cpuidle_register_driver(9)

📦 version 7.3.1, in nixpkgs unstable

💖 cpuidle_register_driver(9) 💖

okay so bestie, welcome to another page of the Kernel API Manual — this one's a little kernel function called cpuidle_register_driver, and honestly? it's giving "small but mighty" ✨

🌸 NAME 🌸

cpuidle_register_driver — registers a driver 🎀

✨ SYNOPSIS ✨

int cpuidle_register_driver (struct cpuidle_driver *drv );

like, that's the whole signature. short king 👑

🦋 ARGUMENTS 🦋

  • drv — a pointer to a valid struct cpuidle_driver 💅 bestie it must be valid, okay? don't be out here passing nonsense.

💜 DESCRIPTION 💜

So what does it do? It registers the driver under a lock 🔒 — and the reason is lowkey iconic: that lock exists to prevent concurrent attempts to [un]register the driver from happening at the same time. no chaotic group-chat crossover energy here, one at a time please 🫶

It returns 0 on success 🌈 — and if things don't slay, it returns a negative error code (the one returned by __cpuidle_register_driver) 😭 so yeah, check your return value, fr fr.

👑 SEE ALSO 👑

Kernel file ./drivers/cpuidle/driver.c — plus the whole friend group, in the order the page gives them:

(yes, some of them are listed twice — that's literally what the page says, so I'm not touching it, iykyk 🙈)

anyway that's the whole vibe 💫 this little page lives in ./drivers/cpuidle, and it's dated October 2026 — so like, future girlie energy fr. bye bestie, go register that driver responsibly 🧚💖

📦 where this page comes from