646 #define cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp)		\  argument
649 		       (dsct) = (d_css)->cgroup;			\
650 		       cgroup_is_dead(dsct); }))			\
655 #define cgroup_for_each_live_descendant_post(dsct, d_css, cgrp)		\  argument
658 		       (dsct) = (d_css)->cgroup;			\
659 		       cgroup_is_dead(dsct); }))			\
2757 	struct cgroup *dsct;  in cgroup_update_dfl_csses()  local
2767 	cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) {  in cgroup_update_dfl_csses()
2770 		list_for_each_entry(link, &dsct->cset_links, cset_link)  in cgroup_update_dfl_csses()
2771 			cgroup_migrate_add_src(link->cset, dsct, &mgctx);  in cgroup_update_dfl_csses()
2808 	struct cgroup *dsct;  in cgroup_lock_and_drain_offline()  local
2816 	cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) {  in cgroup_lock_and_drain_offline()
2818 			struct cgroup_subsys_state *css = cgroup_css(dsct, ss);  in cgroup_lock_and_drain_offline()
2824 			cgroup_get_live(dsct);  in cgroup_lock_and_drain_offline()
2825 			prepare_to_wait(&dsct->offline_waitq, &wait,  in cgroup_lock_and_drain_offline()
2830 			finish_wait(&dsct->offline_waitq, &wait);  in cgroup_lock_and_drain_offline()
2832 			cgroup_put(dsct);  in cgroup_lock_and_drain_offline()
2848 	struct cgroup *dsct;  in cgroup_save_control()  local
2851 	cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) {  in cgroup_save_control()
2852 		dsct->old_subtree_control = dsct->subtree_control;  in cgroup_save_control()
2853 		dsct->old_subtree_ss_mask = dsct->subtree_ss_mask;  in cgroup_save_control()
2854 		dsct->old_dom_cgrp = dsct->dom_cgrp;  in cgroup_save_control()
2868 	struct cgroup *dsct;  in cgroup_propagate_control()  local
2871 	cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) {  in cgroup_propagate_control()
2872 		dsct->subtree_control &= cgroup_control(dsct);  in cgroup_propagate_control()
2873 		dsct->subtree_ss_mask =  in cgroup_propagate_control()
2874 			cgroup_calc_subtree_ss_mask(dsct->subtree_control,  in cgroup_propagate_control()
2875 						    cgroup_ss_mask(dsct));  in cgroup_propagate_control()
2889 	struct cgroup *dsct;  in cgroup_restore_control()  local
2892 	cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) {  in cgroup_restore_control()
2893 		dsct->subtree_control = dsct->old_subtree_control;  in cgroup_restore_control()
2894 		dsct->subtree_ss_mask = dsct->old_subtree_ss_mask;  in cgroup_restore_control()
2895 		dsct->dom_cgrp = dsct->old_dom_cgrp;  in cgroup_restore_control()
2926 	struct cgroup *dsct;  in cgroup_apply_control_enable()  local
2931 	cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp) {  in cgroup_apply_control_enable()
2933 			struct cgroup_subsys_state *css = cgroup_css(dsct, ss);  in cgroup_apply_control_enable()
2937 			if (!(cgroup_ss_mask(dsct) & (1 << ss->id)))  in cgroup_apply_control_enable()
2941 				css = css_create(dsct, ss);  in cgroup_apply_control_enable()
2972 	struct cgroup *dsct;  in cgroup_apply_control_disable()  local
2977 	cgroup_for_each_live_descendant_post(dsct, d_css, cgrp) {  in cgroup_apply_control_disable()
2979 			struct cgroup_subsys_state *css = cgroup_css(dsct, ss);  in cgroup_apply_control_disable()
2987 			    !(cgroup_ss_mask(dsct) & (1 << ss->id))) {  in cgroup_apply_control_disable()
3203 	struct cgroup *dsct;  in cgroup_enable_threaded()  local
3234 	cgroup_for_each_live_descendant_pre(dsct, d_css, cgrp)  in cgroup_enable_threaded()
3235 		if (dsct == cgrp || cgroup_is_threaded(dsct))  in cgroup_enable_threaded()
3236 			dsct->dom_cgrp = dom_cgrp;  in cgroup_enable_threaded()