bpf_cpumask_intersects(9)

📦 version 7.3.1, in nixpkgs unstable

💅 bpf_cpumask_intersects — the Kernel API Manual of "do these two cpumasks share a bit, bestie?" 🎀

ok so picture this: you're in bpf_cpumask_intersects(9), the section 9 of the Kernel API Manual, and you just wanna know if two cpumasks are vibing on the same bit. That's literally it. That's the whole function. Let's get into it ✨

🌸 SYNOPSIS 🌸

__bpf_kfunc bool bpf_cpumask_intersects (const struct cpumask *src1 ,
       const struct cpumask *src2 );

that's the whole signature, no cap. two const struct cpumask * pointers walk in, a bool walks out 🫶

🦋 ARGUMENTS 🦋

  • src1 — the first input, bestie. your opening act. the main character of the pair 💅
  • src2 — the second input. the plus-one. the other half of the duo 🎀

⭐ RETURN ⭐

  • true — src1 and src2 have at least one of the same bits set. they overlap. they're matching. it's giving soulmate energy 🔥
  • false — src1 and src2 don't have any of the same bits set. zero overlap. not a single shared bit. it's giving two strangers at the same party 🙈

💖 DESCRIPTION 💖

so here's the tea: struct bpf_cpumask pointers may be safely passed to src1 and src2. that's it, that's the note. safe to pass 🫶 no sketchy casts, no "are you sure", you're good.

👑 SEE ALSO 👑

the lore, the family tree, the whole group chat:

ok that's the whole page, go check your bits and slay 💅✨

this cutie dropped from ./kernel/bpf in October 2026, and yeah, the header said bpf_cpumask_intersects(9) at the top and the footer said the same down here — iconic bookends, honestly 🎀

📦 where this page comes from