dpm_suspend_noirq(9)

📦 version 7.3.1, in nixpkgs unstable

🌙 dpm_suspend_noirq(9) — Kernel API Manual, bestie edition

okay so you're reading the dpm_suspend_noirq(9) page and honestly? it's a short one, but it's doing something kind of iconic in the power-management pipeline. let's get into it 💅

✨ NAME ✨

dpm_suspend_noirq — Execute "noirq suspend" callbacks for all devices.

like, all of them. the whole squad. 🫶

🌸 SYNOPSIS 🌸

int dpm_suspend_noirq (pm_message_t state );

🎀 ARGUMENTS 🎀

  • state — the PM transition of the system being carried out. like, which flavour of sleep we're doing rn. that's the vibe check for the whole operation ✨

🦋 DESCRIPTION 🦋

bestie. listen. what this does is two things, and they're both lowkey the whole point:

  • it prevents device drivers' interrupt handlers from being called (yes, blocks them, no interruptions allowed, we're in our quiet era 🙈)
  • and it invokes the "noirq" suspend callbacks for all non-sysdev devices.

so basically: hush the interrupt handlers, then run the noirq suspend callbacks across every non-sysdev device. periodt. 🌈

ngl the double quotes around "noirq" in the original are doing main character energy — they're telling you it's a named callback category, not just a descriptive word. keep them exactly like that 💖

👑 SEE ALSO 👑

the kernel file ./drivers/base/power/main.c is where the magic lives, and the whole friend group shows up here — go read these too, iykyk:

and that's the whole page, babe 💜 source/version squad represent: this lives under ./drivers/base/power, it's dated October 2026, and the page itself is dpm_suspend_noirq(9) — go off, kernel docs, you ate 🍓✨

📦 where this page comes from