ice_get_irq_res(9)

💖 ice_get_irq_res(9) — Kernel API Manual, bestie edition 💖

okay so welcome to ice_get_irq_res(9), a genuine little kernel API manual page for the ice driver fam, and yes I'm gonna walk you through it like we're texting at 2am 🫶

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✨ NAME ✨

ice_get_irq_res — get an interrupt resource. that's it, that's the whole name, and honestly? iconic. 👑

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🌸 SYNOPSIS 🌸

struct ice_irq_entry * ice_get_irq_res (struct ice_pf *pf , bool
       dyn_allowed );

look at her. two args, one return, zero drama. copy it exactly, no cap 💅

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🎀 ARGUMENTS 🎀

• pf — the board private structure. like, the driver's own little private stash of board info, yk? 🦋
• dyn_allowed — a bool that says whether this entry is allowed to be dynamically allocated. so like, yes-alloc or no-alloc energy 🙈

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⭐ DESCRIPTION ⭐

so what does she do. she allocates a new irq entry in the free slot of the tracker. simple as that, main character behaviour ✨

and because xarray is used here, she always allocates the new entry at the lowest possible index. always. lowest. possible. index. the way that xarray just does that? obsessed 😭

she also sets the proper allocation limit for the maximum tracker entries — so the cap on the tracker gets set correctly, no vibes-based limits happening here fr fr 🧚

Returns the allocated irq entry, or NULL on failure. if it flops, you get NULL, and that's the whole story 💀

lowkey important: NULL on failure is the only failure signal she gives you. check it. periodt.

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/ethernet/intel/ice/ice_irq.c — the actual source, go read her 💖
• ice_init_irq_tracker(9)
• ice_deinit_irq_tracker(9)
• ice_free_irq_res(9)
• ice_clear_interrupt_scheme(9)
• ice_init_interrupt_scheme(9)
• ice_alloc_irq(9)
• ice_free_irq(9)
• ice_virt_get_irqs(9)
• ice_virt_free_irqs(9)

the whole friend group, all linked up, we love a connected cast 🫶✨

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and that's the page!! sign-off time: this one lives in ./drivers/net/ethernet/intel/ice, dated October 2026, and it's ice_get_irq_res(9) — slay, bye bestie 💅🎀🔥