cpufreq_cpu_put(9)

💅 cpufreq_cpu_put(9) — the Kernel API Manual, bestie edition 🎀

okay so real talk, this one is from the Kernel API Manual and it's literally the polite goodbye of the cpufreq world. You grabbed a policy with cpufreq_cpu_get, you did your little thing, and now you gotta give it back. Rude not to. 🙈

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✨ NAME ✨

cpufreq_cpu_put — decrement that kobject usage counter for the cpufreq policy, bestie. It's giving "return what you borrowed" energy and honestly? Iconic. 🫶

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🌸 SYNOPSIS 🌸

void cpufreq_cpu_put (struct cpufreq_policy *policy );

That's it. That's the whole vibe check. No return value, no drama, just vibes and a pointer. 💜

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🦋 ARGUMENTS 🦋

• policy — the cpufreq policy that cpufreq_cpu_get handed you. Like, specifically the one you got from cpufreq_cpu_get. Don't be out here passing random policies, that's not the move. 😭

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👑 SEE ALSO 👑

okay this list is a whole friend group and you're gonna meet all of them. no cap, every single one:

• Kernel file ./drivers/cpufreq/cpufreq.c (the mothership 🏠)
• cpufreq_cpu_get(9) — the one that started it all, the counterpart, the other half of this relationship
• 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_set_policy(9)
• cpufreq_update_policy(9)
• cpufreq_update_limits(9)
• cpufreq_register_driver(9)

Like I said. Entire friend group. All of them are (9) and all of them are slaying in their own way. 💅✨

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ngl if you call cpufreq_cpu_get and then forget to call cpufreq_cpu_put, the counter just sits there. Forever. Haunting you. Main character behaviour but make it a leak. 🫠 So put it back, bestie.

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💖 that's the page!! shoutout to the source tree at ./drivers/cpufreq, dated October 2026 — mwah, love that for us 🎀💖