211 /* some controllers can be threaded on the default hierarchy */
401 /* can @cgrp host both domain and threaded children? */
419 	/* domain roots can't be nested under threaded */  in cgroup_can_be_thread_root()
423 	/* can only have either domain or threaded children */  in cgroup_can_be_thread_root()
434 /* is @cgrp root of a threaded subtree? */
441 	/* a domain w/ threaded children is a thread root */  in cgroup_is_thread_root()
446 	 * A domain which has tasks and explicit threaded controllers  in cgroup_is_thread_root()
483 		/* threaded cgroups can only have threaded controllers */  in cgroup_control()
503 		/* threaded cgroups can only have threaded controllers */  in cgroup_ss_mask()
1300 	 * If @cset should be threaded, look up the matching dom_cset and  in find_css_set()
2795  * and threaded cgroups, subtree_control must be zero for migration
2811 	 * threaded, it doesn't matter.  in cgroup_migrate_vet_dst()
3522 		 * Threaded controllers can handle internal competitions  in cgroup_vet_subtree_control_enable()
3637  * cgroup_enable_threaded - make @cgrp threaded
3640  * Called when "threaded" is written to the cgroup.type interface file and
3641  * tries to make @cgrp threaded and join the parent's resource domain.
3655 	/* noop if already threaded */  in cgroup_enable_threaded()
3697 		seq_puts(seq, "threaded\n");  in cgroup_type_show()
3701 		seq_puts(seq, "domain threaded\n");  in cgroup_type_show()
3714 	/* only switching to threaded mode is supported */  in cgroup_type_write()
3715 	if (strcmp(strstrip(buf), "threaded"))  in cgroup_type_write()
3718 	/* drain dying csses before we re-apply (threaded) subtree control */  in cgroup_type_write()
3723 	/* threaded can only be enabled */  in cgroup_type_write()
4237 	 * writable in non-threaded cgroups.  in cgroup_kill_write()
4966 	/* find the next threaded cset */  in css_task_iter_next_css_set()
4996 	/* initialize threaded css_set walking */  in css_task_iter_next_css_set()
5279 	 * All processes of a threaded subtree belong to the domain cgroup  in cgroup_procs_start()
6411 		/* implicit controllers must be threaded too */  in cgroup_init()
6412 		WARN_ON(ss->implicit_on_dfl && !ss->threaded);  in cgroup_init()
6419 		if (ss->threaded)  in cgroup_init()