irq_gc_mask..._and_ack_set(9)

💅 irq_gc_mask..._and_ack_set — Kernel API Manual core

okay so bestie, welcome to the group chat where we talk about irq_gc_mask..._and_ack_set, straight out of the Kernel API Manual. this one's a lil niche but it's iconic in its own way, i promise. sit down, grab a 🍓, let's go.

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✨ NAME ✨

irq_gc_mask_disable_and_ack_set — literally the function that masks and acks a pending interrupt. that's it, that's the whole job. she's a double-duty queen 👑

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🦋 SYNOPSIS 🦋

void irq_gc_mask_disable_and_ack_set (struct irq_data *d );

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🎀 ARGUMENTS 🎀

• d — an irq_data. that's the whole argument list bestie, one (1) single pointer, no cap. it's giving minimalism 💅

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🌸 DESCRIPTION 🌸

so here's the tea ☕ — this is the generic implementation of the irq_mask_ack method, and it exists for a very specific kind of chip:

• chips that have separate enable/disable registers instead of just one single mask register (yes, some chips are extra like that 🙈), and
• chips where a pending interrupt gets acknowledged by setting a bit ✨

that's the vibe check she has to pass. both things, or she's not your girl.

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🔥 NOTE 🔥

fr fr, this is the only permutation currently used. if some other permutation ever becomes a thing, similar generic functions should be added right here. so like... don't come for her with a permutation she's never heard of 😭

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👑 SEE ALSO 👑

it's in the kernel file ./kernel/irq/generic-chip.c — go say hi to the whole fam:

• irq_gc_noop(9)
• irq_gc_mask_disable_reg(9)
• irq_gc_mask_set_bit(9)
• irq_gc_mask_clr_bit(9)
• irq_gc_unmask_enable_reg(9)
• irq_gc_ack_set_bit(9)
• irq_gc_ack_clr_bit(9)
• irq_gc_eoi(9)
• irq_gc_set_wake(9)
• irq_alloc_generic_chip(9)
• irq_domain_alloc_generic_chips(9)
• irq_domain_remove_generic_chips(9)
• __irq_alloc_domain_generic_chips(9)
• irq_get_domain_generic_chip(9)
• irq_setup_generic_chip(9)
• irq_setup_alt_chip(9)
• irq_remove_generic_chip(9)

the whole squad showed up, we love a full roster 🫶🌈

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and that's the post 🎀 sourced from ./kernel/irq, dated October 2026 — mwah, catch you in the next page bestie 💖✨🦋