hwspin_trylock_in_atomic(9)

✨ hwspin_trylock_in_atomic ✨

okay so bestie, this one is from the Kernel API Manual, and it’s literally about trying to grab a specific hwspinlock without waiting around. no cap, the vibe is “attempt it right now or move on.” 💅

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🌸 NAME 🌸

hwspin_trylock_in_atomic — attempt to lock a specific hwspinlock 🎀

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🦋 SYNOPSIS 🦋

int hwspin_trylock_in_atomic (struct hwspinlock *hwlock );

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💖 ARGUMENTS 💖

• hwlock — an hwspinlock which we want to trylock. that’s the lock bestie, the one we’re trying to snatch. 🫶

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🔥 DESCRIPTION 🔥

This function attempts to lock an hwspinlock, and will immediately fail if the hwspinlock is already taken. like, no waiting, no queuing, no “maybe in a sec” — it checks and either slays or says nope. 💀

⚠️ This function shall be called only from an atomic context. that part is not optional, bestie. atomic context only. periodt.

Returns 0 if we successfully locked the hwspinlock, -EBUSY if the hwspinlock was already taken, and -EINVAL if hwlock is invalid. those are the three outcomes, and they’re giving very clear main-character energy. 👑

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🌈 SEE ALSO 🌈

Kernel file ./include/linux/hwspinlock.h, plus these iconic little friends:

• hwspin_trylock_irqsave(9)
• hwspin_trylock_irq(9)
• hwspin_trylock_raw(9)
• hwspin_trylock(9)
• hwspin_lock_timeout_irqsave(9)
• hwspin_lock_timeout_irq(9)
• hwspin_lock_timeout_raw(9)
• hwspin_lock_timeout_in_atomic(9)
• hwspin_lock_timeout(9)
• hwspin_unlock_irqrestore(9)
• hwspin_unlock_irq(9)
• hwspin_unlock_raw(9)
• hwspin_unlock_in_atomic(9)
• hwspin_unlock(9)

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and that’s the whole page, bestie 🧚💜 — source situation is ./include/linux, dated October 2026. go forth and trylock responsibly, fr fr. 🍓✨