smpboot_thread_fn(9)

🌸 NAME 🌸

okay so bestie, welcome to the smpboot_thread_fn(9) page from the Kernel API Manual 💖. This one is literally the percpu hotplug thread loop function — yes, that exact phrase, no cap.

✨ SYNOPSIS ✨

int smpboot_thread_fn (void *data );

🎀 ARGUMENTS 🎀

• data — the thread data pointer. That’s the whole vibe for this argument 🫶.

🦋 DESCRIPTION 🦋

Okay so here’s the tea: it checks for thread stop and park conditions. Then it calls the necessary setup, cleanup, park and unpark functions for the registered thread. Iconic behavior, honestly.

It returns 1 when the thread should exit, and 0 otherwise. Periodt 💅.

🌈 SEE ALSO 🌈

• Kernel file ./kernel/smpboot.c
• idle_init(9)
• idle_threads_init(9)
• smpboot_register_percpu_thread(9)
• smpboot_unregister_percpu_thread(9)

These are the besties to check next, iykyk 👑✨

xoxo, your ./kernel source/version, dated October 2026 💖💅