Lines Matching refs:css
224 static void kill_css(struct cgroup_subsys_state *css);
225 static int cgroup_addrm_files(struct cgroup_subsys_state *css,
487 struct cgroup_subsys_state *css; in cgroup_tryget_css() local
490 css = cgroup_css(cgrp, ss); in cgroup_tryget_css()
491 if (css && !css_tryget_online(css)) in cgroup_tryget_css()
492 css = NULL; in cgroup_tryget_css()
495 return css; in cgroup_tryget_css()
545 struct cgroup_subsys_state *css; in cgroup_e_css() local
548 css = cgroup_css(cgrp, ss); in cgroup_e_css()
550 if (css) in cgroup_e_css()
551 return css; in cgroup_e_css()
572 struct cgroup_subsys_state *css; in cgroup_get_e_css() local
577 css = cgroup_css(cgrp, ss); in cgroup_get_e_css()
579 if (css && css_tryget_online(css)) in cgroup_get_e_css()
584 css = init_css_set.subsys[ss->id]; in cgroup_get_e_css()
585 css_get(css); in cgroup_get_e_css()
588 return css; in cgroup_get_e_css()
658 #define for_each_css(css, ssid, cgrp) \ argument
660 if (!((css) = rcu_dereference_check( \
673 #define for_each_e_css(css, ssid, cgrp) \ argument
675 if (!((css) = cgroup_e_css_by_mask(cgrp, \
921 static unsigned long css_set_hash(struct cgroup_subsys_state *css[]) in css_set_hash() argument
928 key += (unsigned long)css[i]; in css_set_hash()
1248 struct cgroup_subsys_state *css = cset->subsys[ssid]; in find_css_set() local
1251 &css->cgroup->e_csets[ssid]); in find_css_set()
1252 css_get(css); in find_css_set()
1633 struct cgroup_subsys_state *css = cgroup_css(cgrp, cft->ss); in cgroup_rm_file() local
1634 struct cgroup_file *cfile = (void *)css + cft->file_offset; in cgroup_rm_file()
1650 static void css_clear_dir(struct cgroup_subsys_state *css) in css_clear_dir() argument
1652 struct cgroup *cgrp = css->cgroup; in css_clear_dir()
1655 if (!(css->flags & CSS_VISIBLE)) in css_clear_dir()
1658 css->flags &= ~CSS_VISIBLE; in css_clear_dir()
1660 if (!css->ss) { in css_clear_dir()
1666 cgroup_addrm_files(css, cgrp, cfts, false); in css_clear_dir()
1668 list_for_each_entry(cfts, &css->ss->cfts, node) in css_clear_dir()
1669 cgroup_addrm_files(css, cgrp, cfts, false); in css_clear_dir()
1679 static int css_populate_dir(struct cgroup_subsys_state *css) in css_populate_dir() argument
1681 struct cgroup *cgrp = css->cgroup; in css_populate_dir()
1685 if ((css->flags & CSS_VISIBLE) || !cgrp->kn) in css_populate_dir()
1688 if (!css->ss) { in css_populate_dir()
1698 list_for_each_entry(cfts, &css->ss->cfts, node) { in css_populate_dir()
1699 ret = cgroup_addrm_files(css, cgrp, cfts, true); in css_populate_dir()
1707 css->flags |= CSS_VISIBLE; in css_populate_dir()
1711 list_for_each_entry(cfts, &css->ss->cfts, node) { in css_populate_dir()
1714 cgroup_addrm_files(css, cgrp, cfts, false); in css_populate_dir()
1745 struct cgroup_subsys_state *css = cgroup_css(scgrp, ss); in rebind_subsystems() local
1748 WARN_ON(!css || cgroup_css(dcgrp, ss)); in rebind_subsystems()
1757 rcu_assign_pointer(dcgrp->subsys[ssid], css); in rebind_subsystems()
1759 css->cgroup = dcgrp; in rebind_subsystems()
1782 ss->bind(css); in rebind_subsystems()
2997 struct cgroup_subsys_state *css = cgroup_css(dsct, ss); in cgroup_lock_and_drain_offline() local
3000 if (!css || !percpu_ref_is_dying(&css->refcnt)) in cgroup_lock_and_drain_offline()
3078 static bool css_visible(struct cgroup_subsys_state *css) in css_visible() argument
3080 struct cgroup_subsys *ss = css->ss; in css_visible()
3081 struct cgroup *cgrp = css->cgroup; in css_visible()
3112 struct cgroup_subsys_state *css = cgroup_css(dsct, ss); in cgroup_apply_control_enable() local
3114 WARN_ON_ONCE(css && percpu_ref_is_dying(&css->refcnt)); in cgroup_apply_control_enable()
3119 if (!css) { in cgroup_apply_control_enable()
3120 css = css_create(dsct, ss); in cgroup_apply_control_enable()
3121 if (IS_ERR(css)) in cgroup_apply_control_enable()
3122 return PTR_ERR(css); in cgroup_apply_control_enable()
3125 if (css_visible(css)) { in cgroup_apply_control_enable()
3126 ret = css_populate_dir(css); in cgroup_apply_control_enable()
3158 struct cgroup_subsys_state *css = cgroup_css(dsct, ss); in cgroup_apply_control_disable() local
3160 WARN_ON_ONCE(css && percpu_ref_is_dying(&css->refcnt)); in cgroup_apply_control_disable()
3162 if (!css) in cgroup_apply_control_disable()
3165 if (css->parent && in cgroup_apply_control_disable()
3167 kill_css(css); in cgroup_apply_control_disable()
3168 } else if (!css_visible(css)) { in cgroup_apply_control_disable()
3169 css_clear_dir(css); in cgroup_apply_control_disable()
3171 ss->css_reset(css); in cgroup_apply_control_disable()
3574 struct cgroup_subsys_state *css; in cgroup_extra_stat_show() local
3580 css = cgroup_tryget_css(cgrp, ss); in cgroup_extra_stat_show()
3581 if (!css) in cgroup_extra_stat_show()
3584 ret = ss->css_extra_stat_show(seq, css); in cgroup_extra_stat_show()
3585 css_put(css); in cgroup_extra_stat_show()
3740 struct cgroup_subsys_state *css; in cgroup_file_write() local
3764 css = cgroup_css(cgrp, cft->ss); in cgroup_file_write()
3771 ret = cft->write_u64(css, cft, v); in cgroup_file_write()
3776 ret = cft->write_s64(css, cft, v); in cgroup_file_write()
3813 struct cgroup_subsys_state *css = seq_css(m); in cgroup_seqfile_show() local
3819 seq_printf(m, "%llu\n", cft->read_u64(css, cft)); in cgroup_seqfile_show()
3821 seq_printf(m, "%lld\n", cft->read_s64(css, cft)); in cgroup_seqfile_show()
3868 static int cgroup_add_file(struct cgroup_subsys_state *css, struct cgroup *cgrp, in cgroup_add_file() argument
3894 struct cgroup_file *cfile = (void *)css + cft->file_offset; in cgroup_add_file()
3916 static int cgroup_addrm_files(struct cgroup_subsys_state *css, in cgroup_addrm_files() argument
3939 ret = cgroup_add_file(css, cgrp, cft); in cgroup_addrm_files()
3958 struct cgroup_subsys_state *css; in cgroup_apply_cftypes() local
3964 css_for_each_descendant_pre(css, cgroup_css(root, ss)) { in cgroup_apply_cftypes()
3965 struct cgroup *cgrp = css->cgroup; in cgroup_apply_cftypes()
3967 if (!(css->flags & CSS_VISIBLE)) in cgroup_apply_cftypes()
3970 ret = cgroup_addrm_files(css, cgrp, cfts, is_add); in cgroup_apply_cftypes()
4374 bool css_has_online_children(struct cgroup_subsys_state *css) in css_has_online_children() argument
4380 css_for_each_child(child, css) { in css_has_online_children()
4568 void css_task_iter_start(struct cgroup_subsys_state *css, unsigned int flags, in css_task_iter_start() argument
4578 it->ss = css->ss; in css_task_iter_start()
4582 it->cset_pos = &css->cgroup->e_csets[css->ss->id]; in css_task_iter_start()
4584 it->cset_pos = &css->cgroup->cset_links; in css_task_iter_start()
4955 struct cgroup_subsys_state *css = container_of(to_rcu_work(work), in css_free_rwork_fn() local
4957 struct cgroup_subsys *ss = css->ss; in css_free_rwork_fn()
4958 struct cgroup *cgrp = css->cgroup; in css_free_rwork_fn()
4960 percpu_ref_exit(&css->refcnt); in css_free_rwork_fn()
4964 struct cgroup_subsys_state *parent = css->parent; in css_free_rwork_fn()
4965 int id = css->id; in css_free_rwork_fn()
4967 ss->css_free(css); in css_free_rwork_fn()
5005 struct cgroup_subsys_state *css = in css_release_work_fn() local
5007 struct cgroup_subsys *ss = css->ss; in css_release_work_fn()
5008 struct cgroup *cgrp = css->cgroup; in css_release_work_fn()
5012 css->flags |= CSS_RELEASED; in css_release_work_fn()
5013 list_del_rcu(&css->sibling); in css_release_work_fn()
5017 if (!list_empty(&css->rstat_css_node)) { in css_release_work_fn()
5019 list_del_rcu(&css->rstat_css_node); in css_release_work_fn()
5022 cgroup_idr_replace(&ss->css_idr, NULL, css->id); in css_release_work_fn()
5024 ss->css_released(css); in css_release_work_fn()
5057 INIT_RCU_WORK(&css->destroy_rwork, css_free_rwork_fn); in css_release_work_fn()
5058 queue_rcu_work(cgroup_destroy_wq, &css->destroy_rwork); in css_release_work_fn()
5063 struct cgroup_subsys_state *css = in css_release() local
5066 INIT_WORK(&css->destroy_work, css_release_work_fn); in css_release()
5067 queue_work(cgroup_destroy_wq, &css->destroy_work); in css_release()
5070 static void init_and_link_css(struct cgroup_subsys_state *css, in init_and_link_css() argument
5077 memset(css, 0, sizeof(*css)); in init_and_link_css()
5078 css->cgroup = cgrp; in init_and_link_css()
5079 css->ss = ss; in init_and_link_css()
5080 css->id = -1; in init_and_link_css()
5081 INIT_LIST_HEAD(&css->sibling); in init_and_link_css()
5082 INIT_LIST_HEAD(&css->children); in init_and_link_css()
5083 INIT_LIST_HEAD(&css->rstat_css_node); in init_and_link_css()
5084 css->serial_nr = css_serial_nr_next++; in init_and_link_css()
5085 atomic_set(&css->online_cnt, 0); in init_and_link_css()
5088 css->parent = cgroup_css(cgroup_parent(cgrp), ss); in init_and_link_css()
5089 css_get(css->parent); in init_and_link_css()
5093 list_add_rcu(&css->rstat_css_node, &cgrp->rstat_css_list); in init_and_link_css()
5099 static int online_css(struct cgroup_subsys_state *css) in online_css() argument
5101 struct cgroup_subsys *ss = css->ss; in online_css()
5107 ret = ss->css_online(css); in online_css()
5109 css->flags |= CSS_ONLINE; in online_css()
5110 rcu_assign_pointer(css->cgroup->subsys[ss->id], css); in online_css()
5112 atomic_inc(&css->online_cnt); in online_css()
5113 if (css->parent) in online_css()
5114 atomic_inc(&css->parent->online_cnt); in online_css()
5120 static void offline_css(struct cgroup_subsys_state *css) in offline_css() argument
5122 struct cgroup_subsys *ss = css->ss; in offline_css()
5126 if (!(css->flags & CSS_ONLINE)) in offline_css()
5130 ss->css_offline(css); in offline_css()
5132 css->flags &= ~CSS_ONLINE; in offline_css()
5133 RCU_INIT_POINTER(css->cgroup->subsys[ss->id], NULL); in offline_css()
5135 wake_up_all(&css->cgroup->offline_waitq); in offline_css()
5152 struct cgroup_subsys_state *css; in css_create() local
5157 css = ss->css_alloc(parent_css); in css_create()
5158 if (!css) in css_create()
5159 css = ERR_PTR(-ENOMEM); in css_create()
5160 if (IS_ERR(css)) in css_create()
5161 return css; in css_create()
5163 init_and_link_css(css, ss, cgrp); in css_create()
5165 err = percpu_ref_init(&css->refcnt, css_release, 0, GFP_KERNEL); in css_create()
5172 css->id = err; in css_create()
5175 list_add_tail_rcu(&css->sibling, &parent_css->children); in css_create()
5176 cgroup_idr_replace(&ss->css_idr, css, css->id); in css_create()
5178 err = online_css(css); in css_create()
5191 return css; in css_create()
5194 list_del_rcu(&css->sibling); in css_create()
5196 list_del_rcu(&css->rstat_css_node); in css_create()
5197 INIT_RCU_WORK(&css->destroy_rwork, css_free_rwork_fn); in css_create()
5198 queue_rcu_work(cgroup_destroy_wq, &css->destroy_rwork); in css_create()
5428 struct cgroup_subsys_state *css = in css_killed_work_fn() local
5434 offline_css(css); in css_killed_work_fn()
5435 css_put(css); in css_killed_work_fn()
5437 css = css->parent; in css_killed_work_fn()
5438 } while (css && atomic_dec_and_test(&css->online_cnt)); in css_killed_work_fn()
5446 struct cgroup_subsys_state *css = in css_killed_ref_fn() local
5449 if (atomic_dec_and_test(&css->online_cnt)) { in css_killed_ref_fn()
5450 INIT_WORK(&css->destroy_work, css_killed_work_fn); in css_killed_ref_fn()
5451 queue_work(cgroup_destroy_wq, &css->destroy_work); in css_killed_ref_fn()
5464 static void kill_css(struct cgroup_subsys_state *css) in kill_css() argument
5468 if (css->flags & CSS_DYING) in kill_css()
5471 css->flags |= CSS_DYING; in kill_css()
5477 css_clear_dir(css); in kill_css()
5483 css_get(css); in kill_css()
5495 percpu_ref_kill_and_confirm(&css->refcnt, css_killed_ref_fn); in kill_css()
5526 struct cgroup_subsys_state *css; in cgroup_destroy_locked() local
5561 for_each_css(css, ssid, cgrp) in cgroup_destroy_locked()
5562 kill_css(css); in cgroup_destroy_locked()
5620 struct cgroup_subsys_state *css; in cgroup_init_subsys() local
5631 css = ss->css_alloc(cgroup_css(&cgrp_dfl_root.cgrp, ss)); in cgroup_init_subsys()
5633 BUG_ON(IS_ERR(css)); in cgroup_init_subsys()
5634 init_and_link_css(css, ss, &cgrp_dfl_root.cgrp); in cgroup_init_subsys()
5640 css->flags |= CSS_NO_REF; in cgroup_init_subsys()
5644 css->id = 1; in cgroup_init_subsys()
5646 css->id = cgroup_idr_alloc(&ss->css_idr, css, 1, 2, GFP_KERNEL); in cgroup_init_subsys()
5647 BUG_ON(css->id < 0); in cgroup_init_subsys()
5654 init_css_set.subsys[ss->id] = css; in cgroup_init_subsys()
5666 BUG_ON(online_css(css)); in cgroup_init_subsys()
5750 struct cgroup_subsys_state *css = in cgroup_init() local
5753 css->id = cgroup_idr_alloc(&ss->css_idr, css, 1, 2, in cgroup_init()
5755 BUG_ON(css->id < 0); in cgroup_init()
6191 struct cgroup_subsys_state *css = NULL; in css_tryget_online_from_dir() local
6208 css = cgroup_css(cgrp, ss); in css_tryget_online_from_dir()
6210 if (!css || !css_tryget_online(css)) in css_tryget_online_from_dir()
6211 css = ERR_PTR(-ENOENT); in css_tryget_online_from_dir()
6214 return css; in css_tryget_online_from_dir()
6276 struct cgroup_subsys_state *css; in cgroup_get_from_fd() local
6284 css = css_tryget_online_from_dir(f->f_path.dentry, NULL); in cgroup_get_from_fd()
6286 if (IS_ERR(css)) in cgroup_get_from_fd()
6287 return ERR_CAST(css); in cgroup_get_from_fd()
6289 cgrp = css->cgroup; in cgroup_get_from_fd()