atomic_long_xor(9)

📦 version 7.3.1, in nixpkgs unstable

✨ atomic_long_xor ✨

okay so bestie, welcome to the Kernel API Manual page for atomic_long_xor(9) — the tiny function that flips bits on a long atomically and keeps the ordering relaxed 😌. Let's get into it, no cap.

🎀 NAME 🎀

atomic_long_xor — atomic bitwise XOR with relaxed ordering

🦋 SYNOPSIS 🦋

void atomic_long_xor (long i , atomic_long_t *v );

🌸 ARGUMENTS 🌸

  • i — a long value. Like, just a long. That's the whole description, bestie 🫶.
  • v — pointer to atomic_long_t. It's a pointer to the atomic thing you're about to XOR, iykyk.

💜 DESCRIPTION 💜

Atomically updates v to (v ^ i) with relaxed ordering. That's it, that's the vibe — the whole update lands atomically, and the ordering is relaxed 🔥.

⚠️ Warning, and this one matters: it is unsafe to use in noinstr code — use raw_atomic_long_xor there instead. Not me being dramatic, that's literally what the docs say 💀.

⭐ RETURN ⭐

Nothing. Not zero, not a bool, not a little gift — the signature is void, so genuinely nothing comes back 💅.

👑 SEE ALSO 👑

Kernel file: ./include/linux/atomic/atomic-instrumented.h 🦋

Here's the whole squad, in order, and yes I'm listing every single one because we don't do half-finished here 🌈:

the atomic_ crew 💖

the atomic64_ crew 💜

the atomic_long_ crew (our main characters, fr fr) 👑

and that's the page, bestie 🫶 — sourced from ./include/linux/atomic, dated October 2026, filed under atomic_long_xor(9). slay, go flip some bits 💅✨

📦 where this page comes from