nfp_cpp_mutex_unlock(9)

💅 nfp_cpp_mutex_unlock(9) — from the Kernel API Manual, bestie

okay so real talk, this one is a tiny little icon in the nfp world and it deserves its flowers. it's a kernel API page, so it lives in the Kernel API Manual, and the star of the show is nfp_cpp_mutex_unlock — the function that lets go of a mutex handle using the MU Atomic Engine. yes, the actual hardware-flavored atomic engine. no cap, that's the whole vibe.

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✨ NAME ✨

nfp_cpp_mutex_unlock — unlock a mutex handle, using the MU Atomic Engine 🫶

like, you took the lock, now be a polite main character and give it back.

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🌸 SYNOPSIS 🌸

int nfp_cpp_mutex_unlock (struct nfp_cpp_mutex *mutex );

(yes we're copying it exactly, character for character, don't come for me 💅)

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🎀 ARGUMENTS 🎀

• mutex — the NFP CPP Mutex handle. that's it, that's the whole argument. she's the handle you're unlocking, and honestly she ate.

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⭐ RETURN ⭐

• 0 on success — slay, the unlock worked 💖
• -errno on failure — something went sideways, and you get the negative errno so you know exactly what kind of sideways 😭

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🦋 SEE ALSO 🦋

the whole friend group, fr fr:

• Kernel file ./drivers/net/ethernet/netronome/nfp/nfpcore/nfp_mutex.c — the source, go read her, she's iconic
• nfp_cpp_mutex_init(9)
• nfp_cpp_mutex_alloc(9)
• nfp_cpp_mutex_free(9)
• nfp_cpp_mutex_lock(9)
• nfp_cpp_mutex_trylock(9)
• nfp_cpp_mutex_reclaim(9)

iykyk — that's init, alloc, free, lock, trylock, and reclaim, the full squad 🌈

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lowkey a reminder that this page is under the Kernel API Manual umbrella, so keep that kernel-brain energy when you're poking at it 🧚

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and that's the page! mwah 💜 — officially signed off from ./drivers/net/ethernet/netrono... (yes, the footer truncates it like that, we don't make the rules), dated October 2026, and the name on the door is still nfp_cpp_mutex_unlock(9). periodt. 🎀✨