STRUCT IRQ_AFFINITY_NOTIFY(9)

💅 struct irq_affinity_notify(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this one's all about struct irq_affinity_notify, aka the little context blob that lets you get pinged when an IRQ's affinity changes 🦋 (yes, the kernel will literally text you about it, no cap).

✨ NAME ✨

struct irq_affinity_notify — the context for notification of IRQ affinity changes 💖

🌸 SYNOPSIS 🌸

struct irq_affinity_notify {
    unsigned int irq;
    struct kref kref;
    struct work_struct work;
    void (*notify)(struct irq_affinity_notify *, const cpumask_t *mask);
    void (*release)(struct kref *ref);
 };

🎀 Members 🎀

• irq — the interrupt this notification applies to 🔥 like, which IRQ are we gossiping about
• kref — the reference count, for internal use 🙈 hands off, it's private
• work — the work item, for internal use 🧚 also private, also not your business
• notify — the function to be called on change 💫 and heads up: this will be called in process context
• release — the function to be called on release 📣 also called in process context. and bestie, listen: once it's registered, the structure must only be freed when this function is called or later 👑 that's the rule, periodt

⭐ SEE ALSO ⭐

Kernel file ./include/linux/interrupt.h struct irqaction(9), request_irq(9), struct irq_affinity(9), struct irq_affinity_desc(9), irq_update_affinity_hint(9), irq_set_affinity_and_hint(9) 🌈 go read those next, iykyk

and that's the whole vibe check, bestie 💜 this page came straight out of ./include/linux and it's dated October 2026 — so like, from the future, main character energy fr fr 🫶 slay, go notify somebody 😭🎀