hwspin_lock_register(9)

💖 hwspin_lock_register(9) 💖

okay so this is a page from the Kernel API Manual, section 9, and it's all about hwspin_lock_register — registering a brand new hw spinlock device. yes bestie, we're in the hardware spinlock trenches and it's giving low-level main character energy 🔥

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✨ NAME ✨

hwspin_lock_register — register a new hw spinlock device 🎀

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✨ SYNOPSIS ✨

int hwspin_lock_register (struct hwspinlock_device *bank , struct device
*dev , const struct hwspinlock_ops *ops , int base_id , int num_locks );

like, that's the whole signature, no cap, copy it exactly 💅

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✨ ARGUMENTS ✨

• bank — the hwspinlock device, which usually provides numerous hw locks. it's basically the whole friend group of locks 🫶
• dev — the backing device. the actual device behind all this ✨
• ops — hwspinlock handlers for this device. the behaviour lives here 👑
• base_id — id of the first hardware spinlock in this bank. like, the starting number of the squad 🌸
• num_locks — number of hwspinlocks provided by this device. count 'em 🔢

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✨ DESCRIPTION ✨

so the way that this works: this function should be called from the underlying platform-specific implementation, to register a new hwspinlock device instance. that's the whole assignment, bestie 💖

⚠️ Should be called from a process context (might sleep). yes, might sleep — so do not be calling this from some atomic context, okay? it literally tells you it can sleep 😭

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✨ RETURN ✨

0 on success, or an appropriate error code on failure. iconic behaviour, honestly — zero means slay, anything else means vibe check failed 💀

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✨ SEE ALSO ✨

• Kernel file ./drivers/hwspinlock/hwspinlock_core.c
• __hwspin_trylock(9)
• __hwspin_lock_timeout(9)
• __hwspin_unlock(9)
• hwspin_lock_bust(9)
• of_hwspin_lock_simple_xlate(9)
• of_hwspin_lock_get_id(9)
• of_hwspin_lock_get_id_byname(9)
• hwspin_lock_unregister(9)
• devm_hwspin_lock_unregister(9)
• devm_hwspin_lock_register(9)
• __hwspin_lock_request(9)
• hwspin_lock_request_specific(9)
• hwspin_lock_free(9)
• devm_hwspin_lock_free(9)
• devm_hwspin_lock_request_specific(9)

like, that's the whole reading list — go off and read them all, iykyk 📚✨

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🦋 also quick shoutout: these are all man page section 9 entries, so you know they're kernel API stuff, not your常规 shell commands. 💜

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and that's the page!! this one came from ./drivers/hwspinlock, dated October 2026, so if you ever need to cite it: there you go, periodt 🎀💅 bye bestie, go register some spinlocks 🌀