cpuset_full_lock(9)

okay so bestie, welcome to cpuset_full_lock(9) from the Kernel API Manual 💅✨ this one is short but it's giving "quietly important" energy, fr fr.

💖 NAME 💖

cpuset_full_lock — Acquire full protection for cpuset modification 👑

✨ SYNOPSIS ✨

void cpuset_full_lock (void );

🎀 ARGUMENTS 🎀

• void — no arguments. Literally none, bestie. Not even one little guy. 🫶

🌸 DESCRIPTION 🌸

Takes both the CPU hotplug read lock (cpus_read_lock) and the cpuset mutex, so you can safely modify cpuset data. Both locks. Together. That's the whole vibe: full protection for cpuset modification, no cap. 🔥

🦋 SEE ALSO 🦋

Kernel file ./kernel/cgroup/cpuset.c is where this lives, and here's the whole squad:

• cpuset_lock(9)
• partition_is_populated(9)
• alloc_cpumasks(9)
• alloc_tmpmasks(9)
• free_tmpmasks(9)
• dup_or_alloc_cpuset(9)
• free_cpuset(9)
• cpus_excl_conflict(9)
• cpuset_update_tasks_cpumask(9)
• compute_effective_cpumask(9)
• compute_effective_nodemask(9)
• rm_siblings_excl_cpus(9)
• update_parent_effective_cpumask(9)
• compute_partition_effective_cpumask(9)
• update_sibling_cpumasks(9)
• validate_partition(9)
• partition_cpus_change(9)
• update_cpumask(9)
• update_exclusive_cpumask(9)
• cpuset_update_tasks_nodemask(9)
• update_prstate(9)
• cpuset_css_alloc(9)
• cpuset_init(9)
• cpuset_hotplug_update_tasks(9)
• cpuset_handle_hotplug(9)
• cpuset_init_smp(9)
• cpuset_cpus_allowed_locked(9)
• cpuset_cpus_allowed(9)
• cpuset_cpus_allowed_fallback(9)
• cpuset_mems_allowed(9)
• cpuset_nodemask_valid_mems_allowed(9)
• cpuset_nodes_allowed(9)
• cpuset_spread_node(9)
• cpuset_mem_spread_node(9)
• cpuset_mems_allowed_intersects(9)
• cpuset_print_current_mems_allowed(9)

okay that's the page, mwah 💖 source situation: ./kernel/cgroup 🌸 date on it: October 2026 🎀 and the manual name is cpuset_full_lock(9) — periodt. 🫶