Lines Matching refs:cgrp
157 struct cgroup_root cgrp_dfl_root = { .cgrp.rstat_cpu = &cgrp_dfl_root_rstat_cpu };
212 static int cgroup_apply_control(struct cgroup *cgrp);
213 static void cgroup_finalize_control(struct cgroup *cgrp, int ret);
216 static int cgroup_destroy_locked(struct cgroup *cgrp);
217 static struct cgroup_subsys_state *css_create(struct cgroup *cgrp,
222 struct cgroup *cgrp, struct cftype cfts[],
291 bool cgroup_on_dfl(const struct cgroup *cgrp) in cgroup_on_dfl() argument
293 return cgrp->root == &cgrp_dfl_root; in cgroup_on_dfl()
327 static bool cgroup_has_tasks(struct cgroup *cgrp) in cgroup_has_tasks() argument
329 return cgrp->nr_populated_csets; in cgroup_has_tasks()
332 bool cgroup_is_threaded(struct cgroup *cgrp) in cgroup_is_threaded() argument
334 return cgrp->dom_cgrp != cgrp; in cgroup_is_threaded()
338 static bool cgroup_is_mixable(struct cgroup *cgrp) in cgroup_is_mixable() argument
345 return !cgroup_parent(cgrp); in cgroup_is_mixable()
349 static bool cgroup_can_be_thread_root(struct cgroup *cgrp) in cgroup_can_be_thread_root() argument
352 if (cgroup_is_mixable(cgrp)) in cgroup_can_be_thread_root()
356 if (cgroup_is_threaded(cgrp)) in cgroup_can_be_thread_root()
360 if (cgrp->nr_populated_domain_children) in cgroup_can_be_thread_root()
364 if (cgrp->subtree_control & ~cgrp_dfl_threaded_ss_mask) in cgroup_can_be_thread_root()
371 bool cgroup_is_thread_root(struct cgroup *cgrp) in cgroup_is_thread_root() argument
374 if (cgroup_is_threaded(cgrp)) in cgroup_is_thread_root()
378 if (cgrp->nr_threaded_children) in cgroup_is_thread_root()
385 if (cgroup_has_tasks(cgrp) && in cgroup_is_thread_root()
386 (cgrp->subtree_control & cgrp_dfl_threaded_ss_mask)) in cgroup_is_thread_root()
393 static bool cgroup_is_valid_domain(struct cgroup *cgrp) in cgroup_is_valid_domain() argument
396 if (cgroup_is_threaded(cgrp)) in cgroup_is_valid_domain()
400 while ((cgrp = cgroup_parent(cgrp))) { in cgroup_is_valid_domain()
401 if (!cgroup_is_mixable(cgrp) && cgroup_is_thread_root(cgrp)) in cgroup_is_valid_domain()
403 if (cgroup_is_threaded(cgrp)) in cgroup_is_valid_domain()
411 static u16 cgroup_control(struct cgroup *cgrp) in cgroup_control() argument
413 struct cgroup *parent = cgroup_parent(cgrp); in cgroup_control()
414 u16 root_ss_mask = cgrp->root->subsys_mask; in cgroup_control()
420 if (cgroup_is_threaded(cgrp)) in cgroup_control()
425 if (cgroup_on_dfl(cgrp)) in cgroup_control()
432 static u16 cgroup_ss_mask(struct cgroup *cgrp) in cgroup_ss_mask() argument
434 struct cgroup *parent = cgroup_parent(cgrp); in cgroup_ss_mask()
440 if (cgroup_is_threaded(cgrp)) in cgroup_ss_mask()
445 return cgrp->root->subsys_mask; in cgroup_ss_mask()
459 static struct cgroup_subsys_state *cgroup_css(struct cgroup *cgrp, in cgroup_css() argument
463 return rcu_dereference_check(cgrp->subsys[ss->id], in cgroup_css()
466 return &cgrp->self; in cgroup_css()
477 static struct cgroup_subsys_state *cgroup_tryget_css(struct cgroup *cgrp, in cgroup_tryget_css() argument
483 css = cgroup_css(cgrp, ss); in cgroup_tryget_css()
501 static struct cgroup_subsys_state *cgroup_e_css_by_mask(struct cgroup *cgrp, in cgroup_e_css_by_mask() argument
507 return &cgrp->self; in cgroup_e_css_by_mask()
513 while (!(cgroup_ss_mask(cgrp) & (1 << ss->id))) { in cgroup_e_css_by_mask()
514 cgrp = cgroup_parent(cgrp); in cgroup_e_css_by_mask()
515 if (!cgrp) in cgroup_e_css_by_mask()
519 return cgroup_css(cgrp, ss); in cgroup_e_css_by_mask()
535 struct cgroup_subsys_state *cgroup_e_css(struct cgroup *cgrp, in cgroup_e_css() argument
541 css = cgroup_css(cgrp, ss); in cgroup_e_css()
545 cgrp = cgroup_parent(cgrp); in cgroup_e_css()
546 } while (cgrp); in cgroup_e_css()
562 struct cgroup_subsys_state *cgroup_get_e_css(struct cgroup *cgrp, in cgroup_get_e_css() argument
570 css = cgroup_css(cgrp, ss); in cgroup_get_e_css()
574 cgrp = cgroup_parent(cgrp); in cgroup_get_e_css()
575 } while (cgrp); in cgroup_get_e_css()
584 static void cgroup_get_live(struct cgroup *cgrp) in cgroup_get_live() argument
586 WARN_ON_ONCE(cgroup_is_dead(cgrp)); in cgroup_get_live()
587 css_get(&cgrp->self); in cgroup_get_live()
595 int __cgroup_task_count(const struct cgroup *cgrp) in __cgroup_task_count() argument
602 list_for_each_entry(link, &cgrp->cset_links, cset_link) in __cgroup_task_count()
612 int cgroup_task_count(const struct cgroup *cgrp) in cgroup_task_count() argument
617 count = __cgroup_task_count(cgrp); in cgroup_task_count()
625 struct cgroup *cgrp = of->kn->parent->priv; in of_css() local
637 return rcu_dereference_raw(cgrp->subsys[cft->ss->id]); in of_css()
639 return &cgrp->self; in of_css()
651 #define for_each_css(css, ssid, cgrp) \ argument
654 (cgrp)->subsys[(ssid)], \
666 #define for_each_e_css(css, ssid, cgrp) \ argument
668 if (!((css) = cgroup_e_css_by_mask(cgrp, \
698 #define cgroup_for_each_live_child(child, cgrp) \ argument
699 list_for_each_entry((child), &(cgrp)->self.children, self.sibling) \
706 #define cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) \ argument
707 css_for_each_descendant_pre((d_css), cgroup_css((cgrp), NULL)) \
715 #define cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) \ argument
716 css_for_each_descendant_post((d_css), cgroup_css((cgrp), NULL)) \
748 .dfl_cgrp = &cgrp_dfl_root.cgrp,
791 static void cgroup_update_populated(struct cgroup *cgrp, bool populated) in cgroup_update_populated() argument
799 bool was_populated = cgroup_is_populated(cgrp); in cgroup_update_populated()
802 cgrp->nr_populated_csets += adj; in cgroup_update_populated()
805 cgrp->nr_populated_threaded_children += adj; in cgroup_update_populated()
807 cgrp->nr_populated_domain_children += adj; in cgroup_update_populated()
810 if (was_populated == cgroup_is_populated(cgrp)) in cgroup_update_populated()
813 cgroup1_check_for_release(cgrp); in cgroup_update_populated()
814 TRACE_CGROUP_PATH(notify_populated, cgrp, in cgroup_update_populated()
815 cgroup_is_populated(cgrp)); in cgroup_update_populated()
816 cgroup_file_notify(&cgrp->events_file); in cgroup_update_populated()
818 child = cgrp; in cgroup_update_populated()
819 cgrp = cgroup_parent(cgrp); in cgroup_update_populated()
820 } while (cgrp); in cgroup_update_populated()
838 cgroup_update_populated(link->cgrp, populated); in css_set_update_populated()
950 if (cgroup_parent(link->cgrp)) in put_css_set_locked()
951 cgroup_put(link->cgrp); in put_css_set_locked()
1023 cgrp1 = link1->cgrp; in compare_css_sets()
1024 cgrp2 = link2->cgrp; in compare_css_sets()
1053 struct cgroup *cgrp, in find_existing_css_set() argument
1056 struct cgroup_root *root = cgrp->root; in find_existing_css_set()
1073 template[i] = cgroup_e_css_by_mask(cgrp, ss); in find_existing_css_set()
1085 if (!compare_css_sets(cset, old_cset, cgrp, template)) in find_existing_css_set()
1139 struct cgroup *cgrp) in link_css_set() argument
1145 if (cgroup_on_dfl(cgrp)) in link_css_set()
1146 cset->dfl_cgrp = cgrp; in link_css_set()
1150 link->cgrp = cgrp; in link_css_set()
1156 list_move_tail(&link->cset_link, &cgrp->cset_links); in link_css_set()
1159 if (cgroup_parent(cgrp)) in link_css_set()
1160 cgroup_get_live(cgrp); in link_css_set()
1172 struct cgroup *cgrp) in find_css_set() argument
1187 cset = find_existing_css_set(old_cset, cgrp, template); in find_css_set()
1224 struct cgroup *c = link->cgrp; in find_css_set()
1226 if (c->root == cgrp->root) in find_css_set()
1227 c = cgrp; in find_css_set()
1309 struct cgroup *cgrp = &root->cgrp; in cgroup_destroy_root() local
1314 cgroup_lock_and_drain_offline(&cgrp_dfl_root.cgrp); in cgroup_destroy_root()
1317 BUG_ON(!list_empty(&cgrp->self.children)); in cgroup_destroy_root()
1328 list_for_each_entry_safe(link, tmp_link, &cgrp->cset_links, cset_link) { in cgroup_destroy_root()
1365 res = &root->cgrp; in current_cgns_cgroup_from_root()
1372 struct cgroup *c = link->cgrp; in current_cgns_cgroup_from_root()
1396 res = &root->cgrp; in cset_cgroup_from_root()
1403 struct cgroup *c = link->cgrp; in cset_cgroup_from_root()
1458 static char *cgroup_file_name(struct cgroup *cgrp, const struct cftype *cft, in cgroup_file_name() argument
1464 !(cgrp->root->flags & CGRP_ROOT_NOPREFIX)) { in cgroup_file_name()
1468 dbg, cgroup_on_dfl(cgrp) ? ss->name : ss->legacy_name, in cgroup_file_name()
1555 struct cgroup *cgrp; in cgroup_kn_unlock() local
1558 cgrp = kn->priv; in cgroup_kn_unlock()
1560 cgrp = kn->parent->priv; in cgroup_kn_unlock()
1565 cgroup_put(cgrp); in cgroup_kn_unlock()
1587 struct cgroup *cgrp; in cgroup_kn_lock_live() local
1590 cgrp = kn->priv; in cgroup_kn_lock_live()
1592 cgrp = kn->parent->priv; in cgroup_kn_lock_live()
1600 if (!cgroup_tryget(cgrp)) in cgroup_kn_lock_live()
1605 cgroup_lock_and_drain_offline(cgrp); in cgroup_kn_lock_live()
1609 if (!cgroup_is_dead(cgrp)) in cgroup_kn_lock_live()
1610 return cgrp; in cgroup_kn_lock_live()
1616 static void cgroup_rm_file(struct cgroup *cgrp, const struct cftype *cft) in cgroup_rm_file() argument
1623 struct cgroup_subsys_state *css = cgroup_css(cgrp, cft->ss); in cgroup_rm_file()
1633 kernfs_remove_by_name(cgrp->kn, cgroup_file_name(cgrp, cft, name)); in cgroup_rm_file()
1642 struct cgroup *cgrp = css->cgroup; in css_clear_dir() local
1651 if (cgroup_on_dfl(cgrp)) in css_clear_dir()
1656 cgroup_addrm_files(css, cgrp, cfts, false); in css_clear_dir()
1659 cgroup_addrm_files(css, cgrp, cfts, false); in css_clear_dir()
1671 struct cgroup *cgrp = css->cgroup; in css_populate_dir() local
1675 if ((css->flags & CSS_VISIBLE) || !cgrp->kn) in css_populate_dir()
1679 if (cgroup_on_dfl(cgrp)) in css_populate_dir()
1684 ret = cgroup_addrm_files(&cgrp->self, cgrp, cfts, true); in css_populate_dir()
1689 ret = cgroup_addrm_files(css, cgrp, cfts, true); in css_populate_dir()
1704 cgroup_addrm_files(css, cgrp, cfts, false); in css_populate_dir()
1711 struct cgroup *dcgrp = &dst_root->cgrp; in rebind_subsystems()
1723 if (css_next_child(NULL, cgroup_css(&ss->root->cgrp, ss)) && in rebind_subsystems()
1734 struct cgroup *scgrp = &src_root->cgrp; in rebind_subsystems()
1883 static void init_cgroup_housekeeping(struct cgroup *cgrp) in init_cgroup_housekeeping() argument
1888 INIT_LIST_HEAD(&cgrp->self.sibling); in init_cgroup_housekeeping()
1889 INIT_LIST_HEAD(&cgrp->self.children); in init_cgroup_housekeeping()
1890 INIT_LIST_HEAD(&cgrp->cset_links); in init_cgroup_housekeeping()
1891 INIT_LIST_HEAD(&cgrp->pidlists); in init_cgroup_housekeeping()
1892 mutex_init(&cgrp->pidlist_mutex); in init_cgroup_housekeeping()
1893 cgrp->self.cgroup = cgrp; in init_cgroup_housekeeping()
1894 cgrp->self.flags |= CSS_ONLINE; in init_cgroup_housekeeping()
1895 cgrp->dom_cgrp = cgrp; in init_cgroup_housekeeping()
1896 cgrp->max_descendants = INT_MAX; in init_cgroup_housekeeping()
1897 cgrp->max_depth = INT_MAX; in init_cgroup_housekeeping()
1898 INIT_LIST_HEAD(&cgrp->rstat_css_list); in init_cgroup_housekeeping()
1899 prev_cputime_init(&cgrp->prev_cputime); in init_cgroup_housekeeping()
1902 INIT_LIST_HEAD(&cgrp->e_csets[ssid]); in init_cgroup_housekeeping()
1904 init_waitqueue_head(&cgrp->offline_waitq); in init_cgroup_housekeeping()
1905 INIT_WORK(&cgrp->release_agent_work, cgroup1_release_agent); in init_cgroup_housekeeping()
1911 struct cgroup *cgrp = &root->cgrp; in init_cgroup_root() local
1915 cgrp->root = root; in init_cgroup_root()
1916 init_cgroup_housekeeping(cgrp); in init_cgroup_root()
1924 set_bit(CGRP_CPUSET_CLONE_CHILDREN, &root->cgrp.flags); in init_cgroup_root()
1930 struct cgroup *root_cgrp = &root->cgrp; in cgroup_setup_root()
2043 struct cgroup *cgrp; in cgroup_do_get_tree() local
2048 cgrp = cset_cgroup_from_root(ctx->ns->root_cset, ctx->root); in cgroup_do_get_tree()
2053 nsdentry = kernfs_node_dentry(cgrp->kn, sb); in cgroup_do_get_tree()
2064 cgroup_put(&ctx->root->cgrp); in cgroup_do_get_tree()
2089 cgroup_get_live(&cgrp_dfl_root.cgrp); in cgroup_get_tree()
2149 if (list_empty(&root->cgrp.self.children) && root != &cgrp_dfl_root && in cgroup_kill_sb()
2150 !percpu_ref_is_dying(&root->cgrp.self.refcnt)) in cgroup_kill_sb()
2151 percpu_ref_kill(&root->cgrp.self.refcnt); in cgroup_kill_sb()
2152 cgroup_put(&root->cgrp); in cgroup_kill_sb()
2216 int cgroup_path_ns_locked(struct cgroup *cgrp, char *buf, size_t buflen, in cgroup_path_ns_locked() argument
2219 struct cgroup *root = cset_cgroup_from_root(ns->root_cset, cgrp->root); in cgroup_path_ns_locked()
2221 return kernfs_path_from_node(cgrp->kn, root->kn, buf, buflen); in cgroup_path_ns_locked()
2224 int cgroup_path_ns(struct cgroup *cgrp, char *buf, size_t buflen, in cgroup_path_ns() argument
2232 ret = cgroup_path_ns_locked(cgrp, buf, buflen, ns); in cgroup_path_ns()
2257 struct cgroup *cgrp; in task_cgroup_path() local
2267 cgrp = task_cgroup_from_root(task, root); in task_cgroup_path()
2268 ret = cgroup_path_ns_locked(cgrp, buf, buflen, &init_cgroup_ns); in task_cgroup_path()
2848 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_controllers_show() local
2850 cgroup_print_ss_mask(seq, cgroup_control(cgrp)); in cgroup_controllers_show()
2857 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_subtree_control_show() local
2859 cgroup_print_ss_mask(seq, cgrp->subtree_control); in cgroup_subtree_control_show()
2872 static int cgroup_update_dfl_csses(struct cgroup *cgrp) in cgroup_update_dfl_csses() argument
2886 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_update_dfl_csses()
2924 void cgroup_lock_and_drain_offline(struct cgroup *cgrp) in cgroup_lock_and_drain_offline() argument
2935 cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) { in cgroup_lock_and_drain_offline()
2965 static void cgroup_save_control(struct cgroup *cgrp) in cgroup_save_control() argument
2970 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_save_control()
2985 static void cgroup_propagate_control(struct cgroup *cgrp) in cgroup_propagate_control() argument
2990 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_propagate_control()
3006 static void cgroup_restore_control(struct cgroup *cgrp) in cgroup_restore_control() argument
3011 cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) { in cgroup_restore_control()
3021 struct cgroup *cgrp = css->cgroup; in css_visible() local
3023 if (cgroup_control(cgrp) & (1 << ss->id)) in css_visible()
3025 if (!(cgroup_ss_mask(cgrp) & (1 << ss->id))) in css_visible()
3027 return cgroup_on_dfl(cgrp) && ss->implicit_on_dfl; in css_visible()
3043 static int cgroup_apply_control_enable(struct cgroup *cgrp) in cgroup_apply_control_enable() argument
3050 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_apply_control_enable()
3089 static void cgroup_apply_control_disable(struct cgroup *cgrp) in cgroup_apply_control_disable() argument
3096 cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) { in cgroup_apply_control_disable()
3134 static int cgroup_apply_control(struct cgroup *cgrp) in cgroup_apply_control() argument
3138 cgroup_propagate_control(cgrp); in cgroup_apply_control()
3140 ret = cgroup_apply_control_enable(cgrp); in cgroup_apply_control()
3149 ret = cgroup_update_dfl_csses(cgrp); in cgroup_apply_control()
3163 static void cgroup_finalize_control(struct cgroup *cgrp, int ret) in cgroup_finalize_control() argument
3166 cgroup_restore_control(cgrp); in cgroup_finalize_control()
3167 cgroup_propagate_control(cgrp); in cgroup_finalize_control()
3170 cgroup_apply_control_disable(cgrp); in cgroup_finalize_control()
3173 static int cgroup_vet_subtree_control_enable(struct cgroup *cgrp, u16 enable) in cgroup_vet_subtree_control_enable() argument
3182 if (!cgroup_is_valid_domain(cgrp->dom_cgrp)) in cgroup_vet_subtree_control_enable()
3186 if (cgroup_is_mixable(cgrp)) in cgroup_vet_subtree_control_enable()
3191 if (cgroup_is_thread_root(cgrp) || cgroup_is_threaded(cgrp)) in cgroup_vet_subtree_control_enable()
3199 if (cgroup_can_be_thread_root(cgrp) || cgroup_is_threaded(cgrp)) in cgroup_vet_subtree_control_enable()
3207 if (cgroup_has_tasks(cgrp)) in cgroup_vet_subtree_control_enable()
3219 struct cgroup *cgrp, *child; in cgroup_subtree_control_write() local
3252 cgrp = cgroup_kn_lock_live(of->kn, true); in cgroup_subtree_control_write()
3253 if (!cgrp) in cgroup_subtree_control_write()
3258 if (cgrp->subtree_control & (1 << ssid)) { in cgroup_subtree_control_write()
3263 if (!(cgroup_control(cgrp) & (1 << ssid))) { in cgroup_subtree_control_write()
3268 if (!(cgrp->subtree_control & (1 << ssid))) { in cgroup_subtree_control_write()
3274 cgroup_for_each_live_child(child, cgrp) { in cgroup_subtree_control_write()
3288 ret = cgroup_vet_subtree_control_enable(cgrp, enable); in cgroup_subtree_control_write()
3293 cgroup_save_control(cgrp); in cgroup_subtree_control_write()
3295 cgrp->subtree_control |= enable; in cgroup_subtree_control_write()
3296 cgrp->subtree_control &= ~disable; in cgroup_subtree_control_write()
3298 ret = cgroup_apply_control(cgrp); in cgroup_subtree_control_write()
3299 cgroup_finalize_control(cgrp, ret); in cgroup_subtree_control_write()
3303 kernfs_activate(cgrp->kn); in cgroup_subtree_control_write()
3318 static int cgroup_enable_threaded(struct cgroup *cgrp) in cgroup_enable_threaded() argument
3320 struct cgroup *parent = cgroup_parent(cgrp); in cgroup_enable_threaded()
3329 if (cgroup_is_threaded(cgrp)) in cgroup_enable_threaded()
3338 if (cgroup_is_populated(cgrp) || in cgroup_enable_threaded()
3339 cgrp->subtree_control & ~cgrp_dfl_threaded_ss_mask) in cgroup_enable_threaded()
3351 cgroup_save_control(cgrp); in cgroup_enable_threaded()
3353 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) in cgroup_enable_threaded()
3354 if (dsct == cgrp || cgroup_is_threaded(dsct)) in cgroup_enable_threaded()
3357 ret = cgroup_apply_control(cgrp); in cgroup_enable_threaded()
3361 cgroup_finalize_control(cgrp, ret); in cgroup_enable_threaded()
3367 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_type_show() local
3369 if (cgroup_is_threaded(cgrp)) in cgroup_type_show()
3371 else if (!cgroup_is_valid_domain(cgrp)) in cgroup_type_show()
3373 else if (cgroup_is_thread_root(cgrp)) in cgroup_type_show()
3384 struct cgroup *cgrp; in cgroup_type_write() local
3392 cgrp = cgroup_kn_lock_live(of->kn, true); in cgroup_type_write()
3393 if (!cgrp) in cgroup_type_write()
3397 ret = cgroup_enable_threaded(cgrp); in cgroup_type_write()
3405 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_max_descendants_show() local
3406 int descendants = READ_ONCE(cgrp->max_descendants); in cgroup_max_descendants_show()
3419 struct cgroup *cgrp; in cgroup_max_descendants_write() local
3435 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_max_descendants_write()
3436 if (!cgrp) in cgroup_max_descendants_write()
3439 cgrp->max_descendants = descendants; in cgroup_max_descendants_write()
3448 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_max_depth_show() local
3449 int depth = READ_ONCE(cgrp->max_depth); in cgroup_max_depth_show()
3462 struct cgroup *cgrp; in cgroup_max_depth_write() local
3478 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_max_depth_write()
3479 if (!cgrp) in cgroup_max_depth_write()
3482 cgrp->max_depth = depth; in cgroup_max_depth_write()
3491 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_events_show() local
3493 seq_printf(seq, "populated %d\n", cgroup_is_populated(cgrp)); in cgroup_events_show()
3494 seq_printf(seq, "frozen %d\n", test_bit(CGRP_FROZEN, &cgrp->flags)); in cgroup_events_show()
3512 struct cgroup *cgrp, int ssid) in cgroup_extra_stat_show() argument
3521 css = cgroup_tryget_css(cgrp, ss); in cgroup_extra_stat_show()
3532 struct cgroup __maybe_unused *cgrp = seq_css(seq)->cgroup; in cpu_stat_show() local
3537 ret = cgroup_extra_stat_show(seq, cgrp, cpu_cgrp_id); in cpu_stat_show()
3545 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_io_pressure_show() local
3546 struct psi_group *psi = cgroup_ino(cgrp) == 1 ? &psi_system : &cgrp->psi; in cgroup_io_pressure_show()
3552 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_memory_pressure_show() local
3553 struct psi_group *psi = cgroup_ino(cgrp) == 1 ? &psi_system : &cgrp->psi; in cgroup_memory_pressure_show()
3559 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_cpu_pressure_show() local
3560 struct psi_group *psi = cgroup_ino(cgrp) == 1 ? &psi_system : &cgrp->psi; in cgroup_cpu_pressure_show()
3569 struct cgroup *cgrp; in cgroup_pressure_write() local
3571 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_pressure_write()
3572 if (!cgrp) in cgroup_pressure_write()
3575 cgroup_get(cgrp); in cgroup_pressure_write()
3578 new = psi_trigger_create(&cgrp->psi, buf, nbytes, res); in cgroup_pressure_write()
3580 cgroup_put(cgrp); in cgroup_pressure_write()
3586 cgroup_put(cgrp); in cgroup_pressure_write()
3626 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_freeze_show() local
3628 seq_printf(seq, "%d\n", cgrp->freezer.freeze); in cgroup_freeze_show()
3636 struct cgroup *cgrp; in cgroup_freeze_write() local
3647 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_freeze_write()
3648 if (!cgrp) in cgroup_freeze_write()
3651 cgroup_freeze(cgrp, freeze); in cgroup_freeze_write()
3679 struct cgroup *cgrp = of->kn->parent->priv; in cgroup_file_write() local
3693 if ((cgrp->root->flags & CGRP_ROOT_NS_DELEGATE) && in cgroup_file_write()
3695 ns != &init_cgroup_ns && ns->root_cset->dfl_cgrp == cgrp) in cgroup_file_write()
3708 css = cgroup_css(cgrp, cft->ss); in cgroup_file_write()
3812 static int cgroup_add_file(struct cgroup_subsys_state *css, struct cgroup *cgrp, in cgroup_add_file() argument
3823 kn = __kernfs_create_file(cgrp->kn, cgroup_file_name(cgrp, cft, name), in cgroup_add_file()
3861 struct cgroup *cgrp, struct cftype cfts[], in cgroup_addrm_files() argument
3872 if ((cft->flags & __CFTYPE_ONLY_ON_DFL) && !cgroup_on_dfl(cgrp)) in cgroup_addrm_files()
3874 if ((cft->flags & __CFTYPE_NOT_ON_DFL) && cgroup_on_dfl(cgrp)) in cgroup_addrm_files()
3876 if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgroup_parent(cgrp)) in cgroup_addrm_files()
3878 if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgroup_parent(cgrp)) in cgroup_addrm_files()
3883 ret = cgroup_add_file(css, cgrp, cft); in cgroup_addrm_files()
3892 cgroup_rm_file(cgrp, cft); in cgroup_addrm_files()
3901 struct cgroup *root = &ss->root->cgrp; in cgroup_apply_cftypes()
3909 struct cgroup *cgrp = css->cgroup; in cgroup_apply_cftypes() local
3914 ret = cgroup_addrm_files(css, cgrp, cfts, is_add); in cgroup_apply_cftypes()
4617 struct cgroup *cgrp = seq_css(s)->cgroup; in __cgroup_procs_start() local
4632 css_task_iter_start(&cgrp->self, iter_flags, it); in __cgroup_procs_start()
4635 css_task_iter_start(&cgrp->self, iter_flags, it); in __cgroup_procs_start()
4644 struct cgroup *cgrp = seq_css(s)->cgroup; in cgroup_procs_start() local
4652 if (cgroup_is_threaded(cgrp)) in cgroup_procs_start()
4665 static int cgroup_may_write(const struct cgroup *cgrp, struct super_block *sb) in cgroup_may_write() argument
4672 inode = kernfs_get_inode(sb, cgrp->procs_file.kn); in cgroup_may_write()
4934 struct cgroup *cgrp = css->cgroup; in css_free_rwork_fn() local
4945 cgroup_put(cgrp); in css_free_rwork_fn()
4951 atomic_dec(&cgrp->root->nr_cgrps); in css_free_rwork_fn()
4952 cgroup1_pidlist_destroy_all(cgrp); in css_free_rwork_fn()
4953 cancel_work_sync(&cgrp->release_agent_work); in css_free_rwork_fn()
4955 if (cgroup_parent(cgrp)) { in css_free_rwork_fn()
4962 cgroup_put(cgroup_parent(cgrp)); in css_free_rwork_fn()
4963 kernfs_put(cgrp->kn); in css_free_rwork_fn()
4964 psi_cgroup_free(cgrp); in css_free_rwork_fn()
4965 if (cgroup_on_dfl(cgrp)) in css_free_rwork_fn()
4966 cgroup_rstat_exit(cgrp); in css_free_rwork_fn()
4967 kfree(cgrp); in css_free_rwork_fn()
4974 cgroup_destroy_root(cgrp->root); in css_free_rwork_fn()
4984 struct cgroup *cgrp = css->cgroup; in css_release_work_fn() local
4994 cgroup_rstat_flush(cgrp); in css_release_work_fn()
5005 TRACE_CGROUP_PATH(release, cgrp); in css_release_work_fn()
5007 if (cgroup_on_dfl(cgrp)) in css_release_work_fn()
5008 cgroup_rstat_flush(cgrp); in css_release_work_fn()
5011 for (tcgrp = cgroup_parent(cgrp); tcgrp; in css_release_work_fn()
5023 if (cgrp->kn) in css_release_work_fn()
5024 RCU_INIT_POINTER(*(void __rcu __force **)&cgrp->kn->priv, in css_release_work_fn()
5044 struct cgroup_subsys *ss, struct cgroup *cgrp) in init_and_link_css() argument
5048 cgroup_get_live(cgrp); in init_and_link_css()
5051 css->cgroup = cgrp; in init_and_link_css()
5060 if (cgroup_parent(cgrp)) { in init_and_link_css()
5061 css->parent = cgroup_css(cgroup_parent(cgrp), ss); in init_and_link_css()
5065 if (cgroup_on_dfl(cgrp) && ss->css_rstat_flush) in init_and_link_css()
5066 list_add_rcu(&css->rstat_css_node, &cgrp->rstat_css_list); in init_and_link_css()
5068 BUG_ON(cgroup_css(cgrp, ss)); in init_and_link_css()
5120 static struct cgroup_subsys_state *css_create(struct cgroup *cgrp, in css_create() argument
5123 struct cgroup *parent = cgroup_parent(cgrp); in css_create()
5136 init_and_link_css(css, ss, cgrp); in css_create()
5184 struct cgroup *cgrp, *tcgrp; in cgroup_create() local
5190 cgrp = kzalloc(struct_size(cgrp, ancestor_ids, (level + 1)), in cgroup_create()
5192 if (!cgrp) in cgroup_create()
5195 ret = percpu_ref_init(&cgrp->self.refcnt, css_release, 0, GFP_KERNEL); in cgroup_create()
5200 ret = cgroup_rstat_init(cgrp); in cgroup_create()
5206 kn = kernfs_create_dir(parent->kn, name, mode, cgrp); in cgroup_create()
5211 cgrp->kn = kn; in cgroup_create()
5213 init_cgroup_housekeeping(cgrp); in cgroup_create()
5215 cgrp->self.parent = &parent->self; in cgroup_create()
5216 cgrp->root = root; in cgroup_create()
5217 cgrp->level = level; in cgroup_create()
5219 ret = psi_cgroup_alloc(cgrp); in cgroup_create()
5223 ret = cgroup_bpf_inherit(cgrp); in cgroup_create()
5231 cgrp->freezer.e_freeze = parent->freezer.e_freeze; in cgroup_create()
5232 if (cgrp->freezer.e_freeze) { in cgroup_create()
5239 set_bit(CGRP_FREEZE, &cgrp->flags); in cgroup_create()
5240 set_bit(CGRP_FROZEN, &cgrp->flags); in cgroup_create()
5244 for (tcgrp = cgrp; tcgrp; tcgrp = cgroup_parent(tcgrp)) { in cgroup_create()
5245 cgrp->ancestor_ids[tcgrp->level] = cgroup_id(tcgrp); in cgroup_create()
5247 if (tcgrp != cgrp) { in cgroup_create()
5255 if (cgrp->freezer.e_freeze) in cgroup_create()
5262 set_bit(CGRP_NOTIFY_ON_RELEASE, &cgrp->flags); in cgroup_create()
5265 set_bit(CGRP_CPUSET_CLONE_CHILDREN, &cgrp->flags); in cgroup_create()
5267 cgrp->self.serial_nr = css_serial_nr_next++; in cgroup_create()
5270 list_add_tail_rcu(&cgrp->self.sibling, &cgroup_parent(cgrp)->self.children); in cgroup_create()
5278 if (!cgroup_on_dfl(cgrp)) in cgroup_create()
5279 cgrp->subtree_control = cgroup_control(cgrp); in cgroup_create()
5281 cgroup_propagate_control(cgrp); in cgroup_create()
5283 return cgrp; in cgroup_create()
5286 psi_cgroup_free(cgrp); in cgroup_create()
5288 kernfs_remove(cgrp->kn); in cgroup_create()
5291 cgroup_rstat_exit(cgrp); in cgroup_create()
5293 percpu_ref_exit(&cgrp->self.refcnt); in cgroup_create()
5295 kfree(cgrp); in cgroup_create()
5324 struct cgroup *parent, *cgrp; in cgroup_mkdir() local
5340 cgrp = cgroup_create(parent, name, mode); in cgroup_mkdir()
5341 if (IS_ERR(cgrp)) { in cgroup_mkdir()
5342 ret = PTR_ERR(cgrp); in cgroup_mkdir()
5350 kernfs_get(cgrp->kn); in cgroup_mkdir()
5352 ret = cgroup_kn_set_ugid(cgrp->kn); in cgroup_mkdir()
5356 ret = css_populate_dir(&cgrp->self); in cgroup_mkdir()
5360 ret = cgroup_apply_control_enable(cgrp); in cgroup_mkdir()
5364 TRACE_CGROUP_PATH(mkdir, cgrp); in cgroup_mkdir()
5367 kernfs_activate(cgrp->kn); in cgroup_mkdir()
5373 cgroup_destroy_locked(cgrp); in cgroup_mkdir()
5480 static int cgroup_destroy_locked(struct cgroup *cgrp) in cgroup_destroy_locked() argument
5483 struct cgroup *tcgrp, *parent = cgroup_parent(cgrp); in cgroup_destroy_locked()
5494 if (cgroup_is_populated(cgrp)) in cgroup_destroy_locked()
5502 if (css_has_online_children(&cgrp->self)) in cgroup_destroy_locked()
5511 cgrp->self.flags &= ~CSS_ONLINE; in cgroup_destroy_locked()
5514 list_for_each_entry(link, &cgrp->cset_links, cset_link) in cgroup_destroy_locked()
5519 for_each_css(css, ssid, cgrp) in cgroup_destroy_locked()
5523 css_clear_dir(&cgrp->self); in cgroup_destroy_locked()
5524 kernfs_remove(cgrp->kn); in cgroup_destroy_locked()
5526 if (parent && cgroup_is_threaded(cgrp)) in cgroup_destroy_locked()
5530 for (tcgrp = cgroup_parent(cgrp); tcgrp; tcgrp = cgroup_parent(tcgrp)) { in cgroup_destroy_locked()
5537 if (test_bit(CGRP_FROZEN, &cgrp->flags)) in cgroup_destroy_locked()
5544 cgroup_bpf_offline(cgrp); in cgroup_destroy_locked()
5547 percpu_ref_kill(&cgrp->self.refcnt); in cgroup_destroy_locked()
5554 struct cgroup *cgrp; in cgroup_rmdir() local
5557 cgrp = cgroup_kn_lock_live(kn, false); in cgroup_rmdir()
5558 if (!cgrp) in cgroup_rmdir()
5561 ret = cgroup_destroy_locked(cgrp); in cgroup_rmdir()
5563 TRACE_CGROUP_PATH(rmdir, cgrp); in cgroup_rmdir()
5589 css = ss->css_alloc(cgroup_css(&cgrp_dfl_root.cgrp, ss)); in cgroup_init_subsys()
5592 init_and_link_css(css, ss, &cgrp_dfl_root.cgrp); in cgroup_init_subsys()
5643 cgrp_dfl_root.cgrp.self.flags |= CSS_NO_REF; in cgroup_init_early()
5719 &cgrp_dfl_root.cgrp.e_csets[ssid]); in cgroup_init()
5830 struct cgroup *cgrp; in proc_cgroup_show() local
5847 cgrp = task_cgroup_from_root(tsk, root); in proc_cgroup_show()
5858 if (cgroup_on_dfl(cgrp) || !(tsk->flags & PF_EXITING)) { in proc_cgroup_show()
5859 retval = cgroup_path_ns_locked(cgrp, buf, PATH_MAX, in proc_cgroup_show()
5871 if (cgroup_on_dfl(cgrp) && cgroup_is_dead(cgrp)) in proc_cgroup_show()
5902 struct cgroup *cgrp; in cgroup_get_from_file() local
5908 cgrp = css->cgroup; in cgroup_get_from_file()
5909 if (!cgroup_on_dfl(cgrp)) { in cgroup_get_from_file()
5910 cgroup_put(cgrp); in cgroup_get_from_file()
5914 return cgrp; in cgroup_get_from_file()
5998 kargs->cgrp = dst_cgrp; in cgroup_css_set_fork()
6027 struct cgroup *cgrp = kargs->cgrp; in cgroup_css_set_put_fork() local
6037 if (cgrp) { in cgroup_css_set_put_fork()
6038 cgroup_put(cgrp); in cgroup_css_set_put_fork()
6039 kargs->cgrp = NULL; in cgroup_css_set_put_fork()
6278 struct cgroup *cgrp; in css_tryget_online_from_dir() local
6292 cgrp = rcu_dereference(*(void __rcu __force **)&kn->priv); in css_tryget_online_from_dir()
6293 if (cgrp) in css_tryget_online_from_dir()
6294 css = cgroup_css(cgrp, ss); in css_tryget_online_from_dir()
6329 struct cgroup *cgrp; in cgroup_get_from_path() local
6333 kn = kernfs_walk_and_get(cgrp_dfl_root.cgrp.kn, path); in cgroup_get_from_path()
6336 cgrp = kn->priv; in cgroup_get_from_path()
6337 cgroup_get_live(cgrp); in cgroup_get_from_path()
6339 cgrp = ERR_PTR(-ENOTDIR); in cgroup_get_from_path()
6343 cgrp = ERR_PTR(-ENOENT); in cgroup_get_from_path()
6347 return cgrp; in cgroup_get_from_path()
6362 struct cgroup *cgrp; in cgroup_get_from_fd() local
6369 cgrp = cgroup_get_from_file(f); in cgroup_get_from_fd()
6371 return cgrp; in cgroup_get_from_fd()
6487 struct cgroup *cgrp = sock_cgroup_ptr(skcd); in cgroup_sk_free() local
6491 cgroup_bpf_put(cgrp); in cgroup_sk_free()
6492 cgroup_put(cgrp); in cgroup_sk_free()
6498 int cgroup_bpf_attach(struct cgroup *cgrp, in cgroup_bpf_attach() argument
6507 ret = __cgroup_bpf_attach(cgrp, prog, replace_prog, link, type, flags); in cgroup_bpf_attach()
6512 int cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog, in cgroup_bpf_detach() argument
6518 ret = __cgroup_bpf_detach(cgrp, prog, NULL, type); in cgroup_bpf_detach()
6523 int cgroup_bpf_query(struct cgroup *cgrp, const union bpf_attr *attr, in cgroup_bpf_query() argument
6529 ret = __cgroup_bpf_query(cgrp, attr, uattr); in cgroup_bpf_query()