cpufreq_update_pressure(9)

💅 cpufreq_update_pressure 💅

okay so this one lives in the Kernel API Manual (yes, the (9) section, we're being fancy today 👑) and it's genuinely one of the shorter little guys — but don't let the size fool you, bestie, it's doing real work in there.

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✨ NAME ✨

cpufreq_update_pressure — update cpufreq pressure for CPUs 🌀

like, the whole personality of this function is literally "refresh the pressure numbers, for the CPUs". that's it. that's the vibe.

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✨ SYNOPSIS ✨

void cpufreq_update_pressure(struct cpufreq_policy *policy);

returns void, so no exit-status drama, no "did it work" energy — it just does the thing and dips 🫶

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✨ ARGUMENTS ✨

• policy — the cpufreq policy of the CPUs. this is your one (1) input, bestie, so hold it close 💖

one argument. one job. minimalism ate, honestly.

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✨ DESCRIPTION ✨

so what it actually does: it updates the value of cpufreq pressure for all cpus in the policy 🌸

"all cpus in the policy" — not just one, not a random subset, all of them. policy is giving main character energy and the CPUs are its entourage, and they all get refreshed together. no cap.

that's the whole description. it's a short king and we respect it ✨

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✨ SEE ALSO ✨

it's a whole friend group in here — the kernel file ./drivers/cpufreq/cpufreq.c is basically the group chat, and these are everyone in it 💜

• 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)
• cpufreq_resume(9)
• 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_set_policy(9)
• cpufreq_update_policy(9)
• cpufreq_update_limits(9)
• cpufreq_register_driver(9)

like, 29 cross-references for a two-line description? that's dedication fr fr 🔥

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💀 reminder that this page ships from ./drivers/cpufreq — that's the source, babes — and it's dated October 2026, which is lowkey iconic of it.

and that's the whole page, bestie — short, sweet, and pressure-updated. go touch some CPUs 💖✨🎀