cpuset_nodem...mems_allowed(9)

💅 cpuset_nodem...mems_allowed(9) — Kernel API Manual, bestie edition 🎀

okay so this is one of those tiny kernel helpers that lowkey does exactly one thing and does it slay. it lives in the Kernel API Manual, and it's basically a vibe check for NUMA nodes ✨

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✨ NAME ✨

cpuset_nodemask_valid_mems_allowed — check nodemask vs. current mems_allowed 🦋

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🌸 SYNOPSIS 🌸

int cpuset_nodemask_valid_mems_allowed (const nodemask_t *nodemask );

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💖 ARGUMENTS 💖

• nodemask — the nodemask to be checked 👀 like, the actual list of nodes you're asking about

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👑 DESCRIPTION 👑

Are any of the nodes in the nodemask allowed in current->mems_allowed?

that's it. that's the whole function. it's giving "one question, one answer, no notes" 💅

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🔥 SEE ALSO 🔥

Kernel file ./kernel/cgroup/cpuset.c plus the whole friend group:

• 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_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_nodes_allowed(9)
• cpuset_spread_node(9)
• cpuset_mem_spread_node(9)
• cpuset_mems_allowed_intersects(9)
• cpuset_print_current_mems_allowed(9)

like yes that's a lot of them but they're all iconic in their own way, no cap 🫶

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ngl bestie, if you were looking for a dramatic plot twist, this is not that page — it's a one-line boolean-ish check and it ate. periodt 💀

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kisses, this page came from the ./kernel/cgroup source, dated October 2026 — mwah 💋 see u in the next manpage, iykyk 🌈⭐