atomic_fetch_xor(9)

📦 version 7.3.1, in nixpkgs unstable

💖 NAME 💖

okay so bestie, this is atomic_fetch_xor(9) from the Kernel API Manual, and it's giving atomic bitwise XOR with full ordering. yes, that's the whole name-and-one-liner, and it ate. 💅

✨ SYNOPSIS ✨

int atomic_fetch_xor (int i , atomic_t *v );

🎀 ARGUMENTS 🎀

  • i — an int value.
  • v — pointer to atomic_t.

🦋 DESCRIPTION 🦋

Atomically updates v to (v ^ i) with full ordering.

🚨 real talk: it's unsafe to use in noinstr code — use raw_atomic_fetch_xor there instead, bestie.

🌈 RETURN 🌈

The original value of v.

👑 SEE ALSO 👑

Kernel file: ./include/linux/atomic/atomic-instrumented.h. the whole atomic squad is here, no cap:

mwah 💋 that's the whole page, bestie — source/version: ./include/linux/atomic, date: October 2026. now go XOR something atomically and text me after. 🫶✨

📦 where this page comes from