devfreq_reg...opp_notifier(9)

📦 version 7.3.1, in nixpkgs unstable

💅 devfreq_register_opp_notifier(9) — from the Kernel API Manual, bestie 🫶

okay so picture this: you're deep in drivers/devfreq land, and you need the devfreq subsystem to know the moment the OPP availability changes. that's it. that's the whole vibe of this page. this is a helper function, it's giving "little glue function with main character energy", and we're gonna walk through it together 💖

✨ NAME ✨

devfreq_register_opp_notifier — the helper function that gets devfreq notified whenever there are any changes in the OPP availability changes 🔔👑

like, it's literally the middleman that says "hey bestie, something shifted in the OPPs, u might wanna know". no cap.

🌸 SYNOPSIS 🌸

int devfreq_register_opp_notifier (struct device *dev , struct devfreq
*devfreq );

she returns an int, she takes two pointers, she's booked and busy 💅

🦋 ARGUMENTS 🦋

  • dev — the devfreq user device, aka the parent of devfreq. this is the device that's out here using devfreq, the parent figure, the one holding the group chat together 🫶
  • devfreq — the devfreq object itself. the actual star of the show, the main character 👑

both of them are required, both of them are pointers, don't come for me about it.

🎀 SEE ALSO 🎀

okay this is the part where the manpage flexes its entire friend group. the whole kernel file lives at ./drivers/devfreq/devfreq.c, and honestly? the roster is iconic. every single one of these is invited to the function party:

and yeah, devfreq_unregister_opp_notifier(9) is right there in the list — she's the one you call when you're done, the breakup arc, the "we need to talk" text 🙈 and the devm_ versions are the same thing but with automatic cleanup energy, iykyk 💀

⭐ and that's the whole page, bestie ⭐

no bugs, no warnings, no exit statuses, no environment variables on this one — she's a short queen and she knows it 💜

a cute little sign-off from the source: this page comes from ./drivers/devfreq, dated October 2026, and it's filed under devfreq_reg...opp_notifier(9). periodt 💅✨
📦 where this page comes from