cpuidle_unregister(9)

💅 cpuidle_unregister(9) — the Kernel API Manual, section 9, bestie ✨

okay so real talk, this is a page from the Kernel API Manual (section 9) and it's about the *un*registering side of CPU idle drivers. Yes, the emo sibling of cpuidle_register. Let's get into it 🫶

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🌸 NAME 🌸

cpuidle_unregister — unregister a driver and the devices.

Lowkey important caveat so listen up 👑: this function can be used only if the driver has been previously registered through the cpuidle_register function. No registration, no unregistration. It's giving "you can't break up if you never dated" 😭

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✨ SYNOPSIS ✨

void cpuidle_unregister (struct cpuidle_driver *drv );

void return, one pointer in, that's the whole vibe. Clean. Minimal. Iconic.

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🎀 ARGUMENTS 🎀

• drv — a valid pointer to a struct cpuidle_driver. Like, valid valid, bestie. This is the driver you're sending off into the sunset 🦋

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💜 SEE ALSO 💜

Kernel file ./drivers/cpuidle/cpuidle.c — and omg the friend group is huge, genuinely main character energy from this whole subsystem:

• cpuidle_play_dead(9)
• cpuidle_use_deepest_state(9)
• cpuidle_find_deepest_state(9)
• cpuidle_enter_s2idle(9)
• cpuidle_enter_state(9)
• cpuidle_select(9)
• cpuidle_enter(9)
• cpuidle_reflect(9)
• cpuidle_poll_time(9)
• cpuidle_install_idle_handler(9)
• cpuidle_uninstall_idle_handler(9)
• cpuidle_pause_and_lock(9)
• cpuidle_resume_and_unlock(9)
• cpuidle_enable_device(9)
• cpuidle_disable_device(9)
• __cpuidle_register_device(9)
• cpuidle_register_device(9)
• cpuidle_unregister_device(9)
• cpuidle_register(9)
• cpuidle_init(9)

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ngl if you got here without calling cpuidle_register first, that's a vibe check you're gonna fail 🙈 so double-check before you unregister anything, k?

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and that's the whole page, bestie, no notes 💅 this gem lives in ./drivers/cpuidle and it's dated October 2026 — save the date, screenshot it, put it in the group chat 🎀✨🦋🍓