clockevents_exchange_device(9)

📦 version 7.3.1, in nixpkgs unstable

💅 clockevents_exchange_device(9) — like, the Kernel API Manual, but make it make sense

okay so bestie, welcome to the clockevents_exchange_device page 💖 this one's a function from the Kernel API Manual and it is honestly so iconic of it to just say exactly what it means. Let's get into it.

✨ NAME ✨

clockevents_exchange_device — release and request clock devices 🎀

like... it hands one clock device its walking papers and slides a new one into the group chat. that's the whole vibe.

🌸 SYNOPSIS 🌸

void clockevents_exchange_device (struct clock_event_device *old ,
struct clock_event_device *new );

no return value, no drama, just vibes and two pointers 🫶

🦋 ARGUMENTS 🦋

  • old — the device you're releasing, bestie. and yes, it can be NULL — no cap, that's allowed 💀
  • new — the device you're requesting. and would you look at that, this one can be NULL too 🙈

👑 DESCRIPTION 👑

so the tea is: this gets called from various tick functions — and listen — it's called with clockevents_lock held and interrupts disabled 🔥

that's not a cute little detail, that's the whole situation. lock held, interrupts off, that's the context, periodt. 💅

🌈 SEE ALSO 🌈

the kernel file lives at ./kernel/time/clockevents.c and honestly it's giving main character energy — go read it, iykyk 📖✨

and here's the whole friend group, keep every single one of them:

💀 and yes, clockevents_program_min_delta(9) really is listed twice. not me editing the original — that's literally how it came to me, so it stays. fr fr.

🌸 ok that's the page!! ./kernel/time, October 2026, and the star of the show clockevents_exchange_device(9) — slay, ate, no notes 💖✨🎀🦋

📦 where this page comes from