manage_workers(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 manage_workers(9) — a whole manual page, bestie 💅

okay so this is manage_workers(9), the kernel API manual page, and I'm literally gonna walk you through it like we're on FaceTime at 2am 🫶

✨ NAME ✨

manage_workers — manage the worker pool. that's it, that's the whole vibe 🎀

🌈 SYNOPSIS 🌈

bool manage_workers (struct worker *worker );

🦋 ARGUMENTS 🦋

  • worker — self. like, the worker in question, the one who's the main character of this call 💅

👑 DESCRIPTION 👑

so here's the deal, bestie: this function lets the caller assume the manager role and manage the worker pool that worker belongs to. very girlboss of it, honestly.

here's the important bit — at any given time, there can be only zero or one manager per pool. not two. not three. zero or one. the exclusion is handled automatically by this function, so you don't have to do anything, it just sorts itself out ✨

and now the part you actually need for your code to slay:

  • the caller can safely start processing works on a false return 🔥
  • on a true return, it's guaranteed that need_to_create_worker is false and may_start_working is true 👑
lowkey that's the whole contract. don't sleep on it. fr fr.

💀 CONTEXT 💀

okay this is the part where you go "wait, what am I holding?" 😭

  • raw_spin_lock_irq(pool->lock) — which may be released and regrabbed multiple times. not me releasing and regrabbing the lock, literally could not be — except it literally can and does. so don't assume the state stays put 🙈
  • it does GFP_KERNEL allocations. so yeah. context rules apply, bestie, no cap.

⭐ RETURN ⭐

  • false — the pool doesn't need management, and the caller can safely start processing works. you're free, go off 💖
  • true — the management function was performed, and the conditions the caller verified before calling the function may no longer be true. so like... re-check your stuff, bestie. the vibe check already happened and the vibes moved 🫠

🍓 SEE ALSO 🍓

this section is long, and yes I'm listing every single one because I am not about to gatekeep the workqueue lore 🧚

Kernel file ./kernel/workqueue.c, plus all of these iconic legends:

like I said. long. but we don't skip, we don't summarise, we list all of them, periodt 💜

and that's the page, bestie 🎀 this one came from ./kernel, dated October 2026 — so whenever you're reading this, just know the source version and date are living right down there at the bottom of the original, and now they're living here in this cute little sign-off instead. mwah 💖

📦 where this page comes from