handle_percpu_irq(9)

🌸 NAME 🌸

handle_percpu_irq — Per CPU local irq handler 💅

okay bestie, welcome to the handle_percpu_irq(9) page from the Kernel API Manual. this is the whole vibe: it’s a per CPU local irq handler, and yes the description is literally right there in the name. periodt.

✨ SYNOPSIS ✨

the signature is serving exactly this:

void handle_percpu_irq (struct irq_desc *desc );

🫶 ARGUMENTS 🫶

• desc — the interrupt description structure for this irq. that’s the argument, bestie, no extra lore 🎀

💫 DESCRIPTION 💫

okay so the actual deal is per CPU interrupts on SMP machines without locking requirements. that’s the description, and honestly it ate: per CPU interrupts, SMP machines, no locking requirements. no cap. 💅✨

🌈 SEE ALSO 🌈

the kernel file is ./kernel/irq/chip.c, and here’s the whole bestie lineup — every single one, iykyk:

• irq_set_chip(9)
• irq_set_irq_type(9)
• irq_set_handler_data(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_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)

bye bestie 🫶 — this page is sourced from ./kernel/irq, dated October 2026, and it’s literally handle_percpu_irq(9). mwah 💋