__rt_mutex_init(9)

📦 version 7.3.1, in nixpkgs unstable

💅 __rt_mutex_init(9) — like, the Kernel API Manual, bestie 🎀

okay so welcome to the glow-up era of the rt_mutex — this is the Kernel API Manual page for __rt_mutex_init, and we're gonna get you so comfy with it ✨

🌸 NAME 🌸

__rt_mutex_init — initialize the rt_mutex, that's the whole job, no cap 💖

✨ SYNOPSIS ✨

void __rt_mutex_init (struct rt_mutex *lock , const char *name , struct
       lock_class_key *key );

like yes bestie that's the whole signature, she's giving function-that-returns-void energy (because she literally does 🫶)

🧚 ARGUMENTS 🧚

  • lock — the rt_mutex that's getting initialized, she's the main character here 👑
  • name — the lock name, and it's used for debugging only, so it's the little name tag at the party 🏷️
  • key — the lock class key, also used for debugging 🔍 like it's the vip pass for the debugger, iykyk

💅 DESCRIPTION 💅

so what she does is: initialize the rt_mutex to the unlocked state. slay, clean, simple, iconic 🌈

🚨 but listen — initializing a locked rt_mutex is not allowed. fr fr, do not do it. that's the one vibe killer on this page and we are not doing it 😭

🔥 SEE ALSO 🔥

Kernel file ./kernel/locking/rtmutex_api.c — go read her, she's the source of truth 💜

and the whole friend group:

alright that's the page!! 🦋 big sign-off energy: this one lives in ./kernel/locking, dated October 2026, and honestly? she ate 💅✨ 🍓

📦 where this page comes from