cpumask_any_and(9)

📦 version 7.3.1, in nixpkgs unstable

💅 cpumask_any_and (kernel API manual, bestie edition)

okay so picture this: you're deep in the kernel, you've got two cpumasks, and you need literally any cpu that's in both of them. not the first one, not the last one, not a specific one — just. any. and that's exactly what this icon does ✨ it's giving intersection energy, fr fr.

🌸 NAME 🌸

cpumask_any_and — pick an arbitrary cpu from *mask1 & *mask2 🎯

like yes bestie, it's the "any" girlie of the cpumask family, but she's doing it and-style. no cap.

🎀 SYNOPSIS 🎀

cpumask_any_and (mask1 , mask2 );

(and yes the spacing is exactly like that, don't come for me, that's just how the page is printed 🙈)

🦋 ARGUMENTS 🦋

  • mask1 — the first input cpumask. one half of the situationship 💔
  • mask2 — the second input cpumask. the other half 🫶

the two of them get ANDed together, and we pick an arbitrary cpu out of that intersection. slay.

🔥 RETURN 🔥

>= nr_cpu_ids if no cpus set.

⚠️ okay so this is the part where you pay attention bestie: if the intersection is empty, you don't get a valid cpu — you get something >= nr_cpu_ids. that's the "no cpus set" signal. literally do not treat it as a cpu id. check it. periodt. 💀

👑 SEE ALSO 👑

so this is the part where the page just. lists everyone. and I mean everyone. it's giving group chat with 61 members and honestly? iconic. all of them live in the kernel file ./include/linux/cpumask.h 💖

iykyk 💅 go read some of them, they're all lowkey great.

that's the whole page bestie, no notes. this one came straight out of the ./include/linux directory, October 2026 edition — so like, reasonably fresh 🌈 catch you in the next manpage, mwah 💜🎀

📦 where this page comes from