Lines Matching refs:cgrp
166 struct cgroup_root cgrp_dfl_root = { .cgrp.rstat_cpu = &cgrp_dfl_root_rstat_cpu };
238 static int cgroup_apply_control(struct cgroup *cgrp);
239 static void cgroup_finalize_control(struct cgroup *cgrp, int ret);
242 static int cgroup_destroy_locked(struct cgroup *cgrp);
243 static struct cgroup_subsys_state *css_create(struct cgroup *cgrp,
248 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)) \
777 .dfl_cgrp = &cgrp_dfl_root.cgrp,
820 static void cgroup_update_populated(struct cgroup *cgrp, bool populated) in cgroup_update_populated() argument
828 bool was_populated = cgroup_is_populated(cgrp); in cgroup_update_populated()
831 cgrp->nr_populated_csets += adj; in cgroup_update_populated()
834 cgrp->nr_populated_threaded_children += adj; in cgroup_update_populated()
836 cgrp->nr_populated_domain_children += adj; in cgroup_update_populated()
839 if (was_populated == cgroup_is_populated(cgrp)) in cgroup_update_populated()
842 cgroup1_check_for_release(cgrp); in cgroup_update_populated()
843 TRACE_CGROUP_PATH(notify_populated, cgrp, in cgroup_update_populated()
844 cgroup_is_populated(cgrp)); in cgroup_update_populated()
845 cgroup_file_notify(&cgrp->events_file); in cgroup_update_populated()
847 child = cgrp; in cgroup_update_populated()
848 cgrp = cgroup_parent(cgrp); in cgroup_update_populated()
849 } while (cgrp); in cgroup_update_populated()
867 cgroup_update_populated(link->cgrp, populated); in css_set_update_populated()
979 if (cgroup_parent(link->cgrp)) in put_css_set_locked()
980 cgroup_put(link->cgrp); in put_css_set_locked()
1052 cgrp1 = link1->cgrp; in compare_css_sets()
1053 cgrp2 = link2->cgrp; in compare_css_sets()
1082 struct cgroup *cgrp, in find_existing_css_set() argument
1085 struct cgroup_root *root = cgrp->root; in find_existing_css_set()
1102 template[i] = cgroup_e_css_by_mask(cgrp, ss); in find_existing_css_set()
1114 if (!compare_css_sets(cset, old_cset, cgrp, template)) in find_existing_css_set()
1168 struct cgroup *cgrp) in link_css_set() argument
1174 if (cgroup_on_dfl(cgrp)) in link_css_set()
1175 cset->dfl_cgrp = cgrp; in link_css_set()
1179 link->cgrp = cgrp; in link_css_set()
1185 list_move_tail(&link->cset_link, &cgrp->cset_links); in link_css_set()
1188 if (cgroup_parent(cgrp)) in link_css_set()
1189 cgroup_get_live(cgrp); in link_css_set()
1201 struct cgroup *cgrp) in find_css_set() argument
1216 cset = find_existing_css_set(old_cset, cgrp, template); in find_css_set()
1254 struct cgroup *c = link->cgrp; in find_css_set()
1256 if (c->root == cgrp->root) in find_css_set()
1257 c = cgrp; in find_css_set()
1353 struct cgroup *cgrp = &root->cgrp; in cgroup_destroy_root() local
1358 cgroup_lock_and_drain_offline(&cgrp_dfl_root.cgrp); in cgroup_destroy_root()
1361 BUG_ON(!list_empty(&cgrp->self.children)); in cgroup_destroy_root()
1372 list_for_each_entry_safe(link, tmp_link, &cgrp->cset_links, cset_link) { in cgroup_destroy_root()
1390 cgroup_rstat_exit(cgrp); in cgroup_destroy_root()
1404 res_cgroup = &root->cgrp; in __cset_cgroup_from_root()
1412 struct cgroup *c = link->cgrp; in __cset_cgroup_from_root()
1518 static char *cgroup_file_name(struct cgroup *cgrp, const struct cftype *cft, in cgroup_file_name() argument
1524 !(cgrp->root->flags & CGRP_ROOT_NOPREFIX)) { in cgroup_file_name()
1528 dbg, cgroup_on_dfl(cgrp) ? ss->name : ss->legacy_name, in cgroup_file_name()
1615 struct cgroup *cgrp; in cgroup_kn_unlock() local
1618 cgrp = kn->priv; in cgroup_kn_unlock()
1620 cgrp = kn->parent->priv; in cgroup_kn_unlock()
1625 cgroup_put(cgrp); in cgroup_kn_unlock()
1647 struct cgroup *cgrp; in cgroup_kn_lock_live() local
1650 cgrp = kn->priv; in cgroup_kn_lock_live()
1652 cgrp = kn->parent->priv; in cgroup_kn_lock_live()
1660 if (!cgroup_tryget(cgrp)) in cgroup_kn_lock_live()
1665 cgroup_lock_and_drain_offline(cgrp); in cgroup_kn_lock_live()
1669 if (!cgroup_is_dead(cgrp)) in cgroup_kn_lock_live()
1670 return cgrp; in cgroup_kn_lock_live()
1676 static void cgroup_rm_file(struct cgroup *cgrp, const struct cftype *cft) in cgroup_rm_file() argument
1683 struct cgroup_subsys_state *css = cgroup_css(cgrp, cft->ss); in cgroup_rm_file()
1693 kernfs_remove_by_name(cgrp->kn, cgroup_file_name(cgrp, cft, name)); in cgroup_rm_file()
1702 struct cgroup *cgrp = css->cgroup; in css_clear_dir() local
1711 if (cgroup_on_dfl(cgrp)) { in css_clear_dir()
1712 cgroup_addrm_files(css, cgrp, in css_clear_dir()
1715 cgroup_addrm_files(css, cgrp, in css_clear_dir()
1718 cgroup_addrm_files(css, cgrp, in css_clear_dir()
1723 cgroup_addrm_files(css, cgrp, cfts, false); in css_clear_dir()
1735 struct cgroup *cgrp = css->cgroup; in css_populate_dir() local
1739 if ((css->flags & CSS_VISIBLE) || !cgrp->kn) in css_populate_dir()
1743 if (cgroup_on_dfl(cgrp)) { in css_populate_dir()
1744 ret = cgroup_addrm_files(&cgrp->self, cgrp, in css_populate_dir()
1750 ret = cgroup_addrm_files(&cgrp->self, cgrp, in css_populate_dir()
1756 cgroup_addrm_files(css, cgrp, in css_populate_dir()
1761 ret = cgroup_addrm_files(css, cgrp, cfts, true); in css_populate_dir()
1776 cgroup_addrm_files(css, cgrp, cfts, false); in css_populate_dir()
1783 struct cgroup *dcgrp = &dst_root->cgrp; in rebind_subsystems()
1796 if (css_next_child(NULL, cgroup_css(&ss->root->cgrp, ss)) && in rebind_subsystems()
1814 struct cgroup *scgrp = &cgrp_dfl_root.cgrp; in rebind_subsystems()
1827 struct cgroup *scgrp = &src_root->cgrp; in rebind_subsystems()
1995 static void init_cgroup_housekeeping(struct cgroup *cgrp) in init_cgroup_housekeeping() argument
2000 INIT_LIST_HEAD(&cgrp->self.sibling); in init_cgroup_housekeeping()
2001 INIT_LIST_HEAD(&cgrp->self.children); in init_cgroup_housekeeping()
2002 INIT_LIST_HEAD(&cgrp->cset_links); in init_cgroup_housekeeping()
2003 INIT_LIST_HEAD(&cgrp->pidlists); in init_cgroup_housekeeping()
2004 mutex_init(&cgrp->pidlist_mutex); in init_cgroup_housekeeping()
2005 cgrp->self.cgroup = cgrp; in init_cgroup_housekeeping()
2006 cgrp->self.flags |= CSS_ONLINE; in init_cgroup_housekeeping()
2007 cgrp->dom_cgrp = cgrp; in init_cgroup_housekeeping()
2008 cgrp->max_descendants = INT_MAX; in init_cgroup_housekeeping()
2009 cgrp->max_depth = INT_MAX; in init_cgroup_housekeeping()
2010 INIT_LIST_HEAD(&cgrp->rstat_css_list); in init_cgroup_housekeeping()
2011 prev_cputime_init(&cgrp->prev_cputime); in init_cgroup_housekeeping()
2014 INIT_LIST_HEAD(&cgrp->e_csets[ssid]); in init_cgroup_housekeeping()
2016 init_waitqueue_head(&cgrp->offline_waitq); in init_cgroup_housekeeping()
2017 INIT_WORK(&cgrp->release_agent_work, cgroup1_release_agent); in init_cgroup_housekeeping()
2023 struct cgroup *cgrp = &root->cgrp; in init_cgroup_root() local
2027 cgrp->root = root; in init_cgroup_root()
2028 init_cgroup_housekeeping(cgrp); in init_cgroup_root()
2037 set_bit(CGRP_CPUSET_CLONE_CHILDREN, &root->cgrp.flags); in init_cgroup_root()
2043 struct cgroup *root_cgrp = &root->cgrp; in cgroup_setup_root()
2162 struct cgroup *cgrp; in cgroup_do_get_tree() local
2167 cgrp = cset_cgroup_from_root(ctx->ns->root_cset, ctx->root); in cgroup_do_get_tree()
2172 nsdentry = kernfs_node_dentry(cgrp->kn, sb); in cgroup_do_get_tree()
2183 cgroup_put(&ctx->root->cgrp); in cgroup_do_get_tree()
2208 cgroup_get_live(&cgrp_dfl_root.cgrp); in cgroup_get_tree()
2271 if (list_empty(&root->cgrp.self.children) && root != &cgrp_dfl_root && in cgroup_kill_sb()
2272 !percpu_ref_is_dying(&root->cgrp.self.refcnt)) { in cgroup_kill_sb()
2273 cgroup_bpf_offline(&root->cgrp); in cgroup_kill_sb()
2274 percpu_ref_kill(&root->cgrp.self.refcnt); in cgroup_kill_sb()
2276 cgroup_put(&root->cgrp); in cgroup_kill_sb()
2340 int cgroup_path_ns_locked(struct cgroup *cgrp, char *buf, size_t buflen, in cgroup_path_ns_locked() argument
2343 struct cgroup *root = cset_cgroup_from_root(ns->root_cset, cgrp->root); in cgroup_path_ns_locked()
2345 return kernfs_path_from_node(cgrp->kn, root->kn, buf, buflen); in cgroup_path_ns_locked()
2348 int cgroup_path_ns(struct cgroup *cgrp, char *buf, size_t buflen, in cgroup_path_ns() argument
2356 ret = cgroup_path_ns_locked(cgrp, buf, buflen, ns); in cgroup_path_ns()
2381 struct cgroup *cgrp; in task_cgroup_path() local
2391 cgrp = task_cgroup_from_root(task, root); in task_cgroup_path()
2392 ret = cgroup_path_ns_locked(cgrp, buf, buflen, &init_cgroup_ns); in task_cgroup_path()
3007 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_controllers_show() local
3009 cgroup_print_ss_mask(seq, cgroup_control(cgrp)); in cgroup_controllers_show()
3016 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_subtree_control_show() local
3018 cgroup_print_ss_mask(seq, cgrp->subtree_control); in cgroup_subtree_control_show()
3031 static int cgroup_update_dfl_csses(struct cgroup *cgrp) in cgroup_update_dfl_csses() argument
3044 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_update_dfl_csses()
3053 if (dsct == cgrp) in cgroup_update_dfl_csses()
3101 void cgroup_lock_and_drain_offline(struct cgroup *cgrp) in cgroup_lock_and_drain_offline() argument
3112 cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) { in cgroup_lock_and_drain_offline()
3142 static void cgroup_save_control(struct cgroup *cgrp) in cgroup_save_control() argument
3147 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_save_control()
3162 static void cgroup_propagate_control(struct cgroup *cgrp) in cgroup_propagate_control() argument
3167 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_propagate_control()
3183 static void cgroup_restore_control(struct cgroup *cgrp) in cgroup_restore_control() argument
3188 cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) { in cgroup_restore_control()
3198 struct cgroup *cgrp = css->cgroup; in css_visible() local
3200 if (cgroup_control(cgrp) & (1 << ss->id)) in css_visible()
3202 if (!(cgroup_ss_mask(cgrp) & (1 << ss->id))) in css_visible()
3204 return cgroup_on_dfl(cgrp) && ss->implicit_on_dfl; in css_visible()
3220 static int cgroup_apply_control_enable(struct cgroup *cgrp) in cgroup_apply_control_enable() argument
3227 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) { in cgroup_apply_control_enable()
3266 static void cgroup_apply_control_disable(struct cgroup *cgrp) in cgroup_apply_control_disable() argument
3273 cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) { in cgroup_apply_control_disable()
3311 static int cgroup_apply_control(struct cgroup *cgrp) in cgroup_apply_control() argument
3315 cgroup_propagate_control(cgrp); in cgroup_apply_control()
3317 ret = cgroup_apply_control_enable(cgrp); in cgroup_apply_control()
3326 return cgroup_update_dfl_csses(cgrp); in cgroup_apply_control()
3336 static void cgroup_finalize_control(struct cgroup *cgrp, int ret) in cgroup_finalize_control() argument
3339 cgroup_restore_control(cgrp); in cgroup_finalize_control()
3340 cgroup_propagate_control(cgrp); in cgroup_finalize_control()
3343 cgroup_apply_control_disable(cgrp); in cgroup_finalize_control()
3346 static int cgroup_vet_subtree_control_enable(struct cgroup *cgrp, u16 enable) in cgroup_vet_subtree_control_enable() argument
3355 if (!cgroup_is_valid_domain(cgrp->dom_cgrp)) in cgroup_vet_subtree_control_enable()
3359 if (cgroup_is_mixable(cgrp)) in cgroup_vet_subtree_control_enable()
3364 if (cgroup_is_thread_root(cgrp) || cgroup_is_threaded(cgrp)) in cgroup_vet_subtree_control_enable()
3372 if (cgroup_can_be_thread_root(cgrp) || cgroup_is_threaded(cgrp)) in cgroup_vet_subtree_control_enable()
3380 if (cgroup_has_tasks(cgrp)) in cgroup_vet_subtree_control_enable()
3392 struct cgroup *cgrp, *child; in cgroup_subtree_control_write() local
3425 cgrp = cgroup_kn_lock_live(of->kn, true); in cgroup_subtree_control_write()
3426 if (!cgrp) in cgroup_subtree_control_write()
3431 if (cgrp->subtree_control & (1 << ssid)) { in cgroup_subtree_control_write()
3436 if (!(cgroup_control(cgrp) & (1 << ssid))) { in cgroup_subtree_control_write()
3441 if (!(cgrp->subtree_control & (1 << ssid))) { in cgroup_subtree_control_write()
3447 cgroup_for_each_live_child(child, cgrp) { in cgroup_subtree_control_write()
3461 ret = cgroup_vet_subtree_control_enable(cgrp, enable); in cgroup_subtree_control_write()
3466 cgroup_save_control(cgrp); in cgroup_subtree_control_write()
3468 cgrp->subtree_control |= enable; in cgroup_subtree_control_write()
3469 cgrp->subtree_control &= ~disable; in cgroup_subtree_control_write()
3471 ret = cgroup_apply_control(cgrp); in cgroup_subtree_control_write()
3472 cgroup_finalize_control(cgrp, ret); in cgroup_subtree_control_write()
3476 kernfs_activate(cgrp->kn); in cgroup_subtree_control_write()
3491 static int cgroup_enable_threaded(struct cgroup *cgrp) in cgroup_enable_threaded() argument
3493 struct cgroup *parent = cgroup_parent(cgrp); in cgroup_enable_threaded()
3502 if (cgroup_is_threaded(cgrp)) in cgroup_enable_threaded()
3511 if (cgroup_is_populated(cgrp) || in cgroup_enable_threaded()
3512 cgrp->subtree_control & ~cgrp_dfl_threaded_ss_mask) in cgroup_enable_threaded()
3524 cgroup_save_control(cgrp); in cgroup_enable_threaded()
3526 cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) in cgroup_enable_threaded()
3527 if (dsct == cgrp || cgroup_is_threaded(dsct)) in cgroup_enable_threaded()
3530 ret = cgroup_apply_control(cgrp); in cgroup_enable_threaded()
3534 cgroup_finalize_control(cgrp, ret); in cgroup_enable_threaded()
3540 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_type_show() local
3542 if (cgroup_is_threaded(cgrp)) in cgroup_type_show()
3544 else if (!cgroup_is_valid_domain(cgrp)) in cgroup_type_show()
3546 else if (cgroup_is_thread_root(cgrp)) in cgroup_type_show()
3557 struct cgroup *cgrp; in cgroup_type_write() local
3565 cgrp = cgroup_kn_lock_live(of->kn, true); in cgroup_type_write()
3566 if (!cgrp) in cgroup_type_write()
3570 ret = cgroup_enable_threaded(cgrp); in cgroup_type_write()
3578 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_max_descendants_show() local
3579 int descendants = READ_ONCE(cgrp->max_descendants); in cgroup_max_descendants_show()
3592 struct cgroup *cgrp; in cgroup_max_descendants_write() local
3608 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_max_descendants_write()
3609 if (!cgrp) in cgroup_max_descendants_write()
3612 cgrp->max_descendants = descendants; in cgroup_max_descendants_write()
3621 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_max_depth_show() local
3622 int depth = READ_ONCE(cgrp->max_depth); in cgroup_max_depth_show()
3635 struct cgroup *cgrp; in cgroup_max_depth_write() local
3651 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_max_depth_write()
3652 if (!cgrp) in cgroup_max_depth_write()
3655 cgrp->max_depth = depth; in cgroup_max_depth_write()
3664 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_events_show() local
3666 seq_printf(seq, "populated %d\n", cgroup_is_populated(cgrp)); in cgroup_events_show()
3667 seq_printf(seq, "frozen %d\n", test_bit(CGRP_FROZEN, &cgrp->flags)); in cgroup_events_show()
3685 struct cgroup *cgrp, int ssid) in cgroup_extra_stat_show() argument
3694 css = cgroup_tryget_css(cgrp, ss); in cgroup_extra_stat_show()
3705 struct cgroup __maybe_unused *cgrp = seq_css(seq)->cgroup; in cpu_stat_show() local
3710 ret = cgroup_extra_stat_show(seq, cgrp, cpu_cgrp_id); in cpu_stat_show()
3718 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_io_pressure_show() local
3719 struct psi_group *psi = cgroup_psi(cgrp); in cgroup_io_pressure_show()
3725 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_memory_pressure_show() local
3726 struct psi_group *psi = cgroup_psi(cgrp); in cgroup_memory_pressure_show()
3732 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_cpu_pressure_show() local
3733 struct psi_group *psi = cgroup_psi(cgrp); in cgroup_cpu_pressure_show()
3743 struct cgroup *cgrp; in pressure_write() local
3746 cgrp = cgroup_kn_lock_live(of->kn, false); in pressure_write()
3747 if (!cgrp) in pressure_write()
3750 cgroup_get(cgrp); in pressure_write()
3755 cgroup_put(cgrp); in pressure_write()
3759 psi = cgroup_psi(cgrp); in pressure_write()
3762 cgroup_put(cgrp); in pressure_write()
3767 cgroup_put(cgrp); in pressure_write()
3796 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_irq_pressure_show() local
3797 struct psi_group *psi = cgroup_psi(cgrp); in cgroup_irq_pressure_show()
3812 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_pressure_show() local
3813 struct psi_group *psi = cgroup_psi(cgrp); in cgroup_pressure_show()
3826 struct cgroup *cgrp; in cgroup_pressure_write() local
3836 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_pressure_write()
3837 if (!cgrp) in cgroup_pressure_write()
3840 psi = cgroup_psi(cgrp); in cgroup_pressure_write()
3846 cgroup_file_show(&cgrp->psi_files[i], enable); in cgroup_pressure_write()
3891 struct cgroup *cgrp = seq_css(seq)->cgroup; in cgroup_freeze_show() local
3893 seq_printf(seq, "%d\n", cgrp->freezer.freeze); in cgroup_freeze_show()
3901 struct cgroup *cgrp; in cgroup_freeze_write() local
3912 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_freeze_write()
3913 if (!cgrp) in cgroup_freeze_write()
3916 cgroup_freeze(cgrp, freeze); in cgroup_freeze_write()
3923 static void __cgroup_kill(struct cgroup *cgrp) in __cgroup_kill() argument
3931 set_bit(CGRP_KILL, &cgrp->flags); in __cgroup_kill()
3934 css_task_iter_start(&cgrp->self, CSS_TASK_ITER_PROCS | CSS_TASK_ITER_THREADED, &it); in __cgroup_kill()
3949 clear_bit(CGRP_KILL, &cgrp->flags); in __cgroup_kill()
3953 static void cgroup_kill(struct cgroup *cgrp) in cgroup_kill() argument
3960 cgroup_for_each_live_descendant_pre(dsct, css, cgrp) in cgroup_kill()
3969 struct cgroup *cgrp; in cgroup_kill_write() local
3978 cgrp = cgroup_kn_lock_live(of->kn, false); in cgroup_kill_write()
3979 if (!cgrp) in cgroup_kill_write()
3987 if (cgroup_is_threaded(cgrp)) in cgroup_kill_write()
3990 cgroup_kill(cgrp); in cgroup_kill_write()
4037 struct cgroup *cgrp = of->kn->parent->priv; in cgroup_file_write() local
4051 if ((cgrp->root->flags & CGRP_ROOT_NS_DELEGATE) && in cgroup_file_write()
4053 ctx->ns != &init_cgroup_ns && ctx->ns->root_cset->dfl_cgrp == cgrp) in cgroup_file_write()
4066 css = cgroup_css(cgrp, cft->ss); in cgroup_file_write()
4170 static int cgroup_add_file(struct cgroup_subsys_state *css, struct cgroup *cgrp, in cgroup_add_file() argument
4181 kn = __kernfs_create_file(cgrp->kn, cgroup_file_name(cgrp, cft, name), in cgroup_add_file()
4219 struct cgroup *cgrp, struct cftype cfts[], in cgroup_addrm_files() argument
4230 if ((cft->flags & __CFTYPE_ONLY_ON_DFL) && !cgroup_on_dfl(cgrp)) in cgroup_addrm_files()
4232 if ((cft->flags & __CFTYPE_NOT_ON_DFL) && cgroup_on_dfl(cgrp)) in cgroup_addrm_files()
4234 if ((cft->flags & CFTYPE_NOT_ON_ROOT) && !cgroup_parent(cgrp)) in cgroup_addrm_files()
4236 if ((cft->flags & CFTYPE_ONLY_ON_ROOT) && cgroup_parent(cgrp)) in cgroup_addrm_files()
4241 ret = cgroup_add_file(css, cgrp, cft); in cgroup_addrm_files()
4250 cgroup_rm_file(cgrp, cft); in cgroup_addrm_files()
4259 struct cgroup *root = &ss->root->cgrp; in cgroup_apply_cftypes()
4267 struct cgroup *cgrp = css->cgroup; in cgroup_apply_cftypes() local
4272 ret = cgroup_addrm_files(css, cgrp, cfts, is_add); in cgroup_apply_cftypes()
5008 struct cgroup *cgrp = seq_css(s)->cgroup; in __cgroup_procs_start() local
5019 css_task_iter_start(&cgrp->self, iter_flags, it); in __cgroup_procs_start()
5023 css_task_iter_start(&cgrp->self, iter_flags, it); in __cgroup_procs_start()
5032 struct cgroup *cgrp = seq_css(s)->cgroup; in cgroup_procs_start() local
5040 if (cgroup_is_threaded(cgrp)) in cgroup_procs_start()
5053 static int cgroup_may_write(const struct cgroup *cgrp, struct super_block *sb) in cgroup_may_write() argument
5060 inode = kernfs_get_inode(sb, cgrp->procs_file.kn); in cgroup_may_write()
5332 struct cgroup *cgrp = css->cgroup; in css_free_rwork_fn() local
5343 cgroup_put(cgrp); in css_free_rwork_fn()
5349 atomic_dec(&cgrp->root->nr_cgrps); in css_free_rwork_fn()
5350 cgroup1_pidlist_destroy_all(cgrp); in css_free_rwork_fn()
5351 cancel_work_sync(&cgrp->release_agent_work); in css_free_rwork_fn()
5353 if (cgroup_parent(cgrp)) { in css_free_rwork_fn()
5360 cgroup_put(cgroup_parent(cgrp)); in css_free_rwork_fn()
5361 kernfs_put(cgrp->kn); in css_free_rwork_fn()
5362 psi_cgroup_free(cgrp); in css_free_rwork_fn()
5363 cgroup_rstat_exit(cgrp); in css_free_rwork_fn()
5364 kfree(cgrp); in css_free_rwork_fn()
5371 cgroup_destroy_root(cgrp->root); in css_free_rwork_fn()
5381 struct cgroup *cgrp = css->cgroup; in css_release_work_fn() local
5391 cgroup_rstat_flush(cgrp); in css_release_work_fn()
5402 TRACE_CGROUP_PATH(release, cgrp); in css_release_work_fn()
5404 cgroup_rstat_flush(cgrp); in css_release_work_fn()
5407 for (tcgrp = cgroup_parent(cgrp); tcgrp; in css_release_work_fn()
5419 if (cgrp->kn) in css_release_work_fn()
5420 RCU_INIT_POINTER(*(void __rcu __force **)&cgrp->kn->priv, in css_release_work_fn()
5440 struct cgroup_subsys *ss, struct cgroup *cgrp) in init_and_link_css() argument
5444 cgroup_get_live(cgrp); in init_and_link_css()
5447 css->cgroup = cgrp; in init_and_link_css()
5456 if (cgroup_parent(cgrp)) { in init_and_link_css()
5457 css->parent = cgroup_css(cgroup_parent(cgrp), ss); in init_and_link_css()
5462 list_add_rcu(&css->rstat_css_node, &cgrp->rstat_css_list); in init_and_link_css()
5464 BUG_ON(cgroup_css(cgrp, ss)); in init_and_link_css()
5516 static struct cgroup_subsys_state *css_create(struct cgroup *cgrp, in css_create() argument
5519 struct cgroup *parent = cgroup_parent(cgrp); in css_create()
5532 init_and_link_css(css, ss, cgrp); in css_create()
5571 struct cgroup *cgrp, *tcgrp; in cgroup_create() local
5577 cgrp = kzalloc(struct_size(cgrp, ancestors, (level + 1)), GFP_KERNEL); in cgroup_create()
5578 if (!cgrp) in cgroup_create()
5581 ret = percpu_ref_init(&cgrp->self.refcnt, css_release, 0, GFP_KERNEL); in cgroup_create()
5585 ret = cgroup_rstat_init(cgrp); in cgroup_create()
5590 kn = kernfs_create_dir(parent->kn, name, mode, cgrp); in cgroup_create()
5595 cgrp->kn = kn; in cgroup_create()
5597 init_cgroup_housekeeping(cgrp); in cgroup_create()
5599 cgrp->self.parent = &parent->self; in cgroup_create()
5600 cgrp->root = root; in cgroup_create()
5601 cgrp->level = level; in cgroup_create()
5603 ret = psi_cgroup_alloc(cgrp); in cgroup_create()
5607 ret = cgroup_bpf_inherit(cgrp); in cgroup_create()
5615 cgrp->freezer.e_freeze = parent->freezer.e_freeze; in cgroup_create()
5616 if (cgrp->freezer.e_freeze) { in cgroup_create()
5623 set_bit(CGRP_FREEZE, &cgrp->flags); in cgroup_create()
5624 set_bit(CGRP_FROZEN, &cgrp->flags); in cgroup_create()
5628 for (tcgrp = cgrp; tcgrp; tcgrp = cgroup_parent(tcgrp)) { in cgroup_create()
5629 cgrp->ancestors[tcgrp->level] = tcgrp; in cgroup_create()
5631 if (tcgrp != cgrp) { in cgroup_create()
5639 if (cgrp->freezer.e_freeze) in cgroup_create()
5646 set_bit(CGRP_NOTIFY_ON_RELEASE, &cgrp->flags); in cgroup_create()
5649 set_bit(CGRP_CPUSET_CLONE_CHILDREN, &cgrp->flags); in cgroup_create()
5651 cgrp->self.serial_nr = css_serial_nr_next++; in cgroup_create()
5654 list_add_tail_rcu(&cgrp->self.sibling, &cgroup_parent(cgrp)->self.children); in cgroup_create()
5662 if (!cgroup_on_dfl(cgrp)) in cgroup_create()
5663 cgrp->subtree_control = cgroup_control(cgrp); in cgroup_create()
5665 cgroup_propagate_control(cgrp); in cgroup_create()
5667 return cgrp; in cgroup_create()
5670 psi_cgroup_free(cgrp); in cgroup_create()
5672 kernfs_remove(cgrp->kn); in cgroup_create()
5674 cgroup_rstat_exit(cgrp); in cgroup_create()
5676 percpu_ref_exit(&cgrp->self.refcnt); in cgroup_create()
5678 kfree(cgrp); in cgroup_create()
5707 struct cgroup *parent, *cgrp; in cgroup_mkdir() local
5723 cgrp = cgroup_create(parent, name, mode); in cgroup_mkdir()
5724 if (IS_ERR(cgrp)) { in cgroup_mkdir()
5725 ret = PTR_ERR(cgrp); in cgroup_mkdir()
5733 kernfs_get(cgrp->kn); in cgroup_mkdir()
5735 ret = cgroup_kn_set_ugid(cgrp->kn); in cgroup_mkdir()
5739 ret = css_populate_dir(&cgrp->self); in cgroup_mkdir()
5743 ret = cgroup_apply_control_enable(cgrp); in cgroup_mkdir()
5747 TRACE_CGROUP_PATH(mkdir, cgrp); in cgroup_mkdir()
5750 kernfs_activate(cgrp->kn); in cgroup_mkdir()
5756 cgroup_destroy_locked(cgrp); in cgroup_mkdir()
5863 static int cgroup_destroy_locked(struct cgroup *cgrp) in cgroup_destroy_locked() argument
5866 struct cgroup *tcgrp, *parent = cgroup_parent(cgrp); in cgroup_destroy_locked()
5877 if (cgroup_is_populated(cgrp)) in cgroup_destroy_locked()
5885 if (css_has_online_children(&cgrp->self)) in cgroup_destroy_locked()
5894 cgrp->self.flags &= ~CSS_ONLINE; in cgroup_destroy_locked()
5897 list_for_each_entry(link, &cgrp->cset_links, cset_link) in cgroup_destroy_locked()
5902 for_each_css(css, ssid, cgrp) in cgroup_destroy_locked()
5906 css_clear_dir(&cgrp->self); in cgroup_destroy_locked()
5907 kernfs_remove(cgrp->kn); in cgroup_destroy_locked()
5909 if (cgroup_is_threaded(cgrp)) in cgroup_destroy_locked()
5913 for (tcgrp = cgroup_parent(cgrp); tcgrp; tcgrp = cgroup_parent(tcgrp)) { in cgroup_destroy_locked()
5920 if (test_bit(CGRP_FROZEN, &cgrp->flags)) in cgroup_destroy_locked()
5927 cgroup_bpf_offline(cgrp); in cgroup_destroy_locked()
5930 percpu_ref_kill(&cgrp->self.refcnt); in cgroup_destroy_locked()
5937 struct cgroup *cgrp; in cgroup_rmdir() local
5940 cgrp = cgroup_kn_lock_live(kn, false); in cgroup_rmdir()
5941 if (!cgrp) in cgroup_rmdir()
5944 ret = cgroup_destroy_locked(cgrp); in cgroup_rmdir()
5946 TRACE_CGROUP_PATH(rmdir, cgrp); in cgroup_rmdir()
5975 init_and_link_css(css, ss, &cgrp_dfl_root.cgrp); in cgroup_init_subsys()
6026 cgrp_dfl_root.cgrp.self.flags |= CSS_NO_REF; in cgroup_init_early()
6095 &cgrp_dfl_root.cgrp.e_csets[ssid]); in cgroup_init()
6189 struct cgroup *cgrp, *root_cgrp; in cgroup_get_from_id() local
6202 cgrp = rcu_dereference(*(void __rcu __force **)&kn->priv); in cgroup_get_from_id()
6203 if (cgrp && !cgroup_tryget(cgrp)) in cgroup_get_from_id()
6204 cgrp = NULL; in cgroup_get_from_id()
6209 if (!cgrp) in cgroup_get_from_id()
6213 if (!cgroup_is_descendant(cgrp, root_cgrp)) { in cgroup_get_from_id()
6214 cgroup_put(cgrp); in cgroup_get_from_id()
6218 return cgrp; in cgroup_get_from_id()
6244 struct cgroup *cgrp; in proc_cgroup_show() local
6261 cgrp = task_cgroup_from_root(tsk, root); in proc_cgroup_show()
6272 if (cgroup_on_dfl(cgrp) || !(tsk->flags & PF_EXITING)) { in proc_cgroup_show()
6273 retval = cgroup_path_ns_locked(cgrp, buf, PATH_MAX, in proc_cgroup_show()
6285 if (cgroup_on_dfl(cgrp) && cgroup_is_dead(cgrp)) in proc_cgroup_show()
6339 struct cgroup *cgrp = cgroup_v1v2_get_from_file(f); in cgroup_get_from_file() local
6341 if (IS_ERR(cgrp)) in cgroup_get_from_file()
6342 return ERR_CAST(cgrp); in cgroup_get_from_file()
6344 if (!cgroup_on_dfl(cgrp)) { in cgroup_get_from_file()
6345 cgroup_put(cgrp); in cgroup_get_from_file()
6349 return cgrp; in cgroup_get_from_file()
6448 kargs->cgrp = dst_cgrp; in cgroup_css_set_fork()
6477 struct cgroup *cgrp = kargs->cgrp; in cgroup_css_set_put_fork() local
6487 if (cgrp) { in cgroup_css_set_put_fork()
6488 cgroup_put(cgrp); in cgroup_css_set_put_fork()
6489 kargs->cgrp = NULL; in cgroup_css_set_put_fork()
6582 if (kargs->cgrp) in cgroup_post_fork()
6583 cgrp_flags = kargs->cgrp->flags; in cgroup_post_fork()
6763 struct cgroup *cgrp; in css_tryget_online_from_dir() local
6777 cgrp = rcu_dereference(*(void __rcu __force **)&kn->priv); in css_tryget_online_from_dir()
6778 if (cgrp) in css_tryget_online_from_dir()
6779 css = cgroup_css(cgrp, ss); in css_tryget_online_from_dir()
6814 struct cgroup *cgrp = ERR_PTR(-ENOENT); in cgroup_get_from_path() local
6823 cgrp = ERR_PTR(-ENOTDIR); in cgroup_get_from_path()
6829 cgrp = rcu_dereference(*(void __rcu __force **)&kn->priv); in cgroup_get_from_path()
6830 if (!cgrp || !cgroup_tryget(cgrp)) in cgroup_get_from_path()
6831 cgrp = ERR_PTR(-ENOENT); in cgroup_get_from_path()
6838 return cgrp; in cgroup_get_from_path()
6853 struct cgroup *cgrp; in cgroup_v1v2_get_from_fd() local
6860 cgrp = cgroup_v1v2_get_from_file(f); in cgroup_v1v2_get_from_fd()
6862 return cgrp; in cgroup_v1v2_get_from_fd()
6872 struct cgroup *cgrp = cgroup_v1v2_get_from_fd(fd); in cgroup_get_from_fd() local
6874 if (IS_ERR(cgrp)) in cgroup_get_from_fd()
6875 return ERR_CAST(cgrp); in cgroup_get_from_fd()
6877 if (!cgroup_on_dfl(cgrp)) { in cgroup_get_from_fd()
6878 cgroup_put(cgrp); in cgroup_get_from_fd()
6881 return cgrp; in cgroup_get_from_fd()
6940 cgroup = &cgrp_dfl_root.cgrp; in cgroup_sk_alloc()
6963 struct cgroup *cgrp = sock_cgroup_ptr(skcd); in cgroup_sk_clone() local
6970 cgroup_get(cgrp); in cgroup_sk_clone()
6971 cgroup_bpf_get(cgrp); in cgroup_sk_clone()
6976 struct cgroup *cgrp = sock_cgroup_ptr(skcd); in cgroup_sk_free() local
6978 cgroup_bpf_put(cgrp); in cgroup_sk_free()
6979 cgroup_put(cgrp); in cgroup_sk_free()