Lines Matching refs:css
240 static void kill_css(struct cgroup_subsys_state *css);
241 static int cgroup_addrm_files(struct cgroup_subsys_state *css,
500 struct cgroup_subsys_state *css; in cgroup_tryget_css() local
503 css = cgroup_css(cgrp, ss); in cgroup_tryget_css()
504 if (css && !css_tryget_online(css)) in cgroup_tryget_css()
505 css = NULL; in cgroup_tryget_css()
508 return css; in cgroup_tryget_css()
558 struct cgroup_subsys_state *css; in cgroup_e_css() local
561 css = cgroup_css(cgrp, ss); in cgroup_e_css()
563 if (css) in cgroup_e_css()
564 return css; in cgroup_e_css()
585 struct cgroup_subsys_state *css; in cgroup_get_e_css() local
590 css = cgroup_css(cgrp, ss); in cgroup_get_e_css()
592 if (css && css_tryget_online(css)) in cgroup_get_e_css()
597 css = init_css_set.subsys[ss->id]; in cgroup_get_e_css()
598 css_get(css); in cgroup_get_e_css()
601 return css; in cgroup_get_e_css()
671 #define for_each_css(css, ssid, cgrp) \ argument
673 if (!((css) = rcu_dereference_check( \
686 #define for_each_e_css(css, ssid, cgrp) \ argument
688 if (!((css) = cgroup_e_css_by_mask(cgrp, \
936 static unsigned long css_set_hash(struct cgroup_subsys_state *css[]) in css_set_hash() argument
943 key += (unsigned long)css[i]; in css_set_hash()
1267 struct cgroup_subsys_state *css = cset->subsys[ssid]; in find_css_set() local
1270 &css->cgroup->e_csets[ssid]); in find_css_set()
1271 css_get(css); in find_css_set()
1650 struct cgroup_subsys_state *css = cgroup_css(cgrp, cft->ss); in cgroup_rm_file() local
1651 struct cgroup_file *cfile = (void *)css + cft->file_offset; in cgroup_rm_file()
1667 static void css_clear_dir(struct cgroup_subsys_state *css) in css_clear_dir() argument
1669 struct cgroup *cgrp = css->cgroup; in css_clear_dir()
1672 if (!(css->flags & CSS_VISIBLE)) in css_clear_dir()
1675 css->flags &= ~CSS_VISIBLE; in css_clear_dir()
1677 if (!css->ss) { in css_clear_dir()
1683 cgroup_addrm_files(css, cgrp, cfts, false); in css_clear_dir()
1685 list_for_each_entry(cfts, &css->ss->cfts, node) in css_clear_dir()
1686 cgroup_addrm_files(css, cgrp, cfts, false); in css_clear_dir()
1696 static int css_populate_dir(struct cgroup_subsys_state *css) in css_populate_dir() argument
1698 struct cgroup *cgrp = css->cgroup; in css_populate_dir()
1702 if ((css->flags & CSS_VISIBLE) || !cgrp->kn) in css_populate_dir()
1705 if (!css->ss) { in css_populate_dir()
1715 list_for_each_entry(cfts, &css->ss->cfts, node) { in css_populate_dir()
1716 ret = cgroup_addrm_files(css, cgrp, cfts, true); in css_populate_dir()
1724 css->flags |= CSS_VISIBLE; in css_populate_dir()
1728 list_for_each_entry(cfts, &css->ss->cfts, node) { in css_populate_dir()
1731 cgroup_addrm_files(css, cgrp, cfts, false); in css_populate_dir()
1783 struct cgroup_subsys_state *css = cgroup_css(scgrp, ss); in rebind_subsystems() local
1787 WARN_ON(!css || cgroup_css(dcgrp, ss)); in rebind_subsystems()
1798 rcu_assign_pointer(dcgrp->subsys[ssid], css); in rebind_subsystems()
1800 css->cgroup = dcgrp; in rebind_subsystems()
1836 ss->bind(css); in rebind_subsystems()
3064 struct cgroup_subsys_state *css = cgroup_css(dsct, ss); in cgroup_lock_and_drain_offline() local
3067 if (!css || !percpu_ref_is_dying(&css->refcnt)) in cgroup_lock_and_drain_offline()
3145 static bool css_visible(struct cgroup_subsys_state *css) in css_visible() argument
3147 struct cgroup_subsys *ss = css->ss; in css_visible()
3148 struct cgroup *cgrp = css->cgroup; in css_visible()
3179 struct cgroup_subsys_state *css = cgroup_css(dsct, ss); in cgroup_apply_control_enable() local
3184 if (!css) { in cgroup_apply_control_enable()
3185 css = css_create(dsct, ss); in cgroup_apply_control_enable()
3186 if (IS_ERR(css)) in cgroup_apply_control_enable()
3187 return PTR_ERR(css); in cgroup_apply_control_enable()
3190 WARN_ON_ONCE(percpu_ref_is_dying(&css->refcnt)); in cgroup_apply_control_enable()
3192 if (css_visible(css)) { in cgroup_apply_control_enable()
3193 ret = css_populate_dir(css); in cgroup_apply_control_enable()
3225 struct cgroup_subsys_state *css = cgroup_css(dsct, ss); in cgroup_apply_control_disable() local
3227 if (!css) in cgroup_apply_control_disable()
3230 WARN_ON_ONCE(percpu_ref_is_dying(&css->refcnt)); in cgroup_apply_control_disable()
3232 if (css->parent && in cgroup_apply_control_disable()
3234 kill_css(css); in cgroup_apply_control_disable()
3235 } else if (!css_visible(css)) { in cgroup_apply_control_disable()
3236 css_clear_dir(css); in cgroup_apply_control_disable()
3238 ss->css_reset(css); in cgroup_apply_control_disable()
3642 struct cgroup_subsys_state *css; in cgroup_extra_stat_show() local
3648 css = cgroup_tryget_css(cgrp, ss); in cgroup_extra_stat_show()
3649 if (!css) in cgroup_extra_stat_show()
3652 ret = ss->css_extra_stat_show(seq, css); in cgroup_extra_stat_show()
3653 css_put(css); in cgroup_extra_stat_show()
3850 struct cgroup_subsys_state *css; in cgroup_file_write() local
3877 css = cgroup_css(cgrp, cft->ss); in cgroup_file_write()
3884 ret = cft->write_u64(css, cft, v); in cgroup_file_write()
3889 ret = cft->write_s64(css, cft, v); in cgroup_file_write()
3926 struct cgroup_subsys_state *css = seq_css(m); in cgroup_seqfile_show() local
3932 seq_printf(m, "%llu\n", cft->read_u64(css, cft)); in cgroup_seqfile_show()
3934 seq_printf(m, "%lld\n", cft->read_s64(css, cft)); in cgroup_seqfile_show()
3981 static int cgroup_add_file(struct cgroup_subsys_state *css, struct cgroup *cgrp, in cgroup_add_file() argument
4007 struct cgroup_file *cfile = (void *)css + cft->file_offset; in cgroup_add_file()
4029 static int cgroup_addrm_files(struct cgroup_subsys_state *css, in cgroup_addrm_files() argument
4054 ret = cgroup_add_file(css, cgrp, cft); in cgroup_addrm_files()
4073 struct cgroup_subsys_state *css; in cgroup_apply_cftypes() local
4079 css_for_each_descendant_pre(css, cgroup_css(root, ss)) { in cgroup_apply_cftypes()
4080 struct cgroup *cgrp = css->cgroup; in cgroup_apply_cftypes()
4082 if (!(css->flags & CSS_VISIBLE)) in cgroup_apply_cftypes()
4085 ret = cgroup_addrm_files(css, cgrp, cfts, is_add); in cgroup_apply_cftypes()
4496 bool css_has_online_children(struct cgroup_subsys_state *css) in css_has_online_children() argument
4502 css_for_each_child(child, css) { in css_has_online_children()
4694 void css_task_iter_start(struct cgroup_subsys_state *css, unsigned int flags, in css_task_iter_start() argument
4701 it->ss = css->ss; in css_task_iter_start()
4705 it->cset_pos = &css->cgroup->e_csets[css->ss->id]; in css_task_iter_start()
4707 it->cset_pos = &css->cgroup->cset_links; in css_task_iter_start()
5128 struct cgroup_subsys_state *css = container_of(to_rcu_work(work), in css_free_rwork_fn() local
5130 struct cgroup_subsys *ss = css->ss; in css_free_rwork_fn()
5131 struct cgroup *cgrp = css->cgroup; in css_free_rwork_fn()
5133 percpu_ref_exit(&css->refcnt); in css_free_rwork_fn()
5137 struct cgroup_subsys_state *parent = css->parent; in css_free_rwork_fn()
5138 int id = css->id; in css_free_rwork_fn()
5140 ss->css_free(css); in css_free_rwork_fn()
5178 struct cgroup_subsys_state *css = in css_release_work_fn() local
5180 struct cgroup_subsys *ss = css->ss; in css_release_work_fn()
5181 struct cgroup *cgrp = css->cgroup; in css_release_work_fn()
5185 css->flags |= CSS_RELEASED; in css_release_work_fn()
5186 list_del_rcu(&css->sibling); in css_release_work_fn()
5190 if (!list_empty(&css->rstat_css_node)) { in css_release_work_fn()
5192 list_del_rcu(&css->rstat_css_node); in css_release_work_fn()
5195 cgroup_idr_replace(&ss->css_idr, NULL, css->id); in css_release_work_fn()
5197 ss->css_released(css); in css_release_work_fn()
5227 INIT_RCU_WORK(&css->destroy_rwork, css_free_rwork_fn); in css_release_work_fn()
5228 queue_rcu_work(cgroup_destroy_wq, &css->destroy_rwork); in css_release_work_fn()
5233 struct cgroup_subsys_state *css = in css_release() local
5236 INIT_WORK(&css->destroy_work, css_release_work_fn); in css_release()
5237 queue_work(cgroup_destroy_wq, &css->destroy_work); in css_release()
5240 static void init_and_link_css(struct cgroup_subsys_state *css, in init_and_link_css() argument
5247 memset(css, 0, sizeof(*css)); in init_and_link_css()
5248 css->cgroup = cgrp; in init_and_link_css()
5249 css->ss = ss; in init_and_link_css()
5250 css->id = -1; in init_and_link_css()
5251 INIT_LIST_HEAD(&css->sibling); in init_and_link_css()
5252 INIT_LIST_HEAD(&css->children); in init_and_link_css()
5253 INIT_LIST_HEAD(&css->rstat_css_node); in init_and_link_css()
5254 css->serial_nr = css_serial_nr_next++; in init_and_link_css()
5255 atomic_set(&css->online_cnt, 0); in init_and_link_css()
5258 css->parent = cgroup_css(cgroup_parent(cgrp), ss); in init_and_link_css()
5259 css_get(css->parent); in init_and_link_css()
5263 list_add_rcu(&css->rstat_css_node, &cgrp->rstat_css_list); in init_and_link_css()
5269 static int online_css(struct cgroup_subsys_state *css) in online_css() argument
5271 struct cgroup_subsys *ss = css->ss; in online_css()
5277 ret = ss->css_online(css); in online_css()
5279 css->flags |= CSS_ONLINE; in online_css()
5280 rcu_assign_pointer(css->cgroup->subsys[ss->id], css); in online_css()
5282 atomic_inc(&css->online_cnt); in online_css()
5283 if (css->parent) in online_css()
5284 atomic_inc(&css->parent->online_cnt); in online_css()
5290 static void offline_css(struct cgroup_subsys_state *css) in offline_css() argument
5292 struct cgroup_subsys *ss = css->ss; in offline_css()
5296 if (!(css->flags & CSS_ONLINE)) in offline_css()
5300 ss->css_offline(css); in offline_css()
5302 css->flags &= ~CSS_ONLINE; in offline_css()
5303 RCU_INIT_POINTER(css->cgroup->subsys[ss->id], NULL); in offline_css()
5305 wake_up_all(&css->cgroup->offline_waitq); in offline_css()
5322 struct cgroup_subsys_state *css; in css_create() local
5327 css = ss->css_alloc(parent_css); in css_create()
5328 if (!css) in css_create()
5329 css = ERR_PTR(-ENOMEM); in css_create()
5330 if (IS_ERR(css)) in css_create()
5331 return css; in css_create()
5333 init_and_link_css(css, ss, cgrp); in css_create()
5335 err = percpu_ref_init(&css->refcnt, css_release, 0, GFP_KERNEL); in css_create()
5342 css->id = err; in css_create()
5345 list_add_tail_rcu(&css->sibling, &parent_css->children); in css_create()
5346 cgroup_idr_replace(&ss->css_idr, css, css->id); in css_create()
5348 err = online_css(css); in css_create()
5361 return css; in css_create()
5364 list_del_rcu(&css->sibling); in css_create()
5366 list_del_rcu(&css->rstat_css_node); in css_create()
5367 INIT_RCU_WORK(&css->destroy_rwork, css_free_rwork_fn); in css_create()
5368 queue_rcu_work(cgroup_destroy_wq, &css->destroy_rwork); in css_create()
5583 struct cgroup_subsys_state *css = in css_killed_work_fn() local
5589 offline_css(css); in css_killed_work_fn()
5590 css_put(css); in css_killed_work_fn()
5592 css = css->parent; in css_killed_work_fn()
5593 } while (css && atomic_dec_and_test(&css->online_cnt)); in css_killed_work_fn()
5601 struct cgroup_subsys_state *css = in css_killed_ref_fn() local
5604 if (atomic_dec_and_test(&css->online_cnt)) { in css_killed_ref_fn()
5605 INIT_WORK(&css->destroy_work, css_killed_work_fn); in css_killed_ref_fn()
5606 queue_work(cgroup_destroy_wq, &css->destroy_work); in css_killed_ref_fn()
5619 static void kill_css(struct cgroup_subsys_state *css) in kill_css() argument
5623 if (css->flags & CSS_DYING) in kill_css()
5626 css->flags |= CSS_DYING; in kill_css()
5632 css_clear_dir(css); in kill_css()
5638 css_get(css); in kill_css()
5650 percpu_ref_kill_and_confirm(&css->refcnt, css_killed_ref_fn); in kill_css()
5681 struct cgroup_subsys_state *css; in cgroup_destroy_locked() local
5716 for_each_css(css, ssid, cgrp) in cgroup_destroy_locked()
5717 kill_css(css); in cgroup_destroy_locked()
5775 struct cgroup_subsys_state *css; in cgroup_init_subsys() local
5786 css = ss->css_alloc(cgroup_css(&cgrp_dfl_root.cgrp, ss)); in cgroup_init_subsys()
5788 BUG_ON(IS_ERR(css)); in cgroup_init_subsys()
5789 init_and_link_css(css, ss, &cgrp_dfl_root.cgrp); in cgroup_init_subsys()
5795 css->flags |= CSS_NO_REF; in cgroup_init_subsys()
5799 css->id = 1; in cgroup_init_subsys()
5801 css->id = cgroup_idr_alloc(&ss->css_idr, css, 1, 2, GFP_KERNEL); in cgroup_init_subsys()
5802 BUG_ON(css->id < 0); in cgroup_init_subsys()
5809 init_css_set.subsys[ss->id] = css; in cgroup_init_subsys()
5821 BUG_ON(online_css(css)); in cgroup_init_subsys()
5903 struct cgroup_subsys_state *css = in cgroup_init() local
5906 css->id = cgroup_idr_alloc(&ss->css_idr, css, 1, 2, in cgroup_init()
5908 BUG_ON(css->id < 0); in cgroup_init()
6092 struct cgroup_subsys_state *css; in cgroup_get_from_file() local
6095 css = css_tryget_online_from_dir(f->f_path.dentry, NULL); in cgroup_get_from_file()
6096 if (IS_ERR(css)) in cgroup_get_from_file()
6097 return ERR_CAST(css); in cgroup_get_from_file()
6099 cgrp = css->cgroup; in cgroup_get_from_file()
6483 struct cgroup_subsys_state *css = NULL; in css_tryget_online_from_dir() local
6500 css = cgroup_css(cgrp, ss); in css_tryget_online_from_dir()
6502 if (!css || !css_tryget_online(css)) in css_tryget_online_from_dir()
6503 css = ERR_PTR(-ENOENT); in css_tryget_online_from_dir()
6506 return css; in css_tryget_online_from_dir()