Lines Matching refs:css
246 static void kill_css(struct cgroup_subsys_state *css);
247 static int cgroup_addrm_files(struct cgroup_subsys_state *css,
501 struct cgroup_subsys_state *css; in cgroup_tryget_css() local
504 css = cgroup_css(cgrp, ss); in cgroup_tryget_css()
505 if (css && !css_tryget_online(css)) in cgroup_tryget_css()
506 css = NULL; in cgroup_tryget_css()
509 return css; in cgroup_tryget_css()
559 struct cgroup_subsys_state *css; in cgroup_e_css() local
565 css = cgroup_css(cgrp, ss); in cgroup_e_css()
567 if (css) in cgroup_e_css()
568 return css; in cgroup_e_css()
589 struct cgroup_subsys_state *css; in cgroup_get_e_css() local
597 css = cgroup_css(cgrp, ss); in cgroup_get_e_css()
599 if (css && css_tryget_online(css)) in cgroup_get_e_css()
604 css = init_css_set.subsys[ss->id]; in cgroup_get_e_css()
605 css_get(css); in cgroup_get_e_css()
608 return css; in cgroup_get_e_css()
679 #define for_each_css(css, ssid, cgrp) \ argument
681 if (!((css) = rcu_dereference_check( \
694 #define for_each_e_css(css, ssid, cgrp) \ argument
696 if (!((css) = cgroup_e_css_by_mask(cgrp, \
942 static unsigned long css_set_hash(struct cgroup_subsys_state *css[]) in css_set_hash() argument
949 key += (unsigned long)css[i]; in css_set_hash()
1270 struct cgroup_subsys_state *css = cset->subsys[ssid]; in find_css_set() local
1273 &css->cgroup->e_csets[ssid]); in find_css_set()
1274 css_get(css); in find_css_set()
1683 struct cgroup_subsys_state *css = cgroup_css(cgrp, cft->ss); in cgroup_rm_file() local
1684 struct cgroup_file *cfile = (void *)css + cft->file_offset; in cgroup_rm_file()
1700 static void css_clear_dir(struct cgroup_subsys_state *css) in css_clear_dir() argument
1702 struct cgroup *cgrp = css->cgroup; in css_clear_dir()
1705 if (!(css->flags & CSS_VISIBLE)) in css_clear_dir()
1708 css->flags &= ~CSS_VISIBLE; in css_clear_dir()
1710 if (!css->ss) { 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()
1722 list_for_each_entry(cfts, &css->ss->cfts, node) in css_clear_dir()
1723 cgroup_addrm_files(css, cgrp, cfts, false); in css_clear_dir()
1733 static int css_populate_dir(struct cgroup_subsys_state *css) in css_populate_dir() argument
1735 struct cgroup *cgrp = css->cgroup; in css_populate_dir()
1739 if ((css->flags & CSS_VISIBLE) || !cgrp->kn) in css_populate_dir()
1742 if (!css->ss) { in css_populate_dir()
1756 cgroup_addrm_files(css, cgrp, in css_populate_dir()
1760 list_for_each_entry(cfts, &css->ss->cfts, node) { in css_populate_dir()
1761 ret = cgroup_addrm_files(css, cgrp, cfts, true); in css_populate_dir()
1769 css->flags |= CSS_VISIBLE; in css_populate_dir()
1773 list_for_each_entry(cfts, &css->ss->cfts, node) { in css_populate_dir()
1776 cgroup_addrm_files(css, cgrp, cfts, false); in css_populate_dir()
1828 struct cgroup_subsys_state *css = cgroup_css(scgrp, ss); in rebind_subsystems() local
1831 WARN_ON(!css || cgroup_css(dcgrp, ss)); in rebind_subsystems()
1842 rcu_assign_pointer(dcgrp->subsys[ssid], css); in rebind_subsystems()
1844 css->cgroup = dcgrp; in rebind_subsystems()
1853 list_del_rcu(&css->rstat_css_node); in rebind_subsystems()
1855 list_add_rcu(&css->rstat_css_node, in rebind_subsystems()
1874 ss->bind(css); in rebind_subsystems()
3114 struct cgroup_subsys_state *css = cgroup_css(dsct, ss); in cgroup_lock_and_drain_offline() local
3117 if (!css || !percpu_ref_is_dying(&css->refcnt)) in cgroup_lock_and_drain_offline()
3195 static bool css_visible(struct cgroup_subsys_state *css) in css_visible() argument
3197 struct cgroup_subsys *ss = css->ss; in css_visible()
3198 struct cgroup *cgrp = css->cgroup; in css_visible()
3229 struct cgroup_subsys_state *css = cgroup_css(dsct, ss); in cgroup_apply_control_enable() local
3234 if (!css) { in cgroup_apply_control_enable()
3235 css = css_create(dsct, ss); in cgroup_apply_control_enable()
3236 if (IS_ERR(css)) in cgroup_apply_control_enable()
3237 return PTR_ERR(css); in cgroup_apply_control_enable()
3240 WARN_ON_ONCE(percpu_ref_is_dying(&css->refcnt)); in cgroup_apply_control_enable()
3242 if (css_visible(css)) { in cgroup_apply_control_enable()
3243 ret = css_populate_dir(css); in cgroup_apply_control_enable()
3275 struct cgroup_subsys_state *css = cgroup_css(dsct, ss); in cgroup_apply_control_disable() local
3277 if (!css) in cgroup_apply_control_disable()
3280 WARN_ON_ONCE(percpu_ref_is_dying(&css->refcnt)); in cgroup_apply_control_disable()
3282 if (css->parent && in cgroup_apply_control_disable()
3284 kill_css(css); in cgroup_apply_control_disable()
3285 } else if (!css_visible(css)) { in cgroup_apply_control_disable()
3286 css_clear_dir(css); in cgroup_apply_control_disable()
3288 ss->css_reset(css); in cgroup_apply_control_disable()
3688 struct cgroup_subsys_state *css; in cgroup_extra_stat_show() local
3694 css = cgroup_tryget_css(cgrp, ss); in cgroup_extra_stat_show()
3695 if (!css) in cgroup_extra_stat_show()
3698 ret = ss->css_extra_stat_show(seq, css); in cgroup_extra_stat_show()
3699 css_put(css); in cgroup_extra_stat_show()
3955 struct cgroup_subsys_state *css; in cgroup_kill() local
3960 cgroup_for_each_live_descendant_pre(dsct, css, cgrp) in cgroup_kill()
4039 struct cgroup_subsys_state *css; in cgroup_file_write() local
4066 css = cgroup_css(cgrp, cft->ss); in cgroup_file_write()
4073 ret = cft->write_u64(css, cft, v); in cgroup_file_write()
4078 ret = cft->write_s64(css, cft, v); in cgroup_file_write()
4115 struct cgroup_subsys_state *css = seq_css(m); in cgroup_seqfile_show() local
4121 seq_printf(m, "%llu\n", cft->read_u64(css, cft)); in cgroup_seqfile_show()
4123 seq_printf(m, "%lld\n", cft->read_s64(css, cft)); in cgroup_seqfile_show()
4170 static int cgroup_add_file(struct cgroup_subsys_state *css, struct cgroup *cgrp, in cgroup_add_file() argument
4196 struct cgroup_file *cfile = (void *)css + cft->file_offset; in cgroup_add_file()
4218 static int cgroup_addrm_files(struct cgroup_subsys_state *css, in cgroup_addrm_files() argument
4241 ret = cgroup_add_file(css, cgrp, cft); in cgroup_addrm_files()
4260 struct cgroup_subsys_state *css; in cgroup_apply_cftypes() local
4266 css_for_each_descendant_pre(css, cgroup_css(root, ss)) { in cgroup_apply_cftypes()
4267 struct cgroup *cgrp = css->cgroup; in cgroup_apply_cftypes()
4269 if (!(css->flags & CSS_VISIBLE)) in cgroup_apply_cftypes()
4272 ret = cgroup_addrm_files(css, cgrp, cfts, is_add); in cgroup_apply_cftypes()
4710 bool css_has_online_children(struct cgroup_subsys_state *css) in css_has_online_children() argument
4716 css_for_each_child(child, css) { in css_has_online_children()
4908 void css_task_iter_start(struct cgroup_subsys_state *css, unsigned int flags, in css_task_iter_start() argument
4915 it->ss = css->ss; in css_task_iter_start()
4919 it->cset_pos = &css->cgroup->e_csets[css->ss->id]; in css_task_iter_start()
4921 it->cset_pos = &css->cgroup->cset_links; in css_task_iter_start()
5329 struct cgroup_subsys_state *css = container_of(to_rcu_work(work), in css_free_rwork_fn() local
5331 struct cgroup_subsys *ss = css->ss; in css_free_rwork_fn()
5332 struct cgroup *cgrp = css->cgroup; in css_free_rwork_fn()
5334 percpu_ref_exit(&css->refcnt); in css_free_rwork_fn()
5338 struct cgroup_subsys_state *parent = css->parent; in css_free_rwork_fn()
5339 int id = css->id; in css_free_rwork_fn()
5341 ss->css_free(css); in css_free_rwork_fn()
5378 struct cgroup_subsys_state *css = in css_release_work_fn() local
5380 struct cgroup_subsys *ss = css->ss; in css_release_work_fn()
5381 struct cgroup *cgrp = css->cgroup; in css_release_work_fn()
5385 css->flags |= CSS_RELEASED; in css_release_work_fn()
5386 list_del_rcu(&css->sibling); in css_release_work_fn()
5390 if (!list_empty(&css->rstat_css_node)) { in css_release_work_fn()
5392 list_del_rcu(&css->rstat_css_node); in css_release_work_fn()
5395 cgroup_idr_replace(&ss->css_idr, NULL, css->id); in css_release_work_fn()
5397 ss->css_released(css); in css_release_work_fn()
5426 INIT_RCU_WORK(&css->destroy_rwork, css_free_rwork_fn); in css_release_work_fn()
5427 queue_rcu_work(cgroup_destroy_wq, &css->destroy_rwork); in css_release_work_fn()
5432 struct cgroup_subsys_state *css = in css_release() local
5435 INIT_WORK(&css->destroy_work, css_release_work_fn); in css_release()
5436 queue_work(cgroup_destroy_wq, &css->destroy_work); in css_release()
5439 static void init_and_link_css(struct cgroup_subsys_state *css, in init_and_link_css() argument
5446 memset(css, 0, sizeof(*css)); in init_and_link_css()
5447 css->cgroup = cgrp; in init_and_link_css()
5448 css->ss = ss; in init_and_link_css()
5449 css->id = -1; in init_and_link_css()
5450 INIT_LIST_HEAD(&css->sibling); in init_and_link_css()
5451 INIT_LIST_HEAD(&css->children); in init_and_link_css()
5452 INIT_LIST_HEAD(&css->rstat_css_node); in init_and_link_css()
5453 css->serial_nr = css_serial_nr_next++; in init_and_link_css()
5454 atomic_set(&css->online_cnt, 0); in init_and_link_css()
5457 css->parent = cgroup_css(cgroup_parent(cgrp), ss); in init_and_link_css()
5458 css_get(css->parent); in init_and_link_css()
5462 list_add_rcu(&css->rstat_css_node, &cgrp->rstat_css_list); in init_and_link_css()
5468 static int online_css(struct cgroup_subsys_state *css) in online_css() argument
5470 struct cgroup_subsys *ss = css->ss; in online_css()
5476 ret = ss->css_online(css); in online_css()
5478 css->flags |= CSS_ONLINE; in online_css()
5479 rcu_assign_pointer(css->cgroup->subsys[ss->id], css); in online_css()
5481 atomic_inc(&css->online_cnt); in online_css()
5482 if (css->parent) in online_css()
5483 atomic_inc(&css->parent->online_cnt); in online_css()
5489 static void offline_css(struct cgroup_subsys_state *css) in offline_css() argument
5491 struct cgroup_subsys *ss = css->ss; in offline_css()
5495 if (!(css->flags & CSS_ONLINE)) in offline_css()
5499 ss->css_offline(css); in offline_css()
5501 css->flags &= ~CSS_ONLINE; in offline_css()
5502 RCU_INIT_POINTER(css->cgroup->subsys[ss->id], NULL); in offline_css()
5504 wake_up_all(&css->cgroup->offline_waitq); in offline_css()
5521 struct cgroup_subsys_state *css; in css_create() local
5526 css = ss->css_alloc(parent_css); in css_create()
5527 if (!css) in css_create()
5528 css = ERR_PTR(-ENOMEM); in css_create()
5529 if (IS_ERR(css)) in css_create()
5530 return css; in css_create()
5532 init_and_link_css(css, ss, cgrp); in css_create()
5534 err = percpu_ref_init(&css->refcnt, css_release, 0, GFP_KERNEL); in css_create()
5541 css->id = err; in css_create()
5544 list_add_tail_rcu(&css->sibling, &parent_css->children); in css_create()
5545 cgroup_idr_replace(&ss->css_idr, css, css->id); in css_create()
5547 err = online_css(css); in css_create()
5551 return css; in css_create()
5554 list_del_rcu(&css->sibling); in css_create()
5556 list_del_rcu(&css->rstat_css_node); in css_create()
5557 INIT_RCU_WORK(&css->destroy_rwork, css_free_rwork_fn); in css_create()
5558 queue_rcu_work(cgroup_destroy_wq, &css->destroy_rwork); in css_create()
5769 struct cgroup_subsys_state *css = in css_killed_work_fn() local
5775 offline_css(css); in css_killed_work_fn()
5776 css_put(css); in css_killed_work_fn()
5778 css = css->parent; in css_killed_work_fn()
5779 } while (css && atomic_dec_and_test(&css->online_cnt)); in css_killed_work_fn()
5787 struct cgroup_subsys_state *css = in css_killed_ref_fn() local
5790 if (atomic_dec_and_test(&css->online_cnt)) { in css_killed_ref_fn()
5791 INIT_WORK(&css->destroy_work, css_killed_work_fn); in css_killed_ref_fn()
5792 queue_work(cgroup_destroy_wq, &css->destroy_work); in css_killed_ref_fn()
5805 static void kill_css(struct cgroup_subsys_state *css) in kill_css() argument
5809 if (css->flags & CSS_DYING) in kill_css()
5812 css->flags |= CSS_DYING; in kill_css()
5818 css_clear_dir(css); in kill_css()
5824 css_get(css); in kill_css()
5836 percpu_ref_kill_and_confirm(&css->refcnt, css_killed_ref_fn); in kill_css()
5867 struct cgroup_subsys_state *css; in cgroup_destroy_locked() local
5902 for_each_css(css, ssid, cgrp) in cgroup_destroy_locked()
5903 kill_css(css); in cgroup_destroy_locked()
5961 struct cgroup_subsys_state *css; in cgroup_init_subsys() local
5972 css = ss->css_alloc(NULL); in cgroup_init_subsys()
5974 BUG_ON(IS_ERR(css)); in cgroup_init_subsys()
5975 init_and_link_css(css, ss, &cgrp_dfl_root.cgrp); in cgroup_init_subsys()
5981 css->flags |= CSS_NO_REF; in cgroup_init_subsys()
5985 css->id = 1; in cgroup_init_subsys()
5987 css->id = cgroup_idr_alloc(&ss->css_idr, css, 1, 2, GFP_KERNEL); in cgroup_init_subsys()
5988 BUG_ON(css->id < 0); in cgroup_init_subsys()
5995 init_css_set.subsys[ss->id] = css; in cgroup_init_subsys()
6007 BUG_ON(online_css(css)); in cgroup_init_subsys()
6084 struct cgroup_subsys_state *css = in cgroup_init() local
6087 css->id = cgroup_idr_alloc(&ss->css_idr, css, 1, 2, in cgroup_init()
6089 BUG_ON(css->id < 0); in cgroup_init()
6323 struct cgroup_subsys_state *css; in cgroup_v1v2_get_from_file() local
6325 css = css_tryget_online_from_dir(f->f_path.dentry, NULL); in cgroup_v1v2_get_from_file()
6326 if (IS_ERR(css)) in cgroup_v1v2_get_from_file()
6327 return ERR_CAST(css); in cgroup_v1v2_get_from_file()
6329 return css->cgroup; in cgroup_v1v2_get_from_file()
6762 struct cgroup_subsys_state *css = NULL; in css_tryget_online_from_dir() local
6779 css = cgroup_css(cgrp, ss); in css_tryget_online_from_dir()
6781 if (!css || !css_tryget_online(css)) in css_tryget_online_from_dir()
6782 css = ERR_PTR(-ENOENT); in css_tryget_online_from_dir()
6785 return css; in css_tryget_online_from_dir()