__cpuidle_get_cpu_driver(9)

💅 __cpuidle_get_cpu_driver(9) — the Kernel API Manual, bestie edition 🎀

okay so welcome to the <pink>__cpuidle_get_cpu_driver</pink> page, straight out of the Kernel API Manual. it's short, it's sweet, and it's literally just "gimme the driver pointer." let's get into it ✨

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✨ NAME ✨

__cpuidle_get_cpu_driver — return the global cpuidle driver pointer. that's the whole job. no cap 🫶

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🌸 SYNOPSIS 🌸

struct cpuidle_driver * __cpuidle_get_cpu_driver (int cpu );

so you call it with an int cpu, and it hands you back a struct cpuidle_driver *. simple as that, babe 💖

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🦋 ARGUMENTS 🦋

• cpu — lowkey ignored unless you've got the multiple driver support going on. otherwise it's just... there. sitting pretty. doing nothing 🙈

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⭐ DESCRIPTION ⭐

it returns a pointer to a struct cpuidle_driver object. and if no driver was previously registered? you get NULL. that's it, that's the whole vibe check 👑

like, <mint>the way that</mint> this function is just a getter and refuses to elaborate? main character energy fr fr. 💅

heads up bestie: NULL is a real possible return here, so don't go dereferencing it without checking. no thoughts head empty = segfault city 😭

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🌈 SEE ALSO 🌈

kernel file ./drivers/cpuidle/driver.c — go read it, iykyk 📖

then the whole friend group:

• __cpuidle_unset_driver(9)
• __cpuidle_set_driver(9)
• __cpuidle_set_driver(9) — yes it's listed twice, and honestly? iconic of them 💀
• __cpuidle_unset_driver(9) — also twice. we love a consistent queen ✨
• cpuidle_setup_broadcast_timer(9)
• __cpuidle_driver_init(9)
• __cpuidle_register_driver(9)
• __cpuidle_unregister_driver(9)
• cpuidle_register_driver(9)
• cpuidle_unregister_driver(9)
• cpuidle_get_driver(9)
• cpuidle_get_cpu_driver(9)
• cpuidle_driver_state_disabled(9)

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and that's the page, bestie 🍓 this little gem lives in ./drivers/cpuidle, and the manual's dated October 2026 — so go forth, get your driver pointer, and slay 💜🧚‍♀️