irq_set_handler_data(9)

💖 irq_set_handler_data(9) 💖

okay so bestie, this page comes straight from the Kernel API Manual, and we're talking about irq_set_handler_data — she's iconic for setting irq handler data for an irq. no cap. 💅

✨ NAME ✨

irq_set_handler_data — set irq handler data for an irq 🎀

🌸 SYNOPSIS 🌸

int irq_set_handler_data (unsigned int irq , void *data );

the way that this is the whole signature — short, sweet, and to the point 🫶

🦋 ARGUMENTS 🦋

• irq — Interrupt number. that's the interrupt number, bestie 🧚
• data — Pointer to interrupt specific data. a pointer to interrupt specific data — yes, it points at the data, periodt. 💜

🍓 DESCRIPTION 🍓

so what does she actually do? She sets the hardware irq controller data for an irq. That's the whole mission. slay ✨

👑 SEE ALSO 👑

The Kernel file is ./kernel/irq/chip.c, and here's the whole friend group — every single one, no skips 💖:

• irq_set_chip(9)
• irq_set_irq_type(9)
• irq_set_msi_desc_off(9)
• irq_set_msi_desc(9)
• irq_set_chip_data(9)
• irq_disable(9)
• handle_nested_irq(9)
• handle_simple_irq(9)
• handle_untracked_irq(9)
• handle_level_irq(9)
• handle_fasteoi_irq(9)
• handle_fasteoi_nmi(9)
• handle_edge_irq(9)
• handle_percpu_irq(9)
• handle_percpu_devid_irq(9)
• irq_cpu_online(9)
• irq_cpu_offline(9)
• handle_fasteoi_ack_irq(9)
• handle_fasteoi_mask_irq(9)
• irq_chip_set_parent_state(9)
• irq_chip_get_parent_state(9)
• irq_chip_shutdown_parent(9)
• irq_chip_startup_parent(9)
• irq_chip_enable_parent(9)
• irq_chip_disable_parent(9)
• irq_chip_ack_parent(9)
• irq_chip_mask_parent(9)
• irq_chip_mask_ack_parent(9)
• irq_chip_unmask_parent(9)
• irq_chip_eoi_parent(9)
• irq_chip_set_affinity_parent(9)
• irq_chip_set_type_parent(9)
• irq_chip_retrigger_hierarchy(9)
• irq_chip_set_vcpu_affinity_parent(9)
• irq_chip_set_wake_parent(9)
• irq_chip_request_resources_parent(9)
• irq_chip_release_resources_parent(9)
• irq_chip_compose_msi_msg(9)
• irq_chip_pm_get(9)
• irq_chip_pm_put(9)

okay bye bestie 💖 — source/version: ./kernel/irq · date: October 2026 · manual: Kernel API Manual · page: irq_set_handler_data(9) 🎀✨