irq_domain_activate_irq(9)

📦 version 7.3.1, in nixpkgs unstable

💅 irq_domain_activate_irq(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this page is all about irq_domain_activate_irq, and honestly? it's kind of a big deal. it's the moment your interrupt actually gets to exist in the real world. let's get into it 🫶

✨ NAME ✨

irq_domain_activate_irq — calls domain_ops->activate recursively to activate an interrupt 💖

like, recursively-recursively. it walks the whole chain. no cap.

🎀 SYNOPSIS 🎀

int irq_domain_activate_irq (struct irq_data *irq_data , bool reserve );

that's it. two args, returns an int. clean. iconic. 💅

🌸 ARGUMENTS 🌸

  • irq_data — the outermost irq_data associated with the interrupt. yes, outermost — don't come at me with an inner one, that's not the vibe 💀
  • reserve — if this is set, you're only reserving an interrupt vector instead of actually assigning one. lowkey a "hold my spot" situation 🙈

🦋 DESCRIPTION 🦋

so here's the tea ☕: this is the second step in calling domain_ops->activate to program the interrupt controllers — and the whole point is so the interrupt can actually get delivered. like, for real for real. it's giving "the interrupt's main character moment" 👑🔥

no delivery without activation, bestie. that's just how it is periodt.

🌈 SEE ALSO 🌈

this is the part where I show you the whole friend group 💜 — all of these live in the kernel file ./kernel/irq/irqdomain.c, and they all have (9) energy:

🌟 and that's the page, bestie! huge shoutout to ./kernel/irq for the source and October 2026 for the date stamp — time-traveling manpage energy fr fr 💫 slay, go activate some interrupts, mwah 🎀💖✨
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