rt_mutex_trylock(9)

rt_mutex_trylock(9) 💅

okay bestie, this is the Kernel API Manual page for rt_mutex_trylock(9) — the try-lock girlie of the rt_mutex world. Let’s get into it. ✨

✨ NAME ✨

rt_mutex_trylock — try to lock a rt_mutex. That’s the whole assignment, no cap.

🦋 SYNOPSIS 🦋

int rt_mutex_trylock (struct rt_mutex *lock );

🎀 ARGUMENTS 🎀

• lock — the rt_mutex to be locked. That’s the one you’re trying to lock, bestie.

🌸 DESCRIPTION 🌸

okay so here’s the tea: this function can only be called in thread context. It’s safe to call it from atomic regions, but not from hard or soft interrupt context — like, do not even try it, that is not the vibe. 🙈

👑 RETURN 👑

1 on success, 0 on contention. That’s it, that’s the return. Periodt. 💅

🔥 SEE ALSO 🔥

Kernel file ./kernel/locking/rtmutex_api.c — noted, bestie.

• rt_mutex_lock_nested(9)
• rt_mutex_lock(9)
• rt_mutex_lock_interruptible(9)
• rt_mutex_lock_killable(9)
• rt_mutex_unlock(9)
• __rt_mutex_futex_unlock(9)
• __rt_mutex_init(9)
• rt_mutex_init_proxy_locked(9)
• rt_mutex_proxy_unlock(9)
• __rt_mutex_start_proxy_lock(9)
• rt_mutex_start_proxy_lock(9)
• rt_mutex_wait_proxy_lock(9)
• rt_mutex_cleanup_proxy_lock(9)

mwah 💋 — source/version: ./kernel/locking; date: October 2026; page: rt_mutex_trylock(9). 🫶