cpufreq_resume(9)

💅 cpufreq_resume — the Kernel API Manual, bestie edition ✨

okay so this is cpufreq_resume(9) from the Kernel API Manual, and before you ask — yes, the manual name is right there in the title, we're not doing that twice 💖

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🌸 NAME 🌸

cpufreq_resume — the one that resumes CPUFreq governors. that's it, that's the whole job, and it ate 🎀

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✨ SYNOPSIS ✨

void cpufreq_resume (void );

like, literally nothing goes in and nothing comes out. iconic behavior honestly 👑

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🦋 ARGUMENTS 🦋

• void — no arguments, bestie. zero. nada. the function is self-sufficient and does not need you to hand it anything 🫶

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💜 DESCRIPTION 💜

okay so picture this: the whole system is doing a suspend/hibernate cycle — the big nap, the full shutdown-adjacent moment — and somewhere in there the governors get suspended via cpufreq_suspend. cpufreq_resume is the call that gets made during that system wide cycle to bring those governors back to life. it's the "wake up babe, we're going back to work" of cpufreq 🌈

it is called during system wide Suspend/Hibernate cycle, for resuming governors that are suspended with cpufreq_suspend. no cap, that's the assignment and it understood it 🔥

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🔥 SEE ALSO 🔥

if you're the kind of person who reads the whole group chat scrollback, this list is for you. it lives in the kernel file ./drivers/cpufreq/cpufreq.c and honestly the friend group is huge:

• cpufreq_cpu_get(9)
• cpufreq_cpu_put(9)
• adjust_jiffies(9)
• cpufreq_notify_transition(9)
• cpufreq_enable_fast_switch(9)
• cpufreq_disable_fast_switch(9)
• cpufreq_driver_resolve_freq(9)
• cpufreq_parse_governor(9)
• cpufreq_add_dev(9)
• cpufreq_out_of_sync(9)
• cpufreq_quick_get(9)
• cpufreq_quick_get_max(9)
• cpufreq_get_hw_max_freq(9)
• cpufreq_get(9)
• cpufreq_suspend(9) — the one that puts them to sleep, the prequel 💀
• cpufreq_driver_test_flags(9)
• cpufreq_get_current_driver(9)
• cpufreq_get_driver_data(9)
• cpufreq_register_notifier(9)
• cpufreq_unregister_notifier(9)
• cpufreq_driver_fast_switch(9)
• cpufreq_driver_adjust_perf(9)
• cpufreq_driver_has_adjust_perf(9)
• cpufreq_update_pressure(9)
• cpufreq_set_policy(9)
• cpufreq_update_policy(9)
• cpufreq_update_limits(9)
• cpufreq_register_driver(9)

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and that's the whole page, bestie — periodt 💅 this came out of ./drivers/cpufreq and it's dated October 2026, so screenshot it now before the vibe shifts 🌸💖