devfreq_update_target(9)

💅 devfreq_update_target — kernel API manual, but make it make sense

okay bestie, so this one is a kernel function called devfreq_update_target, and it lives in the Kernel API Manual. No cap, the whole point of it is: reevaluate the device and configure frequency on the final stage. That's the vibe. It's the last-stop, final-stage glow-up moment for your device's frequency. ✨

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🦋 SYNOPSIS

int devfreq_update_target (struct devfreq *devfreq , unsigned long freq );

that's it, that's the whole signature. returns an int, takes two things, we're gonna go through them one by one, i promise. 🫶

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🎀 ARGUMENTS

• devfreq — the devfreq instance. your actual device object, the main character of this whole story 👑
• freq — the new frequency of the parent device. and listen, this one has a very specific lane: this argument is only used for devfreq devices using the passive governor. like, only then. do not come for it otherwise, it's not for you 💀

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🌸 NOTE

bestie. read this twice. Lock devfreq->lock before calling devfreq_update_target. do not skip the lock. the lock is not optional, the lock is the whole personality.

and the other thing: this function should only be used by both update_devfreq and devfreq governors. it's not a general-purpose lil helper you sprinkle on your code like glitter. it's an inside job, iykyk. 🙈

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⭐ SEE ALSO

the whole extended friend group, and yes they all have (9) after their names because that's the section, we don't make the rules:

• Kernel file ./drivers/devfreq/devfreq.c
• find_device_devfreq(9)
• devfreq_get_freq_range(9)
• devfreq_get_freq_level(9)
• devfreq_update_status(9)
• find_devfreq_governor(9)
• try_then_request_governor(9)
• update_devfreq(9)
• devfreq_monitor(9)
• devfreq_monitor_start(9)
• devfreq_monitor_stop(9)
• devfreq_monitor_suspend(9)
• devfreq_monitor_resume(9)
• devfreq_update_interval(9)
• devfreq_notifier_call(9)
• qos_notifier_call(9)
• qos_min_notifier_call(9)
• qos_max_notifier_call(9)
• devfreq_dev_release(9)
• devfreq_add_device(9)
• devfreq_remove_device(9)
• devm_devfreq_add_device(9)
• devm_devfreq_remove_device(9)
• devfreq_suspend_device(9)
• devfreq_resume_device(9)
• devfreq_suspend(9)
• devfreq_resume(9)
• devfreq_add_governor(9)
• devm_devfreq_add_governor(9)
• devfreq_remove_governor(9)
• devfreq_summary_show(9)
• devfreq_recommended_opp(9)
• devfreq_register_opp_notifier(9)
• devfreq_unregister_opp_notifier(9)
• devm_devfreq_register_opp_notifier(9)
• devm_devfreq_unregister_opp_notifier(9)
• devfreq_register_notifier(9)
• devm_devfreq_register_notifier(9)
• devm_devfreq_unregister_notifier(9)

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and that's the page!! mwah 💋 this whole thing ships out of ./drivers/devfreq and it's dated October 2026, so like, future-coded of it honestly. slay. 🌈🎀