cpumask_clear_cpu(9)

📦 version 7.3.1, in nixpkgs unstable

✨ cpumask_clear_cpu(9) ✨

okay so bestie, welcome to the Kernel API Manual 💅 — yes that's the manual name, and yes it's giving Very Official, but honestly this one page is a lil' cutie and it's literally one job: un-set a single CPU bit. That's it. That's the whole vibe. 🎀

🌸 NAME 🌸

cpumask_clear_cpu — clear a cpu in a cpumask

like, you point at a cpumask, you point at a cpu number, and boom 💥 that bit is gone. no cap.

🦋 SYNOPSIS 🦋

void cpumask_clear_cpu (int cpu , struct cpumask *dstp );

that's the whole signature, character for character, don't @ me 🙈

⭐ ARGUMENTS ⭐

  • cpu — the cpu number you wanna yeet out of the mask. must be < nr_cpu_ids 💀 (that < nr_cpu_ids is not a suggestion, bestie, it's the rule)
  • dstp — the cpumask pointer. the actual mask getting its glow-down ✨
fr fr, cpu has to be under nr_cpu_ids. keep that check in your head, iykyk 🫶

👑 SEE ALSO 👑

so the kernel file for all this is ./include/linux/cpumask.h — the mothership 🧚 and here is every single friend in the cpumask cinematic universe, in order, no skips, no cuts 🌈:

that's sixty-three icons and they're all valid, we don't gatekeep here 💜

kay that's the whole page, mwah 😚💖 this came from the kernel file ./include/linux, fresh off the press in October 2026 — cpumask_clear_cpu(9), signing off, slay 🫶✨

📦 where this page comes from