cpufreq_set_cur_state(9)

💅 cpufreq_set_cur_state(9) — a Kernel API Manual moment

okay so bestie, welcome to the <pink>Kernel API Manual</pink> entry for cpufreq_set_cur_state ✨ this is a <purple>section 9</purple> situation (kernel API, iykyk) and honestly it's giving "small function, big responsibilities."

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🌸 NAME 🌸

cpufreq_set_cur_state — the callback function that sets the current cooling state 🧊✨

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🦋 SYNOPSIS 🦋

int cpufreq_set_cur_state (struct thermal_cooling_device *cdev ,
unsigned long state );

that's the whole vibe, no cap 💅

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🎀 ARGUMENTS 🎀

• cdev — a pointer to the thermal cooling device 🫶 like, the cooling device in question, bestie
• state — set this variable to the current cooling state 🌡️ that's literally the whole assignment

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👑 DESCRIPTION 👑

so this is the callback for the thermal cooling device to change the cpufreq current cooling state 🔥 it's the little handler that the thermal side calls when it wants the cpufreq cooling situation to move to a different state — iconic behavior, fr fr.

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⭐ RETURN ⭐

0 on success 💖 and an <red>error code otherwise</red> 😭 (so like, check it, bestie, don't just assume success)

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🌈 SEE ALSO 🌈

literally connected to everything, bestie. Kernel file ./drivers/thermal/cpufreq_cooling.c plus:

• struct time_in_idle(9)
• struct cpufreq_cooling_device(9)
• get_level(9)
• get_load(9)
• get_dynamic_power(9)
• cpufreq_get_requested_power(9)
• cpufreq_state2power(9)
• cpufreq_power2state(9)
• cpufreq_get_max_state(9)
• cpufreq_get_cur_state(9)
• __cpufreq_cooling_register(9)
• cpufreq_cooling_register(9)
• of_cpufreq_cooling_register(9)
• cpufreq_cooling_unregister(9)

like I said. everyone knows everyone. it's a whole friend group 💜

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🫶 quick reminder that this page lives at ./drivers/thermal — go read the source if you wanna be extra

and that's the whole page, bestie!! era: <yellow>October 2026</yellow> 🍓 brought to you from the <mint>./drivers/thermal</mint> corner of the kernel, filed under cpufreq_set_cur_state(9) — slay, stay cool (literally), and see you in the next manpage 💅✨🎀