cpuidle_register(9)

🌸 NAME 🌸

Okay so, straight from the Kernel API Manual: cpuidle_register — registers the driver and the cpu devices with the coupled_cpus passed as parameter. This function is used for all common initialization pattern there are in the arch specific drivers. And yes, the devices is globally defined in this file. 💅

✨ SYNOPSIS ✨

int cpuidle_register (struct cpuidle_driver *drv , const struct cpumask
       *const coupled_cpus );

🎀 ARGUMENTS 🎀

• drv — a valid pointer to a struct cpuidle_driver. Like, actually valid, bestie 🫶
• coupled_cpus — a cpumask for the coupled states.

💫 DESCRIPTION 💫

The return vibe check is simple: 0 on success, < 0 otherwise. No cap. 🌈

🔥 SEE ALSO 🔥

Kernel file: ./drivers/cpuidle/cpuidle.c 👑

• 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_unregister(9)
• cpuidle_init(9)

That’s the whole page, bestie 🫶 — source/version ./drivers/cpuidle, dated October 2026, filing under cpuidle_register(9). Periodt 💅✨