atomic_long..._add_acquire(9)

📦 version 7.3.1, in nixpkgs unstable

🦋 atomic_long..._add_acquire(9) 🦋

okay so welcome to the Kernel API Manual page for atomic_long_fetch_add_acquire — yes, the header says atomic_long..._add_acquire(9), and we are folding that manual-name energy right in here, bestie. This one is all about an atomic add that carries acquire ordering, and it is lowkey iconic if you need the original value back. 💅

💖 NAME 💖

atomic_long_fetch_add_acquire — atomic add with acquire ordering ✨

🎀 SYNOPSIS 🎀

long atomic_long_fetch_add_acquire (long i , atomic_long_t *v );

🌸 ARGUMENTS 🌸

  • i — long value to add
  • v — pointer to atomic_long_t

🦋 DESCRIPTION 🦋

okay so the main character move: atomically updates v to (v + i) with acquire ordering. That's the whole bit — clean, atomic, and ordered. No cap. ✨

🚨 bestie, important: unsafe to use in noinstr code; use raw_atomic_long_fetch_add_acquire there instead. Like, do not ignore that one. 💀

👑 RETURN 👑

The original value of v — the before pic, not the glow-up result. 💅

🌈 SEE ALSO 🌈

Kernel file: ./include/linux/atomic/atomic-instrumented.h — and the whole extended atomic family is pulling up, iykyk:

mwah 💋 and that's the whole page, bestie. source/version: ./include/linux/atomic — date: October 2026 — page: atomic_long..._add_acquire(9) — from the Kernel API Manual. 🫶

📦 where this page comes from