cpufreq_set_policy(9)

💖 cpufreq_set_policy(9) — Kernel API Manual 💖

🌸 NAME 🌸

cpufreq_set_policy — modify cpufreq policy parameters. 💅

✨ SYNOPSIS ✨

int cpufreq_set_policy (struct cpufreq_policy *policy , struct
       cpufreq_governor *new_gov , unsigned int new_pol );

🎀 ARGUMENTS 🎀

• policy — policy object to modify. 🫶
• new_gov — policy governor pointer. 🧚
• new_pol — policy value (for drivers with built-in governors). 🍓

💖 DESCRIPTION 💖

okay so bestie, here's the vibe: cpufreq_set_policy invokes the cpufreq driver's ->verify callback to sanity-check the frequency limits to be set for the policy, updates policy with the verified limits values, and then either invokes the driver's ->setpolicy callback (if present) or carries out a governor update for policy. ✨

That means it runs the current governor's ->limits callback (if new_gov points to the same object as the one in policy) or replaces the governor for policy with new_gov. 🦋

important bestie: the cpuinfo part of policy is not updated by this function. no cap. 💀

🦋 SEE ALSO 🦋

Kernel file: ./drivers/cpufreq/cpufreq.c 👑

• 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_update_pressure(9)
• cpufreq_update_policy(9)
• cpufreq_update_limits(9)
• cpufreq_register_driver(9)

okay bye bestie, mwah 💋 — source/version ./drivers/cpufreq, date October 2026, page cpufreq_set_policy(9) from the Kernel API Manual. 🎀💖✨