generic_handle_irq(9)

💖 generic_handle_irq(9) 💖

okay so welcome to the generic_handle_irq(9) page bestie, this is a Kernel API Manual moment and honestly it's giving "tiny function, big responsibility" energy ✨

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🌸 NAME 🌸

generic_handle_irq — literally just: invoke the handler for a particular irq 🎀

✨ SYNOPSIS ✨

int generic_handle_irq (unsigned int irq );

🦋 ARGUMENTS 🦋

• irq — the irq number to handle. that's it, that's the whole arg 💅

👑 RETURN 👑

• 0 on success 🎉
• -EINVAL if conversion has failed 😭

💜 DESCRIPTION 💜

okay so this is the important part and I need you to actually listen: this function must be called from an IRQ context with irq regs initialized. no cap, that's a hard requirement, not a vibe suggestion 🫶

🔥 SEE ALSO 🔥

Kernel file ./kernel/irq/irqdesc.c, plus all these iconic siblings:

• irq_get_nr_irqs(9)
• irq_set_nr_irqs(9)
• generic_handle_irq_safe(9)
• generic_handle_domain_irq(9)
• generic_handle_domain_nmi(9)
• generic_handle_demux_domain_irq(9)
• irq_free_descs(9)
• __irq_alloc_descs(9)
• irq_get_next_irq(9)
• kstat_irqs_cpu(9)
• kstat_irqs_usr(9)

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and that's the whole page, bestie, go forth and handle those irqs responsibly 💖✨

this lil masterpiece lives in ./kernel/irq and it's stamped October 2026, page generic_handle_irq(9) — mwah, bye 🎀🦋