atomic64_inc_return_acquire(9)

📦 version 7.3.1, in nixpkgs unstable

💅 atomic64_inc_return_acquire — Kernel API Manual, bestie edition ✨

okay so this is atomic64_inc_return_acquire(9) from the Kernel API Manual, and she is lowkey iconic 🎀

🌸 NAME 🌸

atomic64_inc_return_acquire — atomic increment with acquire ordering ✨ (yes bestie, atomic + acquire, she's doing both 😌)

🦋 SYNOPSIS 🦋

s64 atomic64_inc_return_acquire (atomic64_t *v );

💖 ARGUMENTS 💖

  • v — pointer to atomic64_t. that's it, that's the whole vibe. hand her a pointer and step back 🫶

👑 DESCRIPTION 👑

So like — atomically updates v to (v + 1) with acquire ordering. the "atomically" part means no one can catch her mid-update, no cap 🔥

⚠️ Unsafe to use in noinstr code; use raw_atomic64_inc_return_acquire there instead. fr fr do not skip this, noinstr is not the moment for the instrumented version 💀

⭐ RETURN ⭐

The updated value of v. so you get the number after the bump, not before — main character behaviour honestly 👑

🌈 SEE ALSO 🌈

Kernel file ./include/linux/atomic/atomic-instrumented.h — she lives there 💅

🧚 the atomic_* girlies

🍓 the atomic64_* icons (her own family, obvs)

🦋 the atomic_long_* cousins

okay and that's the whole page bestie, go forth and increment atomically 🫶✨

source file ./include/linux/atomic, dated October 2026, page atomic64_inc_return_acquire(9) — mwah, signing off 💋🎀

📦 where this page comes from