STRUCT HWSPINLOCK_DEVICE(9)

💖 struct hwspinlock_device(9) — the group chat guide 💖

okay so bestie, welcome to struct hwspinlock_device(9) from the Kernel API Manual ✨ this one's a struct, and it's literally the device that usually spans, like, numerous hwspinlocks 👑 think of it as the mom friend holding the whole squad together 🫶

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✨ NAME ✨

struct hwspinlock_device — a device which usually spans numerous hwspinlocks 💅 no cap, that's the whole vibe

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🎀 SYNOPSIS 🎀

here's the shape of it, copy it character for character bestie, do not touch a single semicolon 😭

struct hwspinlock_device {
    struct device *dev;
    const struct hwspinlock_ops *ops;
    int base_id;
    int num_locks;
    struct hwspinlock lock[];
};

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🌸 Members 🌸

the members!! the main characters!! let's go through them one by one, each one ate 💖

• dev — the underlying device, and it will be used to invoke the runtime PM api ⭐ so yeah, that's its whole job, and it does it slayfully
• ops — the platform-specific hwspinlock handlers 🦋 every platform's got its own little personality, and this is where it lives
• base_id — the id index of the first lock in this device 🔥 like, the starting number, the origin story, the beginning of the roster
• num_locks — number of locks in this device 🌈 yep, just the count, someone has to keep track
• lock — a dynamically allocated array of 'struct hwspinlock' 💀 dynamic!! allocated!! we love a flexible array member that just keeps going and doesn't know when to stop, iykyk

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🧚 SEE ALSO 🧚

if you wanna keep reading (and honestly? you should, it's giving required reading 📚) go check these out:

• Kernel file ./drivers/hwspinlock/hwspinlock_internal.h 🍓
• struct hwspinlock_ops(9) 💜
• struct hwspinlock(9) 💅

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real talk bestie: the lock member is a dynamically allocated array, so don't go assuming it's some fixed little thing — it's built to hold however many locks the device claims 🌸

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and that's the page!! periodt 💖 huge shoutout to the ./drivers/hwspinlock crew, version vibes from October 2026 — they really said "we're from the future and we still use hwspinlocks" and honestly? iconic 👑✨💅