alloc_cpumask_var(9)

📦 version 7.3.1, in nixpkgs unstable

💅 alloc_cpumask_var(9) — Kernel API Manual ✨

okay so bestie, welcome to the alloc_cpumask_var page, straight out of the kernel API manual 🎀

✨ NAME ✨

alloc_cpumask_var — allocate a struct cpumask 🦋

🌸 SYNOPSIS 🌸

bool alloc_cpumask_var (cpumask_var_t *mask , gfp_t flags );

🎀 ARGUMENTS 🎀

  • mask — pointer to a cpumask_var_t where the cpumask gets returned 🫶 this is where the goods land, bestie.
  • flags — GFP_ flags 💫 the usual allocation-vibe knobs.

💜 DESCRIPTION 💜

so here's the thing 👑 this function is only defined when CONFIG_CPUMASK_OFFSTACK=y. if that config isn't set, it's literally just a nop that returns a constant 1 (and it lives in <linux/cpumask.h>). no cap, that's the whole bit 🙈

also, go look at alloc_cpumask_var_node — it's giving sibling energy 🌈

⭐ RETURN ⭐

  • true when the allocation succeeded — slay 💅
  • false when it didn't — not slay 😭

🔥 SEE ALSO 🔥

Kernel file ./include/linux/cpumask.h — plus this whole iconic lineup, fr fr:

and that's the page, bestie 🧚💖 this lil icon dropped from ./include/linux back in October 2026 — dated and sourced, periodt. 🌸👑

📦 where this page comes from