cpufreq_state2power(9)

✨ NAME ✨

okay bestie, this is cpufreq_state2power(9) from the Kernel API Manual, and it is literally here to convert a cpu cdev state to power consumed. 🎀

🌸 SYNOPSIS 🌸

       int cpufreq_state2power (struct thermal_cooling_device *cdev , unsigned
       long state , u32 *power );

🦋 ARGUMENTS 🦋

• cdev — thermal_cooling_device pointer.
• state — cooling device state to be converted.
• power — pointer in which to store the resulting power.

💖 DESCRIPTION 💖

So like, this function takes the cooling device state state and converts it into power consumption in milliwatts, assuming 100% load. Then it stores the calculated power in power. Slay, that’s the whole vibe. ✨

🔥 RETURN 🔥

It returns 0 on success. If the cooling device state is bigger than maximum allowed, it returns -EINVAL — yes, bestie, that’s the error, don’t ignore it. 💀

🌈 SEE ALSO 🌈

The kernel file is ./drivers/thermal/cpufreq_cooling.c, and the whole squad is:

• 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_power2state(9)
• cpufreq_get_max_state(9)
• cpufreq_get_cur_state(9)
• cpufreq_set_cur_state(9)
• __cpufreq_cooling_register(9)
• cpufreq_cooling_register(9)
• of_cpufreq_cooling_register(9)
• cpufreq_cooling_unregister(9)

This page’s source is ./drivers/thermal, dated October 2026, and it’s filed under cpufreq_state2power(9) — periodt, bestie 💜