Lines Matching refs:cgrp
167 struct cgroup_root cgrp_dfl_root = { .cgrp.rstat_cpu = &cgrp_dfl_root_rstat_cpu };
241 static int cgroup_apply_control(struct cgroup *cgrp);
242 static void cgroup_finalize_control(struct cgroup *cgrp, int ret);
245 static int cgroup_destroy_locked(struct cgroup *cgrp);
246 static struct cgroup_subsys_state *css_create(struct cgroup *cgrp,
251 struct cgroup *cgrp, struct cftype cfts[],
319 bool cgroup_on_dfl(const struct cgroup *cgrp) in cgroup_on_dfl() argument
321 return cgrp->root == &cgrp_dfl_root; in cgroup_on_dfl()
355 static bool cgroup_has_tasks(struct cgroup *cgrp) in cgroup_has_tasks() argument
357 return cgrp->nr_populated_csets; in cgroup_has_tasks()
360 static bool cgroup_is_threaded(struct cgroup *cgrp) in cgroup_is_threaded() argument
362 return cgrp->dom_cgrp != cgrp; in cgroup_is_threaded()
366 static bool cgroup_is_mixable(struct cgroup *cgrp) in cgroup_is_mixable() argument
373 return !cgroup_parent(cgrp); in cgroup_is_mixable()
377 static bool cgroup_can_be_thread_root(struct cgroup *cgrp) in cgroup_can_be_thread_root() argument
380 if (cgroup_is_mixable(cgrp)) in cgroup_can_be_thread_root()
384 if (cgroup_is_threaded(cgrp)) in cgroup_can_be_thread_root()
388 if (cgrp->nr_populated_domain_children) in cgroup_can_be_thread_root()
392 if (cgrp->subtree_control & ~cgrp_dfl_threaded_ss_mask) in cgroup_can_be_thread_root()
399 static bool cgroup_is_thread_root(struct cgroup *cgrp) in cgroup_is_thread_root() argument
402 if (cgroup_is_threaded(cgrp)) in cgroup_is_thread_root()
406 if (cgrp->nr_threaded_children) in cgroup_is_thread_root()
413 if (cgroup_has_tasks(cgrp) && in cgroup_is_thread_root()
414 (cgrp->subtree_control & cgrp_dfl_threaded_ss_mask)) in cgroup_is_thread_root()
421 static bool cgroup_is_valid_domain(struct cgroup *cgrp) in cgroup_is_valid_domain() argument
424 if (cgroup_is_threaded(cgrp)) in cgroup_is_valid_domain()
428 while ((cgrp = cgroup_parent(cgrp))) { in cgroup_is_valid_domain()
429 if (!cgroup_is_mixable(cgrp) && cgroup_is_thread_root(cgrp)) in cgroup_is_valid_domain()
431 if (cgroup_is_threaded(cgrp)) in cgroup_is_valid_domain()
439 static u16 cgroup_control(struct cgroup *cgrp) in cgroup_control() argument
441 struct cgroup *parent = cgroup_parent(cgrp); in cgroup_control()
442 u16 root_ss_mask = cgrp->root->subsys_mask; in cgroup_control()
448 if (cgroup_is_threaded(cgrp)) in cgroup_control()
453 if (cgroup_on_dfl(cgrp)) in cgroup_control()
460 static u16 cgroup_ss_mask(struct cgroup *cgrp) in cgroup_ss_mask() argument
462 struct cgroup *parent = cgroup_parent(cgrp); in cgroup_ss_mask()
468 if (cgroup_is_threaded(cgrp)) in cgroup_ss_mask()
473 return cgrp->root->subsys_mask; in cgroup_ss_mask()
487 static struct cgroup_subsys_state *cgroup_css(struct cgroup *cgrp, in cgroup_css() argument
491 return rcu_dereference_check(cgrp->subsys[ss->id], in cgroup_css()
494 return &cgrp->self; in cgroup_css()
507 static struct cgroup_subsys_state *cgroup_e_css_by_mask(struct cgroup *cgrp, in cgroup_e_css_by_mask() argument
513 return &cgrp->self; in cgroup_e_css_by_mask()
519 while (!(cgroup_ss_mask(cgrp) & (1 << ss->id))) { in cgroup_e_css_by_mask()
520 cgrp = cgroup_parent(cgrp); in cgroup_e_css_by_mask()
521 if (!cgrp) in cgroup_e_css_by_mask()
525 return cgroup_css(cgrp, ss); in cgroup_e_css_by_mask()
541 struct cgroup_subsys_state *cgroup_e_css(struct cgroup *cgrp, in cgroup_e_css() argument
550 css = cgroup_css(cgrp, ss); in cgroup_e_css()
554 cgrp = cgroup_parent(cgrp); in cgroup_e_css()
555 } while (cgrp); in cgroup_e_css()
571 struct cgroup_subsys_state *cgroup_get_e_css(struct cgroup *cgrp, in cgroup_get_e_css() argument
582 css = cgroup_css(cgrp, ss); in cgroup_get_e_css()
586 cgrp = cgroup_parent(cgrp); in cgroup_get_e_css()
587 } while (cgrp); in cgroup_get_e_css()
597 static void cgroup_get_live(struct cgroup *cgrp) in cgroup_get_live() argument
599 WARN_ON_ONCE(cgroup_is_dead(cgrp)); in cgroup_get_live()
600 cgroup_get(cgrp); in cgroup_get_live()
608 int __cgroup_task_count(const struct cgroup *cgrp) in __cgroup_task_count() argument
615 list_for_each_entry(link, &cgrp->cset_links, cset_link) in __cgroup_task_count()
625 int cgroup_task_count(const struct cgroup *cgrp) in cgroup_task_count() argument
630 count = __cgroup_task_count(cgrp); in cgroup_task_count()
651 struct cgroup *cgrp = kn_priv(of->kn); in of_css() local
663 return rcu_dereference_raw(cgrp->subsys[cft->ss->id]); in of_css()
665 return &cgrp->self; in of_css()
677 #define for_each_css(css, ssid, cgrp) \ argument
680 (cgrp)->subsys[(ssid)], \
709 #define cgroup_for_each_live_child(child, cgrp) \ argument
710 list_for_each_entry((child), &(cgrp)->self.children, self.sibling) \
717 #define cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) \ argument
718 css_for_each_descendant_pre((d_css), cgroup_css((cgrp), NULL)) \
726 #define cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) \ argument
727 css_for_each_descendant_post((d_css), cgroup_css((cgrp), NULL)) \
760 .dfl_cgrp = &cgrp_dfl_root.cgrp,
803 static void cgroup_update_populated(struct cgroup *cgrp, bool populated) in cgroup_update_populated() argument
811 bool was_populated = cgroup_is_populated(cgrp); in cgroup_update_populated()
814 cgrp->nr_populated_csets += adj; in cgroup_update_populated()
817 cgrp->nr_populated_threaded_children += adj; in cgroup_update_populated()
819 cgrp->nr_populated_domain_children += adj; in cgroup_update_populated()
822 if (was_populated == cgroup_is_populated(cgrp)) in cgroup_update_populated()
825 cgroup1_check_for_release(cgrp); in cgroup_update_populated()
826 TRACE_CGROUP_PATH(notify_populated, cgrp, in cgroup_update_populated()
827 cgroup_is_populated(cgrp)); in cgroup_update_populated()
828 cgroup_file_notify(&cgrp->events_file); in cgroup_update_populated()
830 child = cgrp; in cgroup_update_populated()
831 cgrp = cgroup_parent(cgrp); in cgroup_update_populated()
832 } while (cgrp); in cgroup_update_populated()
850 cgroup_update_populated(link->cgrp, populated); in css_set_update_populated()
962 if (cgroup_parent(link->cgrp)) in put_css_set_locked()
963 cgroup_put(link->cgrp); in put_css_set_locked()
1035 cgrp1 = link1->cgrp; in compare_css_sets()
1036 cgrp2 = link2->cgrp; in compare_css_sets()
1065 struct cgroup *cgrp, in find_existing_css_set() argument
1068 struct cgroup_root *root = cgrp->root; in find_existing_css_set()
1085 template[i] = cgroup_e_css_by_mask(cgrp, ss); in find_existing_css_set()
1097 if (!compare_css_sets(cset, old_cset, cgrp, template)) in find_existing_css_set()
1151 struct cgroup *cgrp) in link_css_set() argument
1157 if (cgroup_on_dfl(cgrp)) in link_css_set()
1158 cset->dfl_cgrp = cgrp; in link_css_set()
1162 link->cgrp = cgrp; in link_css_set()
1168 list_move_tail(&link->cset_link, &cgrp->cset_links); in link_css_set()
1171 if (cgroup_parent(cgrp)) in link_css_set()
1172 cgroup_get_live(cgrp); in link_css_set()
1184 struct cgroup *cgrp) in find_css_set() argument
1199 cset = find_existing_css_set(old_cset, cgrp, template); in find_css_set()
1237 struct cgroup *c = link->cgrp; in find_css_set()
1239 if (c->root == cgrp->root) in find_css_set()
1240 c = cgrp; in find_css_set()
1336 struct cgroup *cgrp = &root->cgrp; in cgroup_destroy_root() local
1341 cgroup_lock_and_drain_offline(&cgrp_dfl_root.cgrp); in cgroup_destroy_root()
1344 BUG_ON(!list_empty(&cgrp->self.children)); in cgroup_destroy_root()
1355 list_for_each_entry_safe(link, tmp_link, &cgrp->cset_links, cset_link) { in cgroup_destroy_root()
1374 cgroup_rstat_exit(cgrp); in cgroup_destroy_root()
1388 res_cgroup = &root->cgrp; in __cset_cgroup_from_root()
1396 struct cgroup *c = link->cgrp; in __cset_cgroup_from_root()
1469 return &cgrp_dfl_root.cgrp; in current_cgns_cgroup_dfl()
1526 static char *cgroup_file_name(struct cgroup *cgrp, const struct cftype *cft, in cgroup_file_name() argument
1532 !(cgrp->root->flags & CGRP_ROOT_NOPREFIX)) { in cgroup_file_name()
1536 dbg, cgroup_on_dfl(cgrp) ? ss->name : ss->legacy_name, in cgroup_file_name()
1623 struct cgroup *cgrp; in cgroup_kn_unlock() local
1626 cgrp = kn->priv; in cgroup_kn_unlock()
1628 cgrp = kn_priv(kn); in cgroup_kn_unlock()
1633 cgroup_put(cgrp); in cgroup_kn_unlock()
1655 struct cgroup *cgrp; in cgroup_kn_lock_live() local
1658 cgrp = kn->priv; in cgroup_kn_lock_live()
1660 cgrp = kn_priv(kn); in cgroup_kn_lock_live()
1668 if (!cgroup_tryget(cgrp)) in cgroup_kn_lock_live()
1673 cgroup_lock_and_drain_offline(cgrp); in cgroup_kn_lock_live()
1677 if (!cgroup_is_dead(cgrp)) in cgroup_kn_lock_live()
1678 return cgrp; in cgroup_kn_lock_live()
1684 static void cgroup_rm_file(struct cgroup *cgrp, const struct cftype *cft) in cgroup_rm_file() argument
1691 struct cgroup_subsys_state *css = cgroup_css(cgrp, cft->ss); in cgroup_rm_file()
1701 kernfs_remove_by_name(cgrp->kn, cgroup_file_name(cgrp, cft, name)); in cgroup_rm_file()
1710 struct cgroup *cgrp = css->cgroup; in css_clear_dir() local
1719 if (cgroup_on_dfl(cgrp)) { in css_clear_dir()
1720 cgroup_addrm_files(css, cgrp, in css_clear_dir()
1723 cgroup_addrm_files(css, cgrp, in css_clear_dir()
1726 cgroup_addrm_files(css, cgrp, in css_clear_dir()
1731 cgroup_addrm_files(css, cgrp, cfts, false); in css_clear_dir()
1743 struct cgroup *cgrp = css->cgroup; in css_populate_dir() local
1751 if (cgroup_on_dfl(cgrp)) { in css_populate_dir()
1752 ret = cgroup_addrm_files(css, cgrp, in css_populate_dir()
1758 ret = cgroup_addrm_files(css, cgrp, in css_populate_dir()
1761 cgroup_addrm_files(css, cgrp, in css_populate_dir()
1767 ret = cgroup_addrm_files(css, cgrp, in css_populate_dir()
1774 ret = cgroup_addrm_files(css, cgrp, cfts, true); in css_populate_dir()
1789 cgroup_addrm_files(css, cgrp, cfts, false); in css_populate_dir()
1796 struct cgroup *dcgrp = &dst_root->cgrp; in rebind_subsystems()
1809 if (css_next_child(NULL, cgroup_css(&ss->root->cgrp, ss)) && in rebind_subsystems()
1827 struct cgroup *scgrp = &cgrp_dfl_root.cgrp; in rebind_subsystems()
1840 struct cgroup *scgrp = &src_root->cgrp; in rebind_subsystems()
2053 static void init_cgroup_housekeeping(struct cgroup *cgrp) in init_cgroup_housekeeping() argument
2058 INIT_LIST_HEAD(&cgrp->self.sibling); in init_cgroup_housekeeping()
2059 INIT_LIST_HEAD(&cgrp->self.children); in init_cgroup_housekeeping()
2060 INIT_LIST_HEAD(&cgrp->cset_links); in init_cgroup_housekeeping()
2061 INIT_LIST_HEAD(&cgrp->pidlists); in init_cgroup_housekeeping()
2062 mutex_init(&cgrp->pidlist_mutex); in init_cgroup_housekeeping()
2063 cgrp->self.cgroup = cgrp; in init_cgroup_housekeeping()
2064 cgrp->self.flags |= CSS_ONLINE; in init_cgroup_housekeeping()
2065 cgrp->dom_cgrp = cgrp; in init_cgroup_housekeeping()
2066 cgrp->max_descendants = INT_MAX; in init_cgroup_housekeeping()
2067 cgrp->max_depth = INT_MAX; in init_cgroup_housekeeping()
2068 INIT_LIST_HEAD(&cgrp->rstat_css_list); in init_cgroup_housekeeping()
2069 prev_cputime_init(&cgrp->prev_cputime); in init_cgroup_housekeeping()
2072 INIT_LIST_HEAD(&cgrp->e_csets[ssid]); in init_cgroup_housekeeping()
2074 init_waitqueue_head(&cgrp->offline_waitq); in init_cgroup_housekeeping()
2075 INIT_WORK(&cgrp->release_agent_work, cgroup1_release_agent); in init_cgroup_housekeeping()
2081 struct cgroup *cgrp = &root->cgrp; in init_cgroup_root() local
2085 cgrp->root = root; in init_cgroup_root()
2086 init_cgroup_housekeeping(cgrp); in init_cgroup_root()
2095 set_bit(CGRP_CPUSET_CLONE_CHILDREN, &root->cgrp.flags); in init_cgroup_root()
2101 struct cgroup *root_cgrp = &root->cgrp; in cgroup_setup_root()
2223 struct cgroup *cgrp; in cgroup_do_get_tree() local
2228 cgrp = cset_cgroup_from_root(ctx->ns->root_cset, ctx->root); in cgroup_do_get_tree()
2233 nsdentry = kernfs_node_dentry(cgrp->kn, sb); in cgroup_do_get_tree()
2244 cgroup_put(&ctx->root->cgrp); in cgroup_do_get_tree()
2269 cgroup_get_live(&cgrp_dfl_root.cgrp); in cgroup_get_tree()
2332 if (list_empty(&root->cgrp.self.children) && root != &cgrp_dfl_root && in cgroup_kill_sb()
2333 !percpu_ref_is_dying(&root->cgrp.self.refcnt)) in cgroup_kill_sb()
2334 percpu_ref_kill(&root->cgrp.self.refcnt); in cgroup_kill_sb()
2335 cgroup_put(&root->cgrp); in cgroup_kill_sb()
2428 int cgroup_path_ns_locked(struct cgroup *cgrp, char *buf, size_t buflen, in cgroup_path_ns_locked() argument
2431 struct cgroup *root = cset_cgroup_from_root(ns->root_cset, cgrp->root); in cgroup_path_ns_locked()
2433 return kernfs_path_from_node(cgrp->kn, root->kn, buf, buflen); in cgroup_path_ns_locked()
2436 int cgroup_path_ns(struct cgroup *cgrp, char *buf, size_t buflen, in cgroup_path_ns() argument
2444 ret = cgroup_path_ns_locked(cgrp, buf, buflen, ns); in cgroup_path_ns()
3054 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_controllers_show() local
3056 cgroup_print_ss_mask(seq, cgroup_control(cgrp)); in cgroup_controllers_show()
3063 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_subtree_control_show() local
3065 cgroup_print_ss_mask(seq, cgrp->subtree_control); in cgroup_subtree_control_show()
3078 static int cgroup_update_dfl_csses(struct cgroup *cgrp) in cgroup_update_dfl_csses() argument
3091 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_update_dfl_csses()
3100 if (dsct == cgrp) in cgroup_update_dfl_csses()
3148 void cgroup_lock_and_drain_offline(struct cgroup *cgrp) in cgroup_lock_and_drain_offline() argument
3159 cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) { in cgroup_lock_and_drain_offline()
3189 static void cgroup_save_control(struct cgroup *cgrp) in cgroup_save_control() argument
3194 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_save_control()
3209 static void cgroup_propagate_control(struct cgroup *cgrp) in cgroup_propagate_control() argument
3214 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_propagate_control()
3230 static void cgroup_restore_control(struct cgroup *cgrp) in cgroup_restore_control() argument
3235 cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) { in cgroup_restore_control()
3245 struct cgroup *cgrp = css->cgroup; in css_visible() local
3247 if (cgroup_control(cgrp) & (1 << ss->id)) in css_visible()
3249 if (!(cgroup_ss_mask(cgrp) & (1 << ss->id))) in css_visible()
3251 return cgroup_on_dfl(cgrp) && ss->implicit_on_dfl; in css_visible()
3267 static int cgroup_apply_control_enable(struct cgroup *cgrp) in cgroup_apply_control_enable() argument
3274 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_apply_control_enable()
3313 static void cgroup_apply_control_disable(struct cgroup *cgrp) in cgroup_apply_control_disable() argument
3320 cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) { in cgroup_apply_control_disable()
3358 static int cgroup_apply_control(struct cgroup *cgrp) in cgroup_apply_control() argument
3362 cgroup_propagate_control(cgrp); in cgroup_apply_control()
3364 ret = cgroup_apply_control_enable(cgrp); in cgroup_apply_control()
3373 return cgroup_update_dfl_csses(cgrp); in cgroup_apply_control()
3383 static void cgroup_finalize_control(struct cgroup *cgrp, int ret) in cgroup_finalize_control() argument
3386 cgroup_restore_control(cgrp); in cgroup_finalize_control()
3387 cgroup_propagate_control(cgrp); in cgroup_finalize_control()
3390 cgroup_apply_control_disable(cgrp); in cgroup_finalize_control()
3393 static int cgroup_vet_subtree_control_enable(struct cgroup *cgrp, u16 enable) in cgroup_vet_subtree_control_enable() argument
3402 if (!cgroup_is_valid_domain(cgrp->dom_cgrp)) in cgroup_vet_subtree_control_enable()
3406 if (cgroup_is_mixable(cgrp)) in cgroup_vet_subtree_control_enable()
3411 if (cgroup_is_thread_root(cgrp) || cgroup_is_threaded(cgrp)) in cgroup_vet_subtree_control_enable()
3419 if (cgroup_can_be_thread_root(cgrp) || cgroup_is_threaded(cgrp)) in cgroup_vet_subtree_control_enable()
3427 if (cgroup_has_tasks(cgrp)) in cgroup_vet_subtree_control_enable()
3439 struct cgroup *cgrp, *child; in cgroup_subtree_control_write() local
3472 cgrp = cgroup_kn_lock_live(of->kn, true); in cgroup_subtree_control_write()
3473 if (!cgrp) in cgroup_subtree_control_write()
3478 if (cgrp->subtree_control & (1 << ssid)) { in cgroup_subtree_control_write()
3483 if (!(cgroup_control(cgrp) & (1 << ssid))) { in cgroup_subtree_control_write()
3488 if (!(cgrp->subtree_control & (1 << ssid))) { in cgroup_subtree_control_write()
3494 cgroup_for_each_live_child(child, cgrp) { in cgroup_subtree_control_write()
3508 ret = cgroup_vet_subtree_control_enable(cgrp, enable); in cgroup_subtree_control_write()
3513 cgroup_save_control(cgrp); in cgroup_subtree_control_write()
3515 cgrp->subtree_control |= enable; in cgroup_subtree_control_write()
3516 cgrp->subtree_control &= ~disable; in cgroup_subtree_control_write()
3518 ret = cgroup_apply_control(cgrp); in cgroup_subtree_control_write()
3519 cgroup_finalize_control(cgrp, ret); in cgroup_subtree_control_write()
3523 kernfs_activate(cgrp->kn); in cgroup_subtree_control_write()
3538 static int cgroup_enable_threaded(struct cgroup *cgrp) in cgroup_enable_threaded() argument
3540 struct cgroup *parent = cgroup_parent(cgrp); in cgroup_enable_threaded()
3549 if (cgroup_is_threaded(cgrp)) in cgroup_enable_threaded()
3558 if (cgroup_is_populated(cgrp) || in cgroup_enable_threaded()
3559 cgrp->subtree_control & ~cgrp_dfl_threaded_ss_mask) in cgroup_enable_threaded()
3571 cgroup_save_control(cgrp); in cgroup_enable_threaded()
3573 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) in cgroup_enable_threaded()
3574 if (dsct == cgrp || cgroup_is_threaded(dsct)) in cgroup_enable_threaded()
3577 ret = cgroup_apply_control(cgrp); in cgroup_enable_threaded()
3581 cgroup_finalize_control(cgrp, ret); in cgroup_enable_threaded()
3587 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_type_show() local
3589 if (cgroup_is_threaded(cgrp)) in cgroup_type_show()
3591 else if (!cgroup_is_valid_domain(cgrp)) in cgroup_type_show()
3593 else if (cgroup_is_thread_root(cgrp)) in cgroup_type_show()
3604 struct cgroup *cgrp; in cgroup_type_write() local
3612 cgrp = cgroup_kn_lock_live(of->kn, true); in cgroup_type_write()
3613 if (!cgrp) in cgroup_type_write()
3617 ret = cgroup_enable_threaded(cgrp); in cgroup_type_write()
3625 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_max_descendants_show() local
3626 int descendants = READ_ONCE(cgrp->max_descendants); in cgroup_max_descendants_show()
3639 struct cgroup *cgrp; in cgroup_max_descendants_write() local
3655 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_max_descendants_write()
3656 if (!cgrp) in cgroup_max_descendants_write()
3659 cgrp->max_descendants = descendants; in cgroup_max_descendants_write()
3668 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_max_depth_show() local
3669 int depth = READ_ONCE(cgrp->max_depth); in cgroup_max_depth_show()
3682 struct cgroup *cgrp; in cgroup_max_depth_write() local
3698 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_max_depth_write()
3699 if (!cgrp) in cgroup_max_depth_write()
3702 cgrp->max_depth = depth; in cgroup_max_depth_write()
3711 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_events_show() local
3713 seq_printf(seq, "populated %d\n", cgroup_is_populated(cgrp)); in cgroup_events_show()
3714 seq_printf(seq, "frozen %d\n", test_bit(CGRP_FROZEN, &cgrp->flags)); in cgroup_events_show()
3768 static struct cgroup_subsys_state *cgroup_tryget_css(struct cgroup *cgrp, in cgroup_tryget_css() argument
3774 css = cgroup_css(cgrp, ss); in cgroup_tryget_css()
3784 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_extra_stat_show() local
3792 css = cgroup_tryget_css(cgrp, ss); in cgroup_extra_stat_show()
3802 struct cgroup *cgrp, int ssid) in cgroup_local_stat_show() argument
3811 css = cgroup_tryget_css(cgrp, ss); in cgroup_local_stat_show()
3834 struct cgroup __maybe_unused *cgrp = seq_css(seq)->cgroup; in cpu_local_stat_show() local
3838 ret = cgroup_local_stat_show(seq, cgrp, cpu_cgrp_id); in cpu_local_stat_show()
3846 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_io_pressure_show() local
3847 struct psi_group *psi = cgroup_psi(cgrp); in cgroup_io_pressure_show()
3853 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_memory_pressure_show() local
3854 struct psi_group *psi = cgroup_psi(cgrp); in cgroup_memory_pressure_show()
3860 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_cpu_pressure_show() local
3861 struct psi_group *psi = cgroup_psi(cgrp); in cgroup_cpu_pressure_show()
3871 struct cgroup *cgrp; in pressure_write() local
3874 cgrp = cgroup_kn_lock_live(of->kn, false); in pressure_write()
3875 if (!cgrp) in pressure_write()
3878 cgroup_get(cgrp); in pressure_write()
3883 cgroup_put(cgrp); in pressure_write()
3887 psi = cgroup_psi(cgrp); in pressure_write()
3890 cgroup_put(cgrp); in pressure_write()
3895 cgroup_put(cgrp); in pressure_write()
3924 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_irq_pressure_show() local
3925 struct psi_group *psi = cgroup_psi(cgrp); in cgroup_irq_pressure_show()
3940 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_pressure_show() local
3941 struct psi_group *psi = cgroup_psi(cgrp); in cgroup_pressure_show()
3954 struct cgroup *cgrp; in cgroup_pressure_write() local
3964 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_pressure_write()
3965 if (!cgrp) in cgroup_pressure_write()
3968 psi = cgroup_psi(cgrp); in cgroup_pressure_write()
3974 cgroup_file_show(&cgrp->psi_files[i], enable); in cgroup_pressure_write()
4019 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_freeze_show() local
4021 seq_printf(seq, "%d\n", cgrp->freezer.freeze); in cgroup_freeze_show()
4029 struct cgroup *cgrp; in cgroup_freeze_write() local
4040 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_freeze_write()
4041 if (!cgrp) in cgroup_freeze_write()
4044 cgroup_freeze(cgrp, freeze); in cgroup_freeze_write()
4051 static void __cgroup_kill(struct cgroup *cgrp) in __cgroup_kill() argument
4059 cgrp->kill_seq++; in __cgroup_kill()
4062 css_task_iter_start(&cgrp->self, CSS_TASK_ITER_PROCS | CSS_TASK_ITER_THREADED, &it); in __cgroup_kill()
4077 static void cgroup_kill(struct cgroup *cgrp) in cgroup_kill() argument
4084 cgroup_for_each_live_descendant_pre(dsct, css, cgrp) in cgroup_kill()
4093 struct cgroup *cgrp; in cgroup_kill_write() local
4102 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_kill_write()
4103 if (!cgrp) in cgroup_kill_write()
4111 if (cgroup_is_threaded(cgrp)) in cgroup_kill_write()
4114 cgroup_kill(cgrp); in cgroup_kill_write()
4161 struct cgroup *cgrp = kn_priv(of->kn); in cgroup_file_write() local
4175 if ((cgrp->root->flags & CGRP_ROOT_NS_DELEGATE) && in cgroup_file_write()
4177 ctx->ns != &init_cgroup_ns && ctx->ns->root_cset->dfl_cgrp == cgrp) in cgroup_file_write()
4190 css = cgroup_css(cgrp, cft->ss); in cgroup_file_write()
4280 static int cgroup_add_file(struct cgroup_subsys_state *css, struct cgroup *cgrp, in cgroup_add_file() argument
4290 kn = __kernfs_create_file(cgrp->kn, cgroup_file_name(cgrp, cft, name), in cgroup_add_file()
4322 struct cgroup *cgrp, struct cftype cfts[], in cgroup_addrm_files() argument
4333 if ((cft->flags & __CFTYPE_ONLY_ON_DFL) && !cgroup_on_dfl(cgrp)) in cgroup_addrm_files()
4335 if ((cft->flags & __CFTYPE_NOT_ON_DFL) && cgroup_on_dfl(cgrp)) in cgroup_addrm_files()
4337 if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgroup_parent(cgrp)) in cgroup_addrm_files()
4339 if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgroup_parent(cgrp)) in cgroup_addrm_files()
4344 ret = cgroup_add_file(css, cgrp, cft); in cgroup_addrm_files()
4353 cgroup_rm_file(cgrp, cft); in cgroup_addrm_files()
4362 struct cgroup *root = &ss->root->cgrp; in cgroup_apply_cftypes()
4370 struct cgroup *cgrp = css->cgroup; in cgroup_apply_cftypes() local
4375 ret = cgroup_addrm_files(css, cgrp, cfts, is_add); in cgroup_apply_cftypes()
5116 struct cgroup *cgrp = seq_css(s)->cgroup; in __cgroup_procs_start() local
5127 css_task_iter_start(&cgrp->self, iter_flags, it); in __cgroup_procs_start()
5131 css_task_iter_start(&cgrp->self, iter_flags, it); in __cgroup_procs_start()
5140 struct cgroup *cgrp = seq_css(s)->cgroup; in cgroup_procs_start() local
5148 if (cgroup_is_threaded(cgrp)) in cgroup_procs_start()
5161 static int cgroup_may_write(const struct cgroup *cgrp, struct super_block *sb) in cgroup_may_write() argument
5168 inode = kernfs_get_inode(sb, cgrp->procs_file.kn); in cgroup_may_write()
5444 struct cgroup *cgrp = css->cgroup; in css_free_rwork_fn() local
5455 cgroup_put(cgrp); in css_free_rwork_fn()
5461 atomic_dec(&cgrp->root->nr_cgrps); in css_free_rwork_fn()
5462 if (!cgroup_on_dfl(cgrp)) in css_free_rwork_fn()
5463 cgroup1_pidlist_destroy_all(cgrp); in css_free_rwork_fn()
5464 cancel_work_sync(&cgrp->release_agent_work); in css_free_rwork_fn()
5465 bpf_cgrp_storage_free(cgrp); in css_free_rwork_fn()
5467 if (cgroup_parent(cgrp)) { in css_free_rwork_fn()
5474 cgroup_put(cgroup_parent(cgrp)); in css_free_rwork_fn()
5475 kernfs_put(cgrp->kn); in css_free_rwork_fn()
5476 psi_cgroup_free(cgrp); in css_free_rwork_fn()
5477 cgroup_rstat_exit(cgrp); in css_free_rwork_fn()
5478 kfree(cgrp); in css_free_rwork_fn()
5485 cgroup_destroy_root(cgrp->root); in css_free_rwork_fn()
5495 struct cgroup *cgrp = css->cgroup; in css_release_work_fn() local
5507 cgroup_rstat_flush(cgrp); in css_release_work_fn()
5515 cgrp->nr_dying_subsys[ss->id]--; in css_release_work_fn()
5524 parent_cgrp = cgroup_parent(cgrp); in css_release_work_fn()
5533 TRACE_CGROUP_PATH(release, cgrp); in css_release_work_fn()
5535 cgroup_rstat_flush(cgrp); in css_release_work_fn()
5538 for (tcgrp = cgroup_parent(cgrp); tcgrp; in css_release_work_fn()
5550 if (cgrp->kn) in css_release_work_fn()
5551 RCU_INIT_POINTER(*(void __rcu __force **)&cgrp->kn->priv, in css_release_work_fn()
5571 struct cgroup_subsys *ss, struct cgroup *cgrp) in init_and_link_css() argument
5575 cgroup_get_live(cgrp); in init_and_link_css()
5578 css->cgroup = cgrp; in init_and_link_css()
5587 if (cgroup_parent(cgrp)) { in init_and_link_css()
5588 css->parent = cgroup_css(cgroup_parent(cgrp), ss); in init_and_link_css()
5593 list_add_rcu(&css->rstat_css_node, &cgrp->rstat_css_list); in init_and_link_css()
5595 BUG_ON(cgroup_css(cgrp, ss)); in init_and_link_css()
5660 static struct cgroup_subsys_state *css_create(struct cgroup *cgrp, in css_create() argument
5663 struct cgroup *parent = cgroup_parent(cgrp); in css_create()
5676 init_and_link_css(css, ss, cgrp); in css_create()
5714 struct cgroup *cgrp, *tcgrp; in cgroup_create() local
5720 cgrp = kzalloc(struct_size(cgrp, ancestors, (level + 1)), GFP_KERNEL); in cgroup_create()
5721 if (!cgrp) in cgroup_create()
5724 ret = percpu_ref_init(&cgrp->self.refcnt, css_release, 0, GFP_KERNEL); in cgroup_create()
5728 ret = cgroup_rstat_init(cgrp); in cgroup_create()
5735 cgrp, NULL); in cgroup_create()
5740 cgrp->kn = kn; in cgroup_create()
5742 init_cgroup_housekeeping(cgrp); in cgroup_create()
5744 cgrp->self.parent = &parent->self; in cgroup_create()
5745 cgrp->root = root; in cgroup_create()
5746 cgrp->level = level; in cgroup_create()
5748 ret = psi_cgroup_alloc(cgrp); in cgroup_create()
5752 if (cgrp->root == &cgrp_dfl_root) { in cgroup_create()
5753 ret = cgroup_bpf_inherit(cgrp); in cgroup_create()
5762 cgrp->freezer.e_freeze = parent->freezer.e_freeze; in cgroup_create()
5763 if (cgrp->freezer.e_freeze) { in cgroup_create()
5770 set_bit(CGRP_FREEZE, &cgrp->flags); in cgroup_create()
5771 set_bit(CGRP_FROZEN, &cgrp->flags); in cgroup_create()
5775 for (tcgrp = cgrp; tcgrp; tcgrp = cgroup_parent(tcgrp)) { in cgroup_create()
5776 cgrp->ancestors[tcgrp->level] = tcgrp; in cgroup_create()
5778 if (tcgrp != cgrp) { in cgroup_create()
5786 if (cgrp->freezer.e_freeze) in cgroup_create()
5793 set_bit(CGRP_NOTIFY_ON_RELEASE, &cgrp->flags); in cgroup_create()
5796 set_bit(CGRP_CPUSET_CLONE_CHILDREN, &cgrp->flags); in cgroup_create()
5798 cgrp->self.serial_nr = css_serial_nr_next++; in cgroup_create()
5801 list_add_tail_rcu(&cgrp->self.sibling, &cgroup_parent(cgrp)->self.children); in cgroup_create()
5809 if (!cgroup_on_dfl(cgrp)) in cgroup_create()
5810 cgrp->subtree_control = cgroup_control(cgrp); in cgroup_create()
5812 cgroup_propagate_control(cgrp); in cgroup_create()
5814 return cgrp; in cgroup_create()
5817 psi_cgroup_free(cgrp); in cgroup_create()
5819 kernfs_remove(cgrp->kn); in cgroup_create()
5821 cgroup_rstat_exit(cgrp); in cgroup_create()
5823 percpu_ref_exit(&cgrp->self.refcnt); in cgroup_create()
5825 kfree(cgrp); in cgroup_create()
5854 struct cgroup *parent, *cgrp; in cgroup_mkdir() local
5870 cgrp = cgroup_create(parent, name, mode); in cgroup_mkdir()
5871 if (IS_ERR(cgrp)) { in cgroup_mkdir()
5872 ret = PTR_ERR(cgrp); in cgroup_mkdir()
5880 kernfs_get(cgrp->kn); in cgroup_mkdir()
5882 ret = css_populate_dir(&cgrp->self); in cgroup_mkdir()
5886 ret = cgroup_apply_control_enable(cgrp); in cgroup_mkdir()
5890 TRACE_CGROUP_PATH(mkdir, cgrp); in cgroup_mkdir()
5893 kernfs_activate(cgrp->kn); in cgroup_mkdir()
5899 cgroup_destroy_locked(cgrp); in cgroup_mkdir()
6012 static int cgroup_destroy_locked(struct cgroup *cgrp) in cgroup_destroy_locked() argument
6015 struct cgroup *tcgrp, *parent = cgroup_parent(cgrp); in cgroup_destroy_locked()
6026 if (cgroup_is_populated(cgrp)) in cgroup_destroy_locked()
6034 if (css_has_online_children(&cgrp->self)) in cgroup_destroy_locked()
6043 cgrp->self.flags &= ~CSS_ONLINE; in cgroup_destroy_locked()
6046 list_for_each_entry(link, &cgrp->cset_links, cset_link) in cgroup_destroy_locked()
6051 for_each_css(css, ssid, cgrp) in cgroup_destroy_locked()
6055 css_clear_dir(&cgrp->self); in cgroup_destroy_locked()
6056 kernfs_remove(cgrp->kn); in cgroup_destroy_locked()
6058 if (cgroup_is_threaded(cgrp)) in cgroup_destroy_locked()
6069 if (test_bit(CGRP_FROZEN, &cgrp->flags)) in cgroup_destroy_locked()
6076 if (cgrp->root == &cgrp_dfl_root) in cgroup_destroy_locked()
6077 cgroup_bpf_offline(cgrp); in cgroup_destroy_locked()
6080 percpu_ref_kill(&cgrp->self.refcnt); in cgroup_destroy_locked()
6087 struct cgroup *cgrp; in cgroup_rmdir() local
6090 cgrp = cgroup_kn_lock_live(kn, false); in cgroup_rmdir()
6091 if (!cgrp) in cgroup_rmdir()
6094 ret = cgroup_destroy_locked(cgrp); in cgroup_rmdir()
6096 TRACE_CGROUP_PATH(rmdir, cgrp); in cgroup_rmdir()
6125 init_and_link_css(css, ss, &cgrp_dfl_root.cgrp); in cgroup_init_subsys()
6176 cgrp_dfl_root.cgrp.self.flags |= CSS_NO_REF; in cgroup_init_early()
6245 &cgrp_dfl_root.cgrp.e_csets[ssid]); in cgroup_init()
6339 struct cgroup *cgrp, *root_cgrp; in cgroup_get_from_id() local
6352 cgrp = rcu_dereference(*(void __rcu __force **)&kn->priv); in cgroup_get_from_id()
6353 if (cgrp && !cgroup_tryget(cgrp)) in cgroup_get_from_id()
6354 cgrp = NULL; in cgroup_get_from_id()
6359 if (!cgrp) in cgroup_get_from_id()
6363 if (!cgroup_is_descendant(cgrp, root_cgrp)) { in cgroup_get_from_id()
6364 cgroup_put(cgrp); in cgroup_get_from_id()
6368 return cgrp; in cgroup_get_from_id()
6394 struct cgroup *cgrp; in proc_cgroup_show() local
6400 cgrp = task_cgroup_from_root(tsk, root); in proc_cgroup_show()
6402 if (!cgrp) in proc_cgroup_show()
6424 if (cgroup_on_dfl(cgrp) || !(tsk->flags & PF_EXITING)) { in proc_cgroup_show()
6425 retval = cgroup_path_ns_locked(cgrp, buf, PATH_MAX, in proc_cgroup_show()
6437 if (cgroup_on_dfl(cgrp) && cgroup_is_dead(cgrp)) in proc_cgroup_show()
6491 struct cgroup *cgrp = cgroup_v1v2_get_from_file(f); in cgroup_get_from_file() local
6493 if (IS_ERR(cgrp)) in cgroup_get_from_file()
6494 return ERR_CAST(cgrp); in cgroup_get_from_file()
6496 if (!cgroup_on_dfl(cgrp)) { in cgroup_get_from_file()
6497 cgroup_put(cgrp); in cgroup_get_from_file()
6501 return cgrp; in cgroup_get_from_file()
6536 if (kargs->cgrp) in cgroup_css_set_fork()
6537 kargs->kill_seq = kargs->cgrp->kill_seq; in cgroup_css_set_fork()
6602 kargs->cgrp = dst_cgrp; in cgroup_css_set_fork()
6626 struct cgroup *cgrp = kargs->cgrp; in cgroup_css_set_put_fork() local
6638 if (cgrp) { in cgroup_css_set_put_fork()
6639 cgroup_put(cgrp); in cgroup_css_set_put_fork()
6640 kargs->cgrp = NULL; in cgroup_css_set_put_fork()
6734 if (kargs->cgrp) { in cgroup_post_fork()
6735 cgrp_flags = kargs->cgrp->flags; in cgroup_post_fork()
6736 cgrp_kill_seq = kargs->cgrp->kill_seq; in cgroup_post_fork()
6931 struct cgroup *cgrp; in css_tryget_online_from_dir() local
6945 cgrp = rcu_dereference(*(void __rcu __force **)&kn->priv); in css_tryget_online_from_dir()
6946 if (cgrp) in css_tryget_online_from_dir()
6947 css = cgroup_css(cgrp, ss); in css_tryget_online_from_dir()
6982 struct cgroup *cgrp = ERR_PTR(-ENOENT); in cgroup_get_from_path() local
6991 cgrp = ERR_PTR(-ENOTDIR); in cgroup_get_from_path()
6997 cgrp = rcu_dereference(*(void __rcu __force **)&kn->priv); in cgroup_get_from_path()
6998 if (!cgrp || !cgroup_tryget(cgrp)) in cgroup_get_from_path()
6999 cgrp = ERR_PTR(-ENOENT); in cgroup_get_from_path()
7006 return cgrp; in cgroup_get_from_path()
7035 struct cgroup *cgrp = cgroup_v1v2_get_from_fd(fd); in cgroup_get_from_fd() local
7037 if (IS_ERR(cgrp)) in cgroup_get_from_fd()
7038 return ERR_CAST(cgrp); in cgroup_get_from_fd()
7040 if (!cgroup_on_dfl(cgrp)) { in cgroup_get_from_fd()
7041 cgroup_put(cgrp); in cgroup_get_from_fd()
7044 return cgrp; in cgroup_get_from_fd()
7103 cgroup = &cgrp_dfl_root.cgrp; in cgroup_sk_alloc()
7126 struct cgroup *cgrp = sock_cgroup_ptr(skcd); in cgroup_sk_clone() local
7133 cgroup_get(cgrp); in cgroup_sk_clone()
7134 cgroup_bpf_get(cgrp); in cgroup_sk_clone()
7139 struct cgroup *cgrp = sock_cgroup_ptr(skcd); in cgroup_sk_free() local
7141 cgroup_bpf_put(cgrp); in cgroup_sk_free()
7142 cgroup_put(cgrp); in cgroup_sk_free()