STRUCT IRQ_BYPASS_PRODUCER(9)

💅 NAME 💅

struct irq_bypass_producer — okay so this is the IRQ bypass producer definition, and it's giving very "backstage pass for interrupts" energy ✨

So the manual we're living in rn is the Kernel API Manual — welcome, bestie, take a seat 🎀

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🌸 SYNOPSIS 🌸

struct irq_bypass_producer {
    struct eventfd_ctx *eventfd;
    struct irq_bypass_consumer *consumer;
    int irq;
    int (*add_consumer)(struct irq_bypass_producer *, struct
irq_bypass_consumer *);
    void (*del_consumer)(struct irq_bypass_producer *, struct
irq_bypass_consumer *);
    void (*stop)(struct irq_bypass_producer *);
    void (*start)(struct irq_bypass_producer *);
 };

Like, that's the whole struct, no cap. Every field explained below, keep scrolling 🫶

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✨ Members ✨

• eventfd — the eventfd context, aka the little matchmaker that pairs producers up with consumers. It's literally how they find each other 💖
• consumer — the connected consumer. If it's NULL, nobody's linked up yet — she's single and mingling 🙈
• irq — the Linux IRQ number for the producer device. The digits. The identity. The whole vibe 🔥
• add_consumer — connects the IRQ producer to an IRQ consumer. It's optional, so no pressure bestie 💅
• del_consumer — disconnects the IRQ producer from an IRQ consumer. Also optional — the breakup is consensual 😭
• stop — performs any quiesce operations necessary prior to add/del. Optional, but like… do it before, okay? Order matters ⭐
• start — performs any startup operations necessary after add/del. Optional, and it comes after. Bookend behavior 👑

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🦋 Description 🦋

So the IRQ bypass producer structure represents an interrupt source — like, it's the plug, not the socket — and it exists so it can participate in possible host bypass. The icon behavior fr fr.

Concrete example for the girlies who need one: an interrupt vector for a physical device that's been assigned to a VM. That's the producer. That's the whole job. She supplies, the consumer receives, and the host gets bypassed 💜

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🌈 SEE ALSO 🌈

• Kernel file ./include/linux/irqbypass.h — go read it, iykyk 📖
• struct irq_bypass_consumer(9) — the other half of this situationship, lowkey iconic 👑

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ngl, the struct is small but she's doing a LOT of work. Respect the producer 🫡

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okay that's the whole page, bestie — mwah 💋 this came out of ./include/linux, dated October 2026, and no I will not be taking questions about how the future got here 🧚✨