irq_matrix_reserve(9)

💅 irq_matrix_reserve(9) — the Kernel API Manual page, bestie edition ✨

okay so real talk, this one lives in the Kernel API Manual, section 9, and it's called irq_matrix_reserve — say it with me, reserve 🎀

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✨ NAME ✨

irq_matrix_reserve — Reserve interrupts 💖

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🌸 SYNOPSIS 🌸

void irq_matrix_reserve (struct irq_matrix *m );

bestie it returns void. nothing comes back. it just does the thing ✨

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🦋 ARGUMENTS 🦋

• m — Matrix pointer. that's your matrix, your main character struct irq_matrix 🫶

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💜 DESCRIPTION 💜

okay so listen, lowkey the most important thing here: this is merely a book keeping call. like, it's giving admin work, not glamour 💅

it increments the number of globally reserved interrupt bits — w/o actually allocating them. none of the real resources get touched, it's just the number going up, iykyk 📈

and that's actually iconic, because it means you can setup interrupt descriptors w/o assigning low level resources to it. build the whole outfit first, pick up the accessories later 💖

the actual allocation happens when the interrupt gets activated. that's when the real stuff kicks in. periodt. 👑

ngl bestie, don't go thinking this reserves anything physical — it's counting and vibes only, the real grab happens at activation time 🔥

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🌈 SEE ALSO 🌈

the whole friend group fr fr, go say hi 💫

• Kernel file ./kernel/irq/matrix.c
• irq_alloc_matrix(9)
• irq_matrix_online(9)
• irq_matrix_offline(9)
• irq_matrix_assign_system(9)
• irq_matrix_reserve_managed(9)
• irq_matrix_remove_managed(9)
• irq_matrix_alloc_managed(9)
• irq_matrix_assign(9)
• irq_matrix_remove_reserved(9)
• irq_matrix_alloc(9)
• irq_matrix_free(9)
• irq_matrix_available(9)
• irq_matrix_reserved(9)
• irq_matrix_allocated(9)
• irq_matrix_debug_show(9)

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okay that's the page!! 🍓 she's filed under ./kernel/irq and dated October 2026 — screenshot it, cite it, slay it, mwah 💋🧚⭐