raw_atomic_...turn_release(9)

📦 version 7.3.1, in nixpkgs unstable

okay so bestie, welcome to the Kernel API Manual — today's main character is raw_atomic_sub_return_release, and it's giving atomic subtract with release ordering. Honestly? iconic. 💖

🎀 NAME 🎀

raw_atomic_sub_return_release — atomic subtract with release ordering. That's the name, that's the vibe, no notes. ✨

✨ SYNOPSIS ✨

here's the signature, bestie — copy it exactly, because we do not freestyle C signatures in this house:

int raw_atomic_sub_return_release (int i , atomic_t *v );

💅 ARGUMENTS 💅

okay so there are exactly two inputs and both matter:

  • i — int value to subtract. the little number doing the subtracting, slay.
  • v — pointer to atomic_t. this is the atomic bestie getting updated. 🫶

🦋 DESCRIPTION 🦋

okay so the actual tea: it atomically updates v to (v - i) with release ordering. that's the whole move. 💅

It's safe to use in noinstr code — but the manual says prefer atomic_sub_return_release elsewhere. so that's the preference, iykyk. 😌

🌸 RETURN 🌸

you get the updated value of v back. that's it. that's the return. periodt. 🫶

🌈 SEE ALSO 🌈

bestie, the SEE ALSO section is literally the whole atomic extended universe. every single ref is here, no cap:

that's the page, bestie! this is the Kernel API Manual entry for raw_atomic_sub_return_release, source/version ./include/linux/atomic, dated October 2026. if you need to, go update v to (v - i) atomically with release ordering and absolutely slay. 💅✨

📦 where this page comes from