completion_done(9)

📦 version 7.3.1, in nixpkgs unstable

💅 completion_done(9) — the kernel API manual, but make it make sense

okay so bestie, welcome to completion_done from the Kernel API Manual — yes that's the manual name, yes it's giving "ancient scrolls," but stay with me because this one is actually so useful 🫶

✨ NAME ✨

completion_done — a lil vibe check to see if a completion has any waiters 👀

🌸 SYNOPSIS 🌸

bool completion_done (struct completion *x );

that's it. that's the whole thing. one arg, one bool back. iconic behavior honestly ✨

🎀 ARGUMENTS 🎀

  • x — the completion structure bestie, that's it, that's the arg 💖

🦋 RETURN 🦋

  • 0 — there ARE waiters (like, wait_for_completion is in progress rn) 😭
  • 1 — there are NO waiters, nobody's waiting, the group chat is quiet 🌙
ok so heads up, the 0-means-waiters thing is lowkey the reverse of what your brain wants. 0 = people waiting. 1 = nobody waiting. not me almost getting this backwards 🙈

🌈 DESCRIPTION 🌈

so here's the tea 🍓: this will always return true if complete_all was called on X.

that's literally the whole note. read it again. complete_all on X? always true. no cap. 💀

👑 SEE ALSO 👑

Kernel file ./kernel/sched/completion.c — go read it, it's right there:

like a whole friend group of completion functions honestly, they all ate 🔥

and that's the page!! brought to you by ./kernel/sched, dated October 2026 — mwah, go touch some completions bestie 💜🧚

📦 where this page comes from