cgroup_task_exit(9)

💖 cgroup_task_exit(9) — like, the Kernel API Manual page, bestie 💖

Okay so welcome to the cgroup_task_exit(9) page from the Kernel API Manual, and ngl this one is short but it's important, so pay attention 🫶

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✨ NAME ✨

cgroup_task_exit — detach cgroup from exiting task 💅

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🌸 SYNOPSIS 🌸

void cgroup_task_exit (struct task_struct *tsk );

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🎀 ARGUMENTS 🎀

• tsk — pointer to the task_struct of the exiting process, bestie 👑

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🦋 DESCRIPTION 🦋

Detach cgroup from tsk. That's it. That's the whole vibe. The task is on its way out the door 🚪✨ and this function is the one that unhooks its cgroup situation on the way. Iconic, lowkey, minimal.

Fr fr, that's the entire description in the original — no extra lore, no hidden side quests. Don't go reading into it 💀

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🔥 SEE ALSO 🔥

Bestie. Sit down. This list is long and we are getting through all of it, no skips, no "etc." 🙈

Kernel file ./kernel/cgroup/cgroup.c plus this whole 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_enable_threaded(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)
• 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)

Like I said. The whole squad. Go read them if you want the full cgroup cinematic universe 🍓

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Mwah 💜 that's the page! This lil beauty lives in the kernel source tree at ./kernel/cgroup and it's dated October 2026 — so yeah, mark your calendars, bestie, that's the version we're rocking with ✨🎀