idle_init(9)

✨ idle_init(9) ✨

okay so this is a page from the Kernel API Manual and honestly? it's a short one but she's iconic 💅 it's all about idle_init and we're gonna get you comfy with her.

---

🎀 NAME 🎀

idle_init — bestie, this is the one that initializes the idle thread for a cpu 🦋

---

🌸 SYNOPSIS 🌸

void idle_init (unsigned int cpu );

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

---

💖 ARGUMENTS 💖

• cpu — the cpu for which the idle thread should be initialized 💫 literally just tell her which cpu you're talking about and she'll handle it.

---

🧚 DESCRIPTION 🧚

okay so here's the tea: idle_init creates the thread if it does not exist. 🫶

that's the whole thing, no cap. if the thread's already there? she's not gonna do anything extra. if it's not there yet? she makes it. main character energy fr fr 👑

---

🔥 SEE ALSO 🔥

• Kernel file ./kernel/smpboot.c 👀 (yes bestie, that's where the magic lives)
• idle_threads_init(9)
• smpboot_thread_fn(9)
• smpboot_register_percpu_thread(9)
• smpboot_unregister_percpu_thread(9)

like, go read those too, they're all part of the same little smpboot family 🌈

---

💀 quick reminder: this page comes from ./kernel and she's dated October 2026 — so she's fresh, she's current, she's giving very much up to date ⭐

okay that's the whole page bestie, mwah, go initialize some idle threads 💜🎀🌟