cpuidle_find_deepest_state(9)

💅 cpuidle_find_deepest_state — like, the Kernel API Manual's most unbothered little helper

okay so bestie, welcome to the cpuidle_find_deepest_state(9) page from the Kernel API Manual ✨ this one's short and sweet and honestly kind of iconic for it.

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🌸 NAME 🌸

cpuidle_find_deepest_state — find the deepest available idle state. that's it. that's the whole vibe. 🫶

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🦋 SYNOPSIS 🦋

int cpuidle_find_deepest_state (struct cpuidle_driver *drv , struct cpuidle_device *dev , u64 latency_limit_ns );

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🎀 ARGUMENTS 🎀

• drv — the cpuidle driver for the given CPU. like, the main character of this particular core 💅
• dev — the cpuidle device for that same CPU. yes bestie, they're a matched set, slay ✨
• latency_limit_ns — the idle state exit latency limit. this is the budget, the ceiling, the no further than this line 🔥

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👑 RETURN 👑

it hands you back the index of the deepest available idle state. that's the whole bag. 🍓

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🌈 SEE ALSO 🌈

the kernel file lives at ./drivers/cpuidle/cpuidle.c — go say hi 💖 and here's the whole friend group, no cap, all of them:

• cpuidle_play_dead(9)
• cpuidle_use_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_unregister(9)
• cpuidle_register(9)
• cpuidle_init(9)

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bestie note: that __cpuidle_register_device(9) has two underscores up front, so, yeah, it's giving main character energy with a secret identity 🙈 don't typo it, iykyk.

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💜 ok that's the whole page!! this one shipped from ./drivers/cpuidle back in October 2026, so yeah, mwah, periodt. go find the deepest state and slay 💅✨🎀