cpuidle_enter_s2idle(9)

✨ NAME ✨

cpuidle_enter_s2idle — enter an idle state suitable for suspend-to-idle. 💤

okay so bestie, this is the cpuidle_enter_s2idle(9) page from the Kernel API Manual, and it's lowkey iconic: it's all about entering an idle state that's suitable for suspend-to-idle. 🫶

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🧚 SYNOPSIS 🧚

Here's the function signature, copied exactly so nobody gets lost:

       int cpuidle_enter_s2idle (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. 🖥️
• dev — the cpuidle device for the given CPU. 🎀
• latency_limit_ns — the idle state exit latency limit. ⏱️

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🌸 DESCRIPTION 🌸

If there are states with the ->enter_s2idle callback, it finds the deepest of them and enters it with frozen tick. ❄️

That's the whole vibe, no cap: deepest callback state, frozen tick, suspend-to-idle main character energy. ✨

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🦋 SEE ALSO 🦋

Kernel file ./drivers/cpuidle/cpuidle.c — plus these cross-reference besties:

• cpuidle_play_dead(9)
• cpuidle_use_deepest_state(9)
• cpuidle_find_deepest_state(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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okay that's the page, bestie 🫶 — footer energy: source/version ./drivers/cpuidle, date October 2026, and the manual name is cpuidle_enter_s2idle(9). slay. 💅✨