(cgrp)); in cgroup_events_show()
3559 seq_printf(seq, "frozen %d\n", test_bit(CGRP_FROZEN, &cgrp->flags)); in cgroup_events_show()
3577 struct cgroup *cgrp, int ssid) in cgroup_extra_stat_show() argument
3586 css = cgroup_tryget_css(cgrp, ss); in cgroup_extra_stat_show()
3597 struct cgroup __maybe_unused *cgrp = seq_css(seq)->cgroup; in cpu_stat_show() local
3602 ret = cgroup_extra_stat_show(seq, cgrp, cpu_cgrp_id); in cpu_stat_show()
3610 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_io_pressure_show() local
3611 struct psi_group *psi = cgroup_ino(cgrp) == 1 ? &psi_system : &cgrp->psi; in cgroup_io_pressure_show()
3617 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_memory_pressure_show() local
3618 struct psi_group *psi = cgroup_ino(cgrp) == 1 ? &psi_system : &cgrp->psi; in cgroup_memory_pressure_show()
3624 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_cpu_pressure_show() local
3625 struct psi_group *psi = cgroup_ino(cgrp) == 1 ? &psi_system : &cgrp->psi; in cgroup_cpu_pressure_show()
3635 struct cgroup *cgrp; in cgroup_pressure_write() local
3638 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_pressure_write()
3639 if (!cgrp) in cgroup_pressure_write()
3642 cgroup_get(cgrp); in cgroup_pressure_write()
3645 psi = cgroup_ino(cgrp) == 1 ? &psi_system : &cgrp->psi; in cgroup_pressure_write()
3648 cgroup_put(cgrp); in cgroup_pressure_write()
3654 cgroup_put(cgrp); in cgroup_pressure_write()
3710 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_freeze_show() local
3712 seq_printf(seq, "%d\n", cgrp->freezer.freeze); in cgroup_freeze_show()
3720 struct cgroup *cgrp; in cgroup_freeze_write() local
3731 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_freeze_write()
3732 if (!cgrp) in cgroup_freeze_write()
3735 cgroup_freeze(cgrp, freeze); in cgroup_freeze_write()
3742 static void __cgroup_kill(struct cgroup *cgrp) in __cgroup_kill() argument
3750 set_bit(CGRP_KILL, &cgrp->flags); in __cgroup_kill()
3753 css_task_iter_start(&cgrp->self, CSS_TASK_ITER_PROCS | CSS_TASK_ITER_THREADED, &it); in __cgroup_kill()
3768 clear_bit(CGRP_KILL, &cgrp->flags); in __cgroup_kill()
3772 static void cgroup_kill(struct cgroup *cgrp) in cgroup_kill() argument
3779 cgroup_for_each_live_descendant_pre(dsct, css, cgrp) in cgroup_kill()
3788 struct cgroup *cgrp; in cgroup_kill_write() local
3797 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_kill_write()
3798 if (!cgrp) in cgroup_kill_write()
3806 if (cgroup_is_threaded(cgrp)) in cgroup_kill_write()
3809 cgroup_kill(cgrp); in cgroup_kill_write()
3856 struct cgroup *cgrp = of->kn->parent->priv; in cgroup_file_write() local
3870 if ((cgrp->root->flags & CGRP_ROOT_NS_DELEGATE) && in cgroup_file_write()
3872 ctx->ns != &init_cgroup_ns && ctx->ns->root_cset->dfl_cgrp == cgrp) in cgroup_file_write()
3885 css = cgroup_css(cgrp, cft->ss); in cgroup_file_write()
3989 static int cgroup_add_file(struct cgroup_subsys_state *css, struct cgroup *cgrp, in cgroup_add_file() argument
4000 kn = __kernfs_create_file(cgrp->kn, cgroup_file_name(cgrp, cft, name), in cgroup_add_file()
4038 struct cgroup *cgrp, struct cftype cfts[], in cgroup_addrm_files() argument
4051 if ((cft->flags & __CFTYPE_ONLY_ON_DFL) && !cgroup_on_dfl(cgrp)) in cgroup_addrm_files()
4053 if ((cft->flags & __CFTYPE_NOT_ON_DFL) && cgroup_on_dfl(cgrp)) in cgroup_addrm_files()
4055 if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgroup_parent(cgrp)) in cgroup_addrm_files()
4057 if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgroup_parent(cgrp)) in cgroup_addrm_files()
4062 ret = cgroup_add_file(css, cgrp, cft); in cgroup_addrm_files()
4071 cgroup_rm_file(cgrp, cft); in cgroup_addrm_files()
4080 struct cgroup *root = &ss->root->cgrp; in cgroup_apply_cftypes()
4088 struct cgroup *cgrp = css->cgroup; in cgroup_apply_cftypes() local
4093 ret = cgroup_addrm_files(css, cgrp, cfts, is_add); in cgroup_apply_cftypes()
4799 struct cgroup *cgrp = seq_css(s)->cgroup; in __cgroup_procs_start() local
4810 css_task_iter_start(&cgrp->self, iter_flags, it); in __cgroup_procs_start()
4814 css_task_iter_start(&cgrp->self, iter_flags, it); in __cgroup_procs_start()
4823 struct cgroup *cgrp = seq_css(s)->cgroup; in cgroup_procs_start() local
4831 if (cgroup_is_threaded(cgrp)) in cgroup_procs_start()
4844 static int cgroup_may_write(const struct cgroup *cgrp, struct super_block *sb) in cgroup_may_write() argument
4851 inode = kernfs_get_inode(sb, cgrp->procs_file.kn); in cgroup_may_write()
5104 struct cgroup *cgrp = css->cgroup; in css_free_rwork_fn() local
5115 cgroup_put(cgrp); in css_free_rwork_fn()
5121 atomic_dec(&cgrp->root->nr_cgrps); in css_free_rwork_fn()
5122 cgroup1_pidlist_destroy_all(cgrp); in css_free_rwork_fn()
5123 cancel_work_sync(&cgrp->release_agent_work); in css_free_rwork_fn()
5125 if (cgroup_parent(cgrp)) { in css_free_rwork_fn()
5132 cgroup_put(cgroup_parent(cgrp)); in css_free_rwork_fn()
5133 kernfs_put(cgrp->kn); in css_free_rwork_fn()
5134 psi_cgroup_free(cgrp); in css_free_rwork_fn()
5135 cgroup_rstat_exit(cgrp); in css_free_rwork_fn()
5136 kfree(cgrp); in css_free_rwork_fn()
5143 cgroup_destroy_root(cgrp->root); in css_free_rwork_fn()
5153 struct cgroup *cgrp = css->cgroup; in css_release_work_fn() local
5163 cgroup_rstat_flush(cgrp); in css_release_work_fn()
5174 TRACE_CGROUP_PATH(release, cgrp); in css_release_work_fn()
5176 cgroup_rstat_flush(cgrp); in css_release_work_fn()
5179 for (tcgrp = cgroup_parent(cgrp); tcgrp; in css_release_work_fn()
5191 if (cgrp->kn) in css_release_work_fn()
5192 RCU_INIT_POINTER(*(void __rcu __force **)&cgrp->kn->priv, in css_release_work_fn()
5212 struct cgroup_subsys *ss, struct cgroup *cgrp) in init_and_link_css() argument
5216 cgroup_get_live(cgrp); in init_and_link_css()
5219 css->cgroup = cgrp; in init_and_link_css()
5228 if (cgroup_parent(cgrp)) { in init_and_link_css()
5229 css->parent = cgroup_css(cgroup_parent(cgrp), ss); in init_and_link_css()
5234 list_add_rcu(&css->rstat_css_node, &cgrp->rstat_css_list); in init_and_link_css()
5236 BUG_ON(cgroup_css(cgrp, ss)); in init_and_link_css()
5288 static struct cgroup_subsys_state *css_create(struct cgroup *cgrp, in css_create() argument
5291 struct cgroup *parent = cgroup_parent(cgrp); in css_create()
5304 init_and_link_css(css, ss, cgrp); in css_create()
5343 struct cgroup *cgrp, *tcgrp; in cgroup_create() local
5349 cgrp = kzalloc(struct_size(cgrp, ancestor_ids, (level + 1)), in cgroup_create()
5351 if (!cgrp) in cgroup_create()
5354 ret = percpu_ref_init(&cgrp->self.refcnt, css_release, 0, GFP_KERNEL); in cgroup_create()
5358 ret = cgroup_rstat_init(cgrp); in cgroup_create()
5363 kn = kernfs_create_dir(parent->kn, name, mode, cgrp); in cgroup_create()
5368 cgrp->kn = kn; in cgroup_create()
5370 init_cgroup_housekeeping(cgrp); in cgroup_create()
5372 cgrp->self.parent = &parent->self; in cgroup_create()
5373 cgrp->root = root; in cgroup_create()
5374 cgrp->level = level; in cgroup_create()
5376 ret = psi_cgroup_alloc(cgrp); in cgroup_create()
5380 ret = cgroup_bpf_inherit(cgrp); in cgroup_create()
5388 cgrp->freezer.e_freeze = parent->freezer.e_freeze; in cgroup_create()
5389 if (cgrp->freezer.e_freeze) { in cgroup_create()
5396 set_bit(CGRP_FREEZE, &cgrp->flags); in cgroup_create()
5397 set_bit(CGRP_FROZEN, &cgrp->flags); in cgroup_create()
5401 for (tcgrp = cgrp; tcgrp; tcgrp = cgroup_parent(tcgrp)) { in cgroup_create()
5402 cgrp->ancestor_ids[tcgrp->level] = cgroup_id(tcgrp); in cgroup_create()
5404 if (tcgrp != cgrp) { in cgroup_create()
5412 if (cgrp->freezer.e_freeze) in cgroup_create()
5419 set_bit(CGRP_NOTIFY_ON_RELEASE, &cgrp->flags); in cgroup_create()
5422 set_bit(CGRP_CPUSET_CLONE_CHILDREN, &cgrp->flags); in cgroup_create()
5424 cgrp->self.serial_nr = css_serial_nr_next++; in cgroup_create()
5427 list_add_tail_rcu(&cgrp->self.sibling, &cgroup_parent(cgrp)->self.children); in cgroup_create()
5435 if (!cgroup_on_dfl(cgrp)) in cgroup_create()
5436 cgrp->subtree_control = cgroup_control(cgrp); in cgroup_create()
5438 cgroup_propagate_control(cgrp); in cgroup_create()
5440 return cgrp; in cgroup_create()
5443 psi_cgroup_free(cgrp); in cgroup_create()
5445 kernfs_remove(cgrp->kn); in cgroup_create()
5447 cgroup_rstat_exit(cgrp); in cgroup_create()
5449 percpu_ref_exit(&cgrp->self.refcnt); in cgroup_create()
5451 kfree(cgrp); in cgroup_create()
5480 struct cgroup *parent, *cgrp; in cgroup_mkdir() local
5496 cgrp = cgroup_create(parent, name, mode); in cgroup_mkdir()
5497 if (IS_ERR(cgrp)) { in cgroup_mkdir()
5498 ret = PTR_ERR(cgrp); in cgroup_mkdir()
5506 kernfs_get(cgrp->kn); in cgroup_mkdir()
5508 ret = cgroup_kn_set_ugid(cgrp->kn); in cgroup_mkdir()
5512 ret = css_populate_dir(&cgrp->self); in cgroup_mkdir()
5516 ret = cgroup_apply_control_enable(cgrp); in cgroup_mkdir()
5520 TRACE_CGROUP_PATH(mkdir, cgrp); in cgroup_mkdir()
5523 kernfs_activate(cgrp->kn); in cgroup_mkdir()
5529 cgroup_destroy_locked(cgrp); in cgroup_mkdir()
5636 static int cgroup_destroy_locked(struct cgroup *cgrp) in cgroup_destroy_locked() argument
5639 struct cgroup *tcgrp, *parent = cgroup_parent(cgrp); in cgroup_destroy_locked()
5650 if (cgroup_is_populated(cgrp)) in cgroup_destroy_locked()
5658 if (css_has_online_children(&cgrp->self)) in cgroup_destroy_locked()
5667 cgrp->self.flags &= ~CSS_ONLINE; in cgroup_destroy_locked()
5670 list_for_each_entry(link, &cgrp->cset_links, cset_link) in cgroup_destroy_locked()
5675 for_each_css(css, ssid, cgrp) in cgroup_destroy_locked()
5679 css_clear_dir(&cgrp->self); in cgroup_destroy_locked()
5680 kernfs_remove(cgrp->kn); in cgroup_destroy_locked()
5682 if (parent && cgroup_is_threaded(cgrp)) in cgroup_destroy_locked()
5686 for (tcgrp = cgroup_parent(cgrp); tcgrp; tcgrp = cgroup_parent(tcgrp)) { in cgroup_destroy_locked()
5693 if (test_bit(CGRP_FROZEN, &cgrp->flags)) in cgroup_destroy_locked()
5700 cgroup_bpf_offline(cgrp); in cgroup_destroy_locked()
5703 percpu_ref_kill(&cgrp->self.refcnt); in cgroup_destroy_locked()
5710 struct cgroup *cgrp; in cgroup_rmdir() local
5713 cgrp = cgroup_kn_lock_live(kn, false); in cgroup_rmdir()
5714 if (!cgrp) in cgroup_rmdir()
5717 ret = cgroup_destroy_locked(cgrp); in cgroup_rmdir()
5719 TRACE_CGROUP_PATH(rmdir, cgrp); in cgroup_rmdir()
5745 css = ss->css_alloc(cgroup_css(&cgrp_dfl_root.cgrp, ss)); in cgroup_init_subsys()
5748 init_and_link_css(css, ss, &cgrp_dfl_root.cgrp); in cgroup_init_subsys()
5799 cgrp_dfl_root.cgrp.self.flags |= CSS_NO_REF; in cgroup_init_early()
5873 &cgrp_dfl_root.cgrp.e_csets[ssid]); in cgroup_init()
5966 struct cgroup *cgrp = NULL; in cgroup_get_from_id() local
5974 cgrp = rcu_dereference(*(void __rcu __force **)&kn->priv); in cgroup_get_from_id()
5975 if (cgrp && !cgroup_tryget(cgrp)) in cgroup_get_from_id()
5976 cgrp = NULL; in cgroup_get_from_id()
5982 return cgrp; in cgroup_get_from_id()
6008 struct cgroup *cgrp; in proc_cgroup_show() local
6025 cgrp = task_cgroup_from_root(tsk, root); in proc_cgroup_show()
6036 if (cgroup_on_dfl(cgrp) || !(tsk->flags & PF_EXITING)) { in proc_cgroup_show()
6037 retval = cgroup_path_ns_locked(cgrp, buf, PATH_MAX, in proc_cgroup_show()
6049 if (cgroup_on_dfl(cgrp) && cgroup_is_dead(cgrp)) in proc_cgroup_show()
6080 struct cgroup *cgrp; in cgroup_get_from_file() local
6086 cgrp = css->cgroup; in cgroup_get_from_file()
6087 if (!cgroup_on_dfl(cgrp)) { in cgroup_get_from_file()
6088 cgroup_put(cgrp); in cgroup_get_from_file()
6092 return cgrp; in cgroup_get_from_file()
6177 kargs->cgrp = dst_cgrp; in cgroup_css_set_fork()
6206 struct cgroup *cgrp = kargs->cgrp; in cgroup_css_set_put_fork() local
6216 if (cgrp) { in cgroup_css_set_put_fork()
6217 cgroup_put(cgrp); in cgroup_css_set_put_fork()
6218 kargs->cgrp = NULL; in cgroup_css_set_put_fork()
6309 if (kargs->cgrp) in cgroup_post_fork()
6310 cgrp_flags = kargs->cgrp->flags; in cgroup_post_fork()
6490 struct cgroup *cgrp; in css_tryget_online_from_dir() local
6504 cgrp = rcu_dereference(*(void __rcu __force **)&kn->priv); in css_tryget_online_from_dir()
6505 if (cgrp) in css_tryget_online_from_dir()
6506 css = cgroup_css(cgrp, ss); in css_tryget_online_from_dir()
6541 struct cgroup *cgrp = ERR_PTR(-ENOENT); in cgroup_get_from_path() local
6543 kn = kernfs_walk_and_get(cgrp_dfl_root.cgrp.kn, path); in cgroup_get_from_path()
6548 cgrp = ERR_PTR(-ENOTDIR); in cgroup_get_from_path()
6554 cgrp = rcu_dereference(*(void __rcu __force **)&kn->priv); in cgroup_get_from_path()
6555 if (!cgrp || !cgroup_tryget(cgrp)) in cgroup_get_from_path()
6556 cgrp = ERR_PTR(-ENOENT); in cgroup_get_from_path()
6563 return cgrp; in cgroup_get_from_path()
6578 struct cgroup *cgrp; in cgroup_get_from_fd() local
6585 cgrp = cgroup_get_from_file(f); in cgroup_get_from_fd()
6587 return cgrp; in cgroup_get_from_fd()
6646 cgroup = &cgrp_dfl_root.cgrp; in cgroup_sk_alloc()
6669 struct cgroup *cgrp = sock_cgroup_ptr(skcd); in cgroup_sk_clone() local
6676 cgroup_get(cgrp); in cgroup_sk_clone()
6677 cgroup_bpf_get(cgrp); in cgroup_sk_clone()
6682 struct cgroup *cgrp = sock_cgroup_ptr(skcd); in cgroup_sk_free() local
6684 cgroup_bpf_put(cgrp); in cgroup_sk_free()
6685 cgroup_put(cgrp); in cgroup_sk_free()