proc_thermal...ntr_callback(9)

💅 proc_thermal_power_floor_intr_callback(9)

okay so this is a page from the Kernel API Manual, and bestie, it's a short one — but it's kind of a big deal if you're into thermal stuff. it's called proc_thermal_power_floor_intr_callback, and yes the header up top is truncated as proc_thermal...ntr_callback(9) because apparently even kernel docs need a little ✨mystery✨. anyway. let's get into it 🫶

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🌸 NAME 🌸

proc_thermal_power_floor_intr_callback — process power floor notification. that's it, that's the whole vibe. it's the function that handles the power floor interrupt notification, and ngl the name is a whole mouthful so maybe just call it "the power floor callback" in your head 💜

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✨ SYNOPSIS ✨

void proc_thermal_power_floor_intr_callback (struct pci_dev *pdev ,
       struct proc_thermal_device *proc_priv );

it returns void, so like... no return value, no drama, no receipts. it just does the thing and leaves 🎀

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🦋 ARGUMENTS 🦋

• pdev — the PCI device instance. like, which device are we even talking about, you know? that's this one, bestie 💅
• proc_priv — the Processor thermal device instance. the actual thermal-device business object, the main character of this whole operation 👑

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🔥 DESCRIPTION 🔥

okay so here's what it does, and honestly it's giving "quietly competent":

it checks if the power floor interrupt is active. and if it is active — this is the important part — it sends a notification to user space for the attribute "power_limits". so then the user can read that attribute and take action. periodt. that's the whole flow 🧚

like, the kernel isn't gonna make decisions for you, it's just gonna be like "hey bestie, go look at power_limits, something's up" and then it's your turn ✨

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🌈 CONTEXT 🌈

called from interrupt thread context. so keep it quick and don't block, iykyk 😭

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⭐ RETURN ⭐

None. literally nothing. void energy. it does its job and dips 💀

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💖 SEE ALSO 💖

• Kernel file: ./drivers/thermal/intel/int340x_thermal/processor_thermal_power_floor.c — go read the source, it's right there 🍓
• proc_thermal_check_power_floor_intr(9) — the sibling function, go say hi 👋

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lowkey a reminder: this is the power floor callback, not the power ceiling one, so don't mix them up bestie 🙈

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and that's the page! 💫 it lives at ./drivers/thermal/intel/int340... (yes, truncated like the header, we love consistency), dated October 2026, and it's proc_thermal...ntr_callback(9) all the way down — slay, go read your kernel source, mwah 🎀💜