alloc_tmpmasks(9)

💅 alloc_tmpmasks — kernel API manual, bestie edition

okay so this is the alloc_tmpmasks(9) page, it lives in the kernel API manual, and it is genuinely such a small slay little function. 🎀

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✨ NAME ✨

alloc_tmpmasks — bestie, it literally just allocates temporary cpumasks for cpuset operations. that's the whole vibe. 💅

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🦋 SYNOPSIS 🦋

int alloc_tmpmasks (struct tmpmasks *tmp );

yes that's it. one argument. one int coming back at you. iconic. 🌸

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💖 ARGUMENTS 💖

• tmp — a pointer to the tmpmasks structure you want populated. like, hand it over and it gets filled in. 🫶

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🌈 RETURN 🌈

• 0 — success, we ate, everything is fine. ✨
• -ENOMEM — allocation failure 😭 the memory said no.

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👑 SEE ALSO 👑

so uh. the kernel file is ./kernel/cgroup/cpuset.c, and honestly the whole cpuset friend group shows up here. no cap, this is a long list, but every single one of them is invited to the party:

• cpuset_lock(9)
• cpuset_full_lock(9)
• partition_is_populated(9)
• alloc_cpumasks(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)

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fr fr that's the entire page. it's short, it's sweet, it allocates some temporary cpumasks, and it leaves. main character energy honestly. 💀

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okay bye bestie, this one came from ./kernel/cgroup and it's dated October 2026 — go forth and allocate responsibly 🧚💜