Lines Matching refs:css
239 static void kill_css(struct cgroup_subsys_state *css);
240 static int cgroup_addrm_files(struct cgroup_subsys_state *css,
499 struct cgroup_subsys_state *css; in cgroup_tryget_css() local
502 css = cgroup_css(cgrp, ss); in cgroup_tryget_css()
503 if (css && !css_tryget_online(css)) in cgroup_tryget_css()
504 css = NULL; in cgroup_tryget_css()
507 return css; in cgroup_tryget_css()
557 struct cgroup_subsys_state *css; in cgroup_e_css() local
560 css = cgroup_css(cgrp, ss); in cgroup_e_css()
562 if (css) in cgroup_e_css()
563 return css; in cgroup_e_css()
584 struct cgroup_subsys_state *css; in cgroup_get_e_css() local
589 css = cgroup_css(cgrp, ss); in cgroup_get_e_css()
591 if (css && css_tryget_online(css)) in cgroup_get_e_css()
596 css = init_css_set.subsys[ss->id]; in cgroup_get_e_css()
597 css_get(css); in cgroup_get_e_css()
600 return css; in cgroup_get_e_css()
670 #define for_each_css(css, ssid, cgrp) \ argument
672 if (!((css) = rcu_dereference_check( \
685 #define for_each_e_css(css, ssid, cgrp) \ argument
687 if (!((css) = cgroup_e_css_by_mask(cgrp, \
935 static unsigned long css_set_hash(struct cgroup_subsys_state *css[]) in css_set_hash() argument
942 key += (unsigned long)css[i]; in css_set_hash()
1266 struct cgroup_subsys_state *css = cset->subsys[ssid]; in find_css_set() local
1269 &css->cgroup->e_csets[ssid]); in find_css_set()
1270 css_get(css); in find_css_set()
1649 struct cgroup_subsys_state *css = cgroup_css(cgrp, cft->ss); in cgroup_rm_file() local
1650 struct cgroup_file *cfile = (void *)css + cft->file_offset; in cgroup_rm_file()
1666 static void css_clear_dir(struct cgroup_subsys_state *css) in css_clear_dir() argument
1668 struct cgroup *cgrp = css->cgroup; in css_clear_dir()
1671 if (!(css->flags & CSS_VISIBLE)) in css_clear_dir()
1674 css->flags &= ~CSS_VISIBLE; in css_clear_dir()
1676 if (!css->ss) { in css_clear_dir()
1682 cgroup_addrm_files(css, cgrp, cfts, false); in css_clear_dir()
1684 list_for_each_entry(cfts, &css->ss->cfts, node) in css_clear_dir()
1685 cgroup_addrm_files(css, cgrp, cfts, false); in css_clear_dir()
1695 static int css_populate_dir(struct cgroup_subsys_state *css) in css_populate_dir() argument
1697 struct cgroup *cgrp = css->cgroup; in css_populate_dir()
1701 if ((css->flags & CSS_VISIBLE) || !cgrp->kn) in css_populate_dir()
1704 if (!css->ss) { in css_populate_dir()
1714 list_for_each_entry(cfts, &css->ss->cfts, node) { in css_populate_dir()
1715 ret = cgroup_addrm_files(css, cgrp, cfts, true); in css_populate_dir()
1723 css->flags |= CSS_VISIBLE; in css_populate_dir()
1727 list_for_each_entry(cfts, &css->ss->cfts, node) { in css_populate_dir()
1730 cgroup_addrm_files(css, cgrp, cfts, false); in css_populate_dir()
1782 struct cgroup_subsys_state *css = cgroup_css(scgrp, ss); in rebind_subsystems() local
1785 WARN_ON(!css || cgroup_css(dcgrp, ss)); in rebind_subsystems()
1796 rcu_assign_pointer(dcgrp->subsys[ssid], css); in rebind_subsystems()
1798 css->cgroup = dcgrp; in rebind_subsystems()
1821 ss->bind(css); in rebind_subsystems()
3049 struct cgroup_subsys_state *css = cgroup_css(dsct, ss); in cgroup_lock_and_drain_offline() local
3052 if (!css || !percpu_ref_is_dying(&css->refcnt)) in cgroup_lock_and_drain_offline()
3130 static bool css_visible(struct cgroup_subsys_state *css) in css_visible() argument
3132 struct cgroup_subsys *ss = css->ss; in css_visible()
3133 struct cgroup *cgrp = css->cgroup; in css_visible()
3164 struct cgroup_subsys_state *css = cgroup_css(dsct, ss); in cgroup_apply_control_enable() local
3169 if (!css) { in cgroup_apply_control_enable()
3170 css = css_create(dsct, ss); in cgroup_apply_control_enable()
3171 if (IS_ERR(css)) in cgroup_apply_control_enable()
3172 return PTR_ERR(css); in cgroup_apply_control_enable()
3175 WARN_ON_ONCE(percpu_ref_is_dying(&css->refcnt)); in cgroup_apply_control_enable()
3177 if (css_visible(css)) { in cgroup_apply_control_enable()
3178 ret = css_populate_dir(css); in cgroup_apply_control_enable()
3210 struct cgroup_subsys_state *css = cgroup_css(dsct, ss); in cgroup_apply_control_disable() local
3212 if (!css) in cgroup_apply_control_disable()
3215 WARN_ON_ONCE(percpu_ref_is_dying(&css->refcnt)); in cgroup_apply_control_disable()
3217 if (css->parent && in cgroup_apply_control_disable()
3219 kill_css(css); in cgroup_apply_control_disable()
3220 } else if (!css_visible(css)) { in cgroup_apply_control_disable()
3221 css_clear_dir(css); in cgroup_apply_control_disable()
3223 ss->css_reset(css); in cgroup_apply_control_disable()
3627 struct cgroup_subsys_state *css; in cgroup_extra_stat_show() local
3633 css = cgroup_tryget_css(cgrp, ss); in cgroup_extra_stat_show()
3634 if (!css) in cgroup_extra_stat_show()
3637 ret = ss->css_extra_stat_show(seq, css); in cgroup_extra_stat_show()
3638 css_put(css); in cgroup_extra_stat_show()
3835 struct cgroup_subsys_state *css; in cgroup_file_write() local
3862 css = cgroup_css(cgrp, cft->ss); in cgroup_file_write()
3869 ret = cft->write_u64(css, cft, v); in cgroup_file_write()
3874 ret = cft->write_s64(css, cft, v); in cgroup_file_write()
3911 struct cgroup_subsys_state *css = seq_css(m); in cgroup_seqfile_show() local
3917 seq_printf(m, "%llu\n", cft->read_u64(css, cft)); in cgroup_seqfile_show()
3919 seq_printf(m, "%lld\n", cft->read_s64(css, cft)); in cgroup_seqfile_show()
3966 static int cgroup_add_file(struct cgroup_subsys_state *css, struct cgroup *cgrp, in cgroup_add_file() argument
3992 struct cgroup_file *cfile = (void *)css + cft->file_offset; in cgroup_add_file()
4014 static int cgroup_addrm_files(struct cgroup_subsys_state *css, in cgroup_addrm_files() argument
4039 ret = cgroup_add_file(css, cgrp, cft); in cgroup_addrm_files()
4058 struct cgroup_subsys_state *css; in cgroup_apply_cftypes() local
4064 css_for_each_descendant_pre(css, cgroup_css(root, ss)) { in cgroup_apply_cftypes()
4065 struct cgroup *cgrp = css->cgroup; in cgroup_apply_cftypes()
4067 if (!(css->flags & CSS_VISIBLE)) in cgroup_apply_cftypes()
4070 ret = cgroup_addrm_files(css, cgrp, cfts, is_add); in cgroup_apply_cftypes()
4480 bool css_has_online_children(struct cgroup_subsys_state *css) in css_has_online_children() argument
4486 css_for_each_child(child, css) { in css_has_online_children()
4678 void css_task_iter_start(struct cgroup_subsys_state *css, unsigned int flags, in css_task_iter_start() argument
4685 it->ss = css->ss; in css_task_iter_start()
4689 it->cset_pos = &css->cgroup->e_csets[css->ss->id]; in css_task_iter_start()
4691 it->cset_pos = &css->cgroup->cset_links; in css_task_iter_start()
5112 struct cgroup_subsys_state *css = container_of(to_rcu_work(work), in css_free_rwork_fn() local
5114 struct cgroup_subsys *ss = css->ss; in css_free_rwork_fn()
5115 struct cgroup *cgrp = css->cgroup; in css_free_rwork_fn()
5117 percpu_ref_exit(&css->refcnt); in css_free_rwork_fn()
5121 struct cgroup_subsys_state *parent = css->parent; in css_free_rwork_fn()
5122 int id = css->id; in css_free_rwork_fn()
5124 ss->css_free(css); in css_free_rwork_fn()
5162 struct cgroup_subsys_state *css = in css_release_work_fn() local
5164 struct cgroup_subsys *ss = css->ss; in css_release_work_fn()
5165 struct cgroup *cgrp = css->cgroup; in css_release_work_fn()
5169 css->flags |= CSS_RELEASED; in css_release_work_fn()
5170 list_del_rcu(&css->sibling); in css_release_work_fn()
5174 if (!list_empty(&css->rstat_css_node)) { in css_release_work_fn()
5176 list_del_rcu(&css->rstat_css_node); in css_release_work_fn()
5179 cgroup_idr_replace(&ss->css_idr, NULL, css->id); in css_release_work_fn()
5181 ss->css_released(css); in css_release_work_fn()
5211 INIT_RCU_WORK(&css->destroy_rwork, css_free_rwork_fn); in css_release_work_fn()
5212 queue_rcu_work(cgroup_destroy_wq, &css->destroy_rwork); in css_release_work_fn()
5217 struct cgroup_subsys_state *css = in css_release() local
5220 INIT_WORK(&css->destroy_work, css_release_work_fn); in css_release()
5221 queue_work(cgroup_destroy_wq, &css->destroy_work); in css_release()
5224 static void init_and_link_css(struct cgroup_subsys_state *css, in init_and_link_css() argument
5231 memset(css, 0, sizeof(*css)); in init_and_link_css()
5232 css->cgroup = cgrp; in init_and_link_css()
5233 css->ss = ss; in init_and_link_css()
5234 css->id = -1; in init_and_link_css()
5235 INIT_LIST_HEAD(&css->sibling); in init_and_link_css()
5236 INIT_LIST_HEAD(&css->children); in init_and_link_css()
5237 INIT_LIST_HEAD(&css->rstat_css_node); in init_and_link_css()
5238 css->serial_nr = css_serial_nr_next++; in init_and_link_css()
5239 atomic_set(&css->online_cnt, 0); in init_and_link_css()
5242 css->parent = cgroup_css(cgroup_parent(cgrp), ss); in init_and_link_css()
5243 css_get(css->parent); in init_and_link_css()
5247 list_add_rcu(&css->rstat_css_node, &cgrp->rstat_css_list); in init_and_link_css()
5253 static int online_css(struct cgroup_subsys_state *css) in online_css() argument
5255 struct cgroup_subsys *ss = css->ss; in online_css()
5261 ret = ss->css_online(css); in online_css()
5263 css->flags |= CSS_ONLINE; in online_css()
5264 rcu_assign_pointer(css->cgroup->subsys[ss->id], css); in online_css()
5266 atomic_inc(&css->online_cnt); in online_css()
5267 if (css->parent) in online_css()
5268 atomic_inc(&css->parent->online_cnt); in online_css()
5274 static void offline_css(struct cgroup_subsys_state *css) in offline_css() argument
5276 struct cgroup_subsys *ss = css->ss; in offline_css()
5280 if (!(css->flags & CSS_ONLINE)) in offline_css()
5284 ss->css_offline(css); in offline_css()
5286 css->flags &= ~CSS_ONLINE; in offline_css()
5287 RCU_INIT_POINTER(css->cgroup->subsys[ss->id], NULL); in offline_css()
5289 wake_up_all(&css->cgroup->offline_waitq); in offline_css()
5306 struct cgroup_subsys_state *css; in css_create() local
5311 css = ss->css_alloc(parent_css); in css_create()
5312 if (!css) in css_create()
5313 css = ERR_PTR(-ENOMEM); in css_create()
5314 if (IS_ERR(css)) in css_create()
5315 return css; in css_create()
5317 init_and_link_css(css, ss, cgrp); in css_create()
5319 err = percpu_ref_init(&css->refcnt, css_release, 0, GFP_KERNEL); in css_create()
5326 css->id = err; in css_create()
5329 list_add_tail_rcu(&css->sibling, &parent_css->children); in css_create()
5330 cgroup_idr_replace(&ss->css_idr, css, css->id); in css_create()
5332 err = online_css(css); in css_create()
5345 return css; in css_create()
5348 list_del_rcu(&css->sibling); in css_create()
5350 list_del_rcu(&css->rstat_css_node); in css_create()
5351 INIT_RCU_WORK(&css->destroy_rwork, css_free_rwork_fn); in css_create()
5352 queue_rcu_work(cgroup_destroy_wq, &css->destroy_rwork); in css_create()
5567 struct cgroup_subsys_state *css = in css_killed_work_fn() local
5573 offline_css(css); in css_killed_work_fn()
5574 css_put(css); in css_killed_work_fn()
5576 css = css->parent; in css_killed_work_fn()
5577 } while (css && atomic_dec_and_test(&css->online_cnt)); in css_killed_work_fn()
5585 struct cgroup_subsys_state *css = in css_killed_ref_fn() local
5588 if (atomic_dec_and_test(&css->online_cnt)) { in css_killed_ref_fn()
5589 INIT_WORK(&css->destroy_work, css_killed_work_fn); in css_killed_ref_fn()
5590 queue_work(cgroup_destroy_wq, &css->destroy_work); in css_killed_ref_fn()
5603 static void kill_css(struct cgroup_subsys_state *css) in kill_css() argument
5607 if (css->flags & CSS_DYING) in kill_css()
5610 css->flags |= CSS_DYING; in kill_css()
5616 css_clear_dir(css); in kill_css()
5622 css_get(css); in kill_css()
5634 percpu_ref_kill_and_confirm(&css->refcnt, css_killed_ref_fn); in kill_css()
5665 struct cgroup_subsys_state *css; in cgroup_destroy_locked() local
5700 for_each_css(css, ssid, cgrp) in cgroup_destroy_locked()
5701 kill_css(css); in cgroup_destroy_locked()
5759 struct cgroup_subsys_state *css; in cgroup_init_subsys() local
5770 css = ss->css_alloc(cgroup_css(&cgrp_dfl_root.cgrp, ss)); in cgroup_init_subsys()
5772 BUG_ON(IS_ERR(css)); in cgroup_init_subsys()
5773 init_and_link_css(css, ss, &cgrp_dfl_root.cgrp); in cgroup_init_subsys()
5779 css->flags |= CSS_NO_REF; in cgroup_init_subsys()
5783 css->id = 1; in cgroup_init_subsys()
5785 css->id = cgroup_idr_alloc(&ss->css_idr, css, 1, 2, GFP_KERNEL); in cgroup_init_subsys()
5786 BUG_ON(css->id < 0); in cgroup_init_subsys()
5793 init_css_set.subsys[ss->id] = css; in cgroup_init_subsys()
5805 BUG_ON(online_css(css)); in cgroup_init_subsys()
5887 struct cgroup_subsys_state *css = in cgroup_init() local
5890 css->id = cgroup_idr_alloc(&ss->css_idr, css, 1, 2, in cgroup_init()
5892 BUG_ON(css->id < 0); in cgroup_init()
6076 struct cgroup_subsys_state *css; in cgroup_get_from_file() local
6079 css = css_tryget_online_from_dir(f->f_path.dentry, NULL); in cgroup_get_from_file()
6080 if (IS_ERR(css)) in cgroup_get_from_file()
6081 return ERR_CAST(css); in cgroup_get_from_file()
6083 cgrp = css->cgroup; in cgroup_get_from_file()
6465 struct cgroup_subsys_state *css = NULL; in css_tryget_online_from_dir() local
6482 css = cgroup_css(cgrp, ss); in css_tryget_online_from_dir()
6484 if (!css || !css_tryget_online(css)) in css_tryget_online_from_dir()
6485 css = ERR_PTR(-ENOENT); in css_tryget_online_from_dir()
6488 return css; in css_tryget_online_from_dir()