cpuset_init(9)

🌸 cpuset_init(9) — the Kernel API Manual glow-up ✨

ok so bestie, welcome to the Kernel API Manual entry for cpuset_init — yes it's a real one, yes it's from the kernel's cgroup squad, and yes we're gonna get through it together 💖

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✨ NAME ✨

cpuset_init — literally the function that initializes cpusets at system boot 🎀

🦋 SYNOPSIS 🦋

int cpuset_init (void );

🎀 ARGUMENTS 🎀

• void — no arguments. that's it. nothing. zero. the void is voiding 🙈

💅 DESCRIPTION 💅

ok so the whole entire job of this function? initialize top_cpuset. that's the tea ☕ that's the assignment. it does that one thing and it slays at it 👑

no cap, it's a one-liner of a description because the function is doing exactly what it says on the tin — boot time comes around, cpuset_init shows up, top_cpuset gets initialized, main character energy fr fr 🌟

lowkey the shortest DESCRIPTION ever and honestly? iconic. not every function needs a whole saga 💀

🌈 SEE ALSO 🌈

Kernel file ./kernel/cgroup/cpuset.c — plus the whole bestie group chat of related calls, all listed so you don't have to go hunting 🫶

• cpuset_lock(9)
• cpuset_full_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_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)

like. thirty-six besties. a whole friend group. iykyk 😭💜

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ok that's the whole page bestie, go forth and initialize responsibly 🌸

signing off from ./kernel/cgroup, dated October 2026, straight out of the Kernel API Manual — mwah, love u, bye 💋🎀