cgroup_enable_threaded(9)
okay bestie, welcome to cgroup_enable_threaded(9) from the Kernel API Manual β this is the little kernel function that makes a cgroup go threaded, and we're gonna read it together like a group chat π
β¨
πΈ NAME πΈ
cgroup_enable_threaded β make @cgrp threaded. that's the whole name, no cap.
β¨ SYNOPSIS β¨
int cgroup_enable_threaded (struct cgroup *cgrp );
π ARGUMENTS π
cgrpβ the target cgroup. like, the one you're trying to make threaded, bestie π―
π DESCRIPTION π
So here's the vibe: this function is called when "threaded" is written to the cgroup.type interface file. It tries to make cgrp threaded and join the parent's resource domain. that's the mission, fr fr.
Heads up: this function is never called on the root cgroup, because cgroup.type doesn't exist on it. not even a little. no cap π
π¦ SEE ALSO π¦
Kernel file ./kernel/cgroup/cgroup.c, plus this whole iconic squad:
cgroup_ssid_enabled(9)cgroup_on_dfl(9)cgroup_e_css_by_mask(9)cgroup_e_css(9)cgroup_get_e_css(9)__cgroup_task_count(9)cgroup_task_count(9)for_each_css(9)do_each_subsys_mask(9)css_set_populated(9)css_update_populated(9)css_set_update_populated(9)css_set_move_task(9)compare_css_sets(9)find_existing_css_set(9)allocate_cgrp_cset_links(9)link_css_set(9)find_css_set(9)cgroup_file_mode(9)cgroup_calc_subtree_ss_mask(9)cgroup_kn_unlock(9)cgroup_kn_lock_live(9)css_clear_dir(9)css_populate_dir(9)cgroup_attach_lock(9)cgroup_attach_unlock(9)cgroup_migrate_add_task(9)cgroup_taskset_first(9)cgroup_taskset_next(9)cgroup_migrate_execute(9)cgroup_migrate_vet_dst(9)cgroup_migrate_finish(9)cgroup_migrate_add_src(9)cgroup_migrate_prepare_dst(9)cgroup_migrate(9)cgroup_attach_task(9)cgroup_update_dfl_csses(9)cgroup_lock_and_drain_offline(9)cgroup_save_control(9)cgroup_propagate_control(9)cgroup_restore_control(9)cgroup_apply_control_enable(9)cgroup_apply_control_disable(9)cgroup_apply_control(9)cgroup_finalize_control(9)cgroup_tryget_css(9)cgroup_addrm_files(9)cgroup_rm_cftypes(9)cgroup_add_cftypes(9)cgroup_add_dfl_cftypes(9)cgroup_add_legacy_cftypes(9)cgroup_file_notify(9)cgroup_file_show(9)css_next_child(9)css_next_descendant_pre(9)css_rightmost_descendant(9)css_next_descendant_post(9)css_has_online_children(9)css_task_iter_advance_css_set(9)css_task_iter_start(9)css_task_iter_next(9)css_task_iter_end(9)css_create(9)kill_css_sync(9)kill_css_finish(9)cgroup_destroy_locked(9)cgroup_init_early(9)cgroup_init(9)cgroup_fork(9)cgroup_v1v2_get_from_file(9)cgroup_get_from_file(9)cgroup_css_set_fork(9)cgroup_css_set_put_fork(9)cgroup_can_fork(9)cgroup_cancel_fork(9)cgroup_post_fork(9)cgroup_task_exit(9)css_tryget_online_from_dir(9)css_from_id(9)cgroup_get_from_path(9)cgroup_v1v2_get_from_fd(9)cgroup_get_from_fd(9)cgroup_parse_float(9)
cute sign-off: source/version ./kernel/cgroup, dated October 2026. bye bestie, go make that cgroup threaded π«Άπ
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms