irq_can_set_affinity_usr(9)

📦 version 7.3.1, in nixpkgs unstable

💅 irq_can_set_affinity_usr(9) ✨

okay so real talk bestie, this is a page straight out of the Kernel API Manual and it's honestly so underrated. it's tiny, it's specific, and it does exactly one thing — let's get into it 🫶

🌸 NAME 🌸

irq_can_set_affinity_usr — check if the affinity of an irq can actually be set from user space, no cap

✨ SYNOPSIS ✨

bool irq_can_set_affinity_usr (unsigned int irq );

that's it. one function, returns a bool, takes one arg. minimal. iconic. main character energy 👑

🎀 ARGUMENTS 🎀

  • irq — the interrupt you wanna check 💖 literally just hand it the irq number and it'll tell you what's up

🦋 DESCRIPTION 🦋

okay so picture this: it works like irq_can_set_affinity above 👆 but it's got that extra lil something. on top of everything that one does, this one additionally checks for the AFFINITY_MANAGED flag 🚩

so if that flag is in the mix, that's the whole extra vibe check this function is doing. it's giving "same but more thorough." periodt 💅

🌈 SEE ALSO 🌈

first up, the source tea ☕ — kernel file ./kernel/irq/manage.c, and then the whole friend group:

like, the whole irq cinematic universe fr fr 😭 go read them, they all ate 🔥

ngl this page lives in ./kernel/irq and it's dated October 2026 — so yeah, future vibes only 🧚‍♀️ until next time bestie, stay interruptible 💜🌸
📦 where this page comes from