atomic_long..._xor_acquire(9)

📦 version 7.3.1, in nixpkgs unstable

💖 NAME 💖

Okay so bestie, welcome to the Kernel API Manual page for atomic_long_fetch_xor_acquire — the header line spells it atomic_long..._xor_acquire(9), ellipsis and all, and honestly? Iconic. This one is atomic bitwise XOR with acquire ordering. That's the whole vibe: XOR, but atomic, and with acquire ordering. Periodt. 🦋

✨ SYNOPSIS ✨

long atomic_long_fetch_xor_acquire (long i , atomic_long_t *v );

🌸 ARGUMENTS 🌸

  • i — a long value. This is your XOR buddy.
  • v — pointer to atomic_long_t. This is the atomic long getting the glow-up.

🎀 DESCRIPTION 🎀

Atomically updates v to (v ^ i) with acquire ordering. Like, it does the XOR and the acquire-ordering thing together, no cap. 💅

⚠️ Unsafe to use in noinstr code; use raw_atomic_long_fetch_xor_acquire there. This is the “do not pass go” note, fr fr.

🫶 RETURN 🫶

The original value of v. So you get the before pic while v gets the after pic. 😭

🌈 SEE ALSO 🌈

Kernel file ./include/linux/atomic/atomic-instrumented.h — and here’s the whole group chat, every single one, don’t skip anybody:

🎀 cute lil sign-off: source/version ./include/linux/atomic, date October 2026, page atomic_long..._xor_acquire(9). Go be atomic with your bad self, bestie. 💖✨
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