hwspin_unlock_in_atomic(9)

📦 version 7.3.1, in nixpkgs unstable

💅 hwspin_unlock_in_atomic — like, the Kernel API Manual page, bestie ✨

Okay so we're in the Kernel API Manual today and the icon we're stanning is hwspin_unlock_in_atomic(9). Yes queen, a real function. Let's get into it 🎀

✨ NAME ✨

hwspin_unlock_in_atomic — unlock hwspinlock 🔓

Like, that's literally the whole vibe. It unlocks a hwspinlock. No cap.

🌸 SYNOPSIS 🌸

void hwspin_unlock_in_atomic (struct hwspinlock *hwlock );

So it returns void (nothing back, she gives and gives 😌) and takes exactly one thing: a pointer to a struct hwspinlock called hwlock. That's it. That's the whole signature. Slay.

🦋 ARGUMENTS 🦋

  • hwlock — a previously-acquired hwspinlock which we want to unlock 💖 ngl this is the lock you already grabbed earlier and now you're like "ok bestie, you can go now."

👑 DESCRIPTION 👑

This function will unlock a specific hwspinlock. Simple as that, periodt. One lock in, one lock freed, no drama.

⚠️ But listen — hwlock must be already locked (e.g. by hwspin_trylock) before calling this function. It is a bug to call unlock on a hwlock that is already unlocked. Like, genuinely undefined-behavior-coded. Do not do this. I'm serious. 😭💀

🔥 SEE ALSO 🔥

Kernel file ./include/linux/hwspinlock.h — go read her, she's iconic 🫶

The whole friend group fr fr 💜

okay that's the page!! 🌈 This lil gem lives in ./include/linux and the version/date stamp on it is October 2026 — so yeah, she's from the future, main character energy only 👑✨💅 mwah, go unlock responsibly bestie 🎀🦋💖

📦 where this page comes from