raw_atomic_..._add_acquire(9)

📦 version 7.3.1, in nixpkgs unstable

raw_atomic_..._add_acquire(9) 💅✨

okay bestie, welcome to the Kernel API Manual — this page is about raw_atomic_long_fetch_add_acquire, and yes the header is doing that raw_atomic_..._add_acquire(9) abbreviation thing. it's giving “long function name, tiny header,” but we move. 🫶

💖 NAME 💖

raw_atomic_long_fetch_add_acquire — atomic add with acquire ordering. periodt.

✨ SYNOPSIS ✨

long raw_atomic_long_fetch_add_acquire (long i , atomic_long_t *v );

🎀 ARGUMENTS 🎀

  • i — the long value you're adding. that's it. that's the number.
  • v — pointer to the atomic_long_t that's getting updated. handle with care, queen. 👑

🌸 DESCRIPTION 🌸

okay so the whole move: atomically updates v to (v + i) with acquire ordering. that's the core. no cap.

also important, bestie: this one is safe to use in noinstr code. but outside of that? the page says prefer atomic_long_fetch_add_acquire elsewhere. so use this raw one where the noinstr vibe fits, and reach for the other one for regular life. iykyk. 💅

⭐ RETURN ⭐

the original value of v — meaning the value from before the update, not the new sum. iconic. 🫶

🌈 SEE ALSO 🌈

k bye bestie 🫶 — source/version: ./include/linux/atomic, date: October 2026. mwah 💋

📦 where this page comes from