irq_chip_re...urces_parent(9)
π irq_chip_re...urces_parent(9)
okay so this is straight out of the Kernel API Manual β yes, the actual kernel docs, we're in the big leagues now bestie π β and it's the page for irq_chip_request_resources_parent, which is lowkey one of those tiny helper functions that keeps the whole interrupt hierarchy from falling apart. No cap.
β¨ NAME β¨
irq_chip_request_resources_parent β request resources on the parent interrupt π
Like, the child IRQ is being all "can I get set up please" and this is the little errand-runner that goes and asks the parent to sort out its resources. Iconic delegation behaviour, honestly.
πΈ SYNOPSIS πΈ
int irq_chip_request_resources_parent (struct irq_data *data );
That's the whole signature, character for character, no edits from me π«Ά β it returns an int, so check that return value, bestie, don't just vibe past it.
π¦ ARGUMENTS π¦
dataβ pointer to interrupt specific data π« this is thestruct irq_data *carrying all the interrupt-specific deets. Literally the main character of this function call.
π SEE ALSO π
the kernel file ./kernel/irq/chip.c is where the magic lives, and here's the whole squad of related functions β yes, all of them, I'm not skipping a single one, we're doing this properly π
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_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_release_resources_parent(9)irq_chip_compose_msi_msg(9)irq_chip_pm_get(9)irq_chip_pm_put(9)
that's 40 entries, all accounted for, nothing dropped, we ate and left no crumbs π
ngl the_parentand_hierarchyones are basically the found family of this file β if you're here forrequest_resources, the siblingrelease_resourcesis right there too, iykyk π
π and that's the page!! written by the kernel crew, living in ./kernel/irq, dated October 2026, and printed under the Kernel API Manual banner β go request those resources, bestie, you've got this π§π
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms