STRUCT DEVFREQ_EVENT_DESC(9)

💅 struct devfreq_event_desc(9) — like, the whole kernel API manual vibe, bestie

okay so this is a page from the Kernel API Manual about struct devfreq_event_desc, and honestly? it's giving "small struct, big job" energy. let's get into it ✨

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🎀 NAME 🎀

struct devfreq_event_desc — the descriptor of devfreq-event device. that's it, that's the tweet 🫶

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✨ SYNOPSIS ✨

struct devfreq_event_desc {
    const char *name;
    u32 event_type;
    void *driver_data;
    const struct devfreq_event_ops *ops;
 };

look at her. four fields. absolutely iconic. no cap 💅

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🌸 Members 🌸

• name — the name of devfreq-event device. literally just what it's called, bestie 🏷️
• event_type — the type of the event, determined and used by the driver. the driver picks it, the driver owns it, main character energy fr 💫
• driver_data — the private data for the devfreq-event driver. it's their business, not ours 🙈
• ops — the operation to control devfreq-event device. the how-to-actually-do-stuff field 🎮

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🦋 Description 🦋

okay so picture this: each devfreq-event device is described with this structure (yes, the manpage says "a this structure," we're keeping the drama and moving on 😭). this structure contains the various data for the devfreq-event device.

the event_type describes what is going to be counted in the register — and it might choose to count, like, read requests, write data in bytes, etc. lots of options, all valid 👑

the full supported list of types lives in a specific header in:

include/dt-bindings/pmu/

iykyk — that's where the type menu lives 🍓

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🔥 SEE ALSO 🔥

• Kernel file ./include/linux/devfreq-event.h — genuinely the bestie of this page
• struct devfreq_event_dev(9)
• struct devfreq_event_data(9)
• struct devfreq_event_ops(9)

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💖 lowkey a little reminder that event_type is doing the heavy lifting here — it's literally deciding what gets counted in the register. respect her.

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and that's the whole page, bestie — no notes, we ate and left no crumbs 🌈⭐

sign-off time: this icon lives over in ./include/linux (Kernel API Manual), dated October 2026 — stream struct devfreq_event_desc(9) 💜👑🎀