cpumask_full(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 cpumask_full — the vibe check for "is literally every CPU in here?" 👑

okay so bestie, we're in the Kernel API Manual (cpumask_full(9)) and this little function is about to ask the most main-character question of all: is this mask, like, completely full? 💅

✨ NAME ✨

cpumask_full — the one where *srcp == 0xFFFFFFFF... 🫶

🎀 SYNOPSIS 🎀

bool cpumask_full (const struct cpumask *srcp );

💖 ARGUMENTS 💖

  • srcp — the cpumask to that all cpus < nr_cpu_ids are set. 👀 (yes, that's the manpage's wording and we're keeping it, it's giving "trust me bro it's the cpumask" energy)

⭐ RETURN ⭐

  • true if srcp is full (has all bits set), else false 💀

like... that's it. that's the whole function. it ate and left no crumbs. 🔥

🦋 SEE ALSO 🦋

the whole cpumask friend group showed up, and they're all linked from the kernel file ./include/linux/cpumask.h 🌈 — like, the entire group chat fr fr:

ok that's literally everyone, no cap. go say hi. 🫶

and that's the whole page bestie — this one came straight out of the kernel sources at ./include/linux, part of the Kernel API Manual, dated October 2026, and it's filed under cpumask_full(9). slay. 💜✨

📦 where this page comes from