pm_runtime_mark_last_busy(9)

📦 version 7.3.1, in nixpkgs unstable

💅 pm_runtime_mark_last_busy(9) — Kernel API Manual

okay so bestie, welcome to the <pink>Kernel API Manual</pink> ✨ this one's a lil one-pager and honestly? it's giving tiny but mighty 🎀

✨ NAME ✨

pm_runtime_mark_last_busy — literally just updates the last access time of a device 💖

🦋 SYNOPSIS 🦋

void pm_runtime_mark_last_busy (struct device *dev );

that's it. that's the whole vibe check. no return value, no drama 👑

🌸 ARGUMENTS 🌸

  • dev — the target device 🎯 like, the one you're stamping with a fresh timestamp. that's her. she's the main character here.

💜 DESCRIPTION 💜

so what this does, no cap: it updates the last access time of dev — the one that the runtime PM autosuspend mechanism is obsessively keeping track of — and sets it to the current time, as returned by ktime_get_mono_fast_ns ⏰✨

that's the whole thing, fr fr. one call, one timestamp refresh, and the autosuspend machinery knows you were just here 🫶

ngl it's the "read receipt" of the kernel power-management world 💀 you touched the device, so you tell the world you touched it, and autosuspend can chill a lil longer before doing its thing 🌈

🧚 SEE ALSO 🧚

kernel file ./include/linux/pm_runtime.h — and the whole friend group 👯‍♀️:

like I said. big friend group. go read them all, iykyk 💅

and that's the whole page babes 🍓 this lil beauty lives in ./include/linux, dropped October 2026, and yes — she's pm_runtime_mark_last_busy(9) and she ATE 🔥👑 see u in the next manpage mwah 💖

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