raw_atomic_f..._inc_relaxed(9)

📦 version 7.3.1, in nixpkgs unstable

💅 raw_atomic_fetch_inc_relaxed 💅

okay so this is a page from the Kernel API Manual, and bestie, it's a short one but it's lowkey iconic. grab a boba, this'll take like two minutes.

✨ NAME ✨

raw_atomic_fetch_inc_relaxed — atomic increment with relaxed ordering 🎀

🌸 SYNOPSIS 🌸

int raw_atomic_fetch_inc_relaxed (atomic_t *v );

that's it. that's the whole signature. no cap. 🫶

🦋 ARGUMENTS 🦋

  • v — pointer to atomic_t. yeah. that's the whole thing. it's a pointer to an atomic_t, and it is the main character here. 💅

👑 DESCRIPTION 👑

so like, here's the vibe: this function atomically updates v to (v + 1) with relaxed ordering. one clean little increment, no drama, no ordering guarantees beyond the relaxed kind. ✨

and the part you actually need to know: it's safe to use in noinstr code. literally built different for that context. BUT — and I'm saying this with love — prefer atomic_fetch_inc_relaxed everywhere else. raw_ is the special-occasion fit, not the everyday one. iykyk. 🙈

💖 RETURN 💖

it hands you back the original value of v — like, the value before the increment happened. so you get the pre-glow-up v, and the actual v is already one bigger. fetch-then-bump energy. periodt. ⭐

🎀 SEE ALSO 🎀

first up, the actual source file, go give it a follow:

  • Kernel file ./include/linux/atomic/atomic-arch-fallback.h

🧚 the raw_atomic_* besties

🍓 the raw_atomic64_* besties

yeah that's a LOT of siblings. it's a whole family reunion up in ./include/linux/atomic. drink water. 💀

and that's the page!! mwah 💋 this one came from ./include/linux/atomic, dated October 2026, and the header on the tin is raw_atomic_f..._inc_relaxed(9) — go forth and increment (relaxedly) bestie 🎀✨🦋

📦 where this page comes from