irq_set_nr_irqs(9)

✨ irq_set_nr_irqs — the Kernel API Manual glow-up 🎀

okay so bestie, picture this: you're deep in the kernel, and somebody's gotta be the one to say "hey, here's how many interrupts this system supports." That somebody is irq_set_nr_irqs, and she is literally the main character of this page. 💅

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🌸 NAME 🌸

irq_set_nr_irqs — Set the number of interrupts supported by the system.

like, that's it. that's her whole job. and she ate. 🔥

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🦋 SYNOPSIS 🦋

unsigned int irq_set_nr_irqs (unsigned int nr );

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💖 ARGUMENTS 💖

• nr — the New number of interrupts. that's the whole vibe check right there 👑

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⭐ RETURN ⭐

Returns nr. yes, fr fr, she just hands it right back to you. iconic behavior honestly 🫶

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🌈 SEE ALSO 🌈

the whole squad, no cap — all of these live in the Kernel file ./kernel/irq/irqdesc.c:

• irq_get_nr_irqs(9)
• generic_handle_irq(9)
• generic_handle_irq_safe(9)
• generic_handle_domain_irq(9)
• generic_handle_domain_nmi(9)
• generic_handle_demux_domain_irq(9)
• irq_free_descs(9)
• __irq_alloc_descs(9)
• irq_get_next_irq(9)
• kstat_irqs_cpu(9)
• kstat_irqs_usr(9)

go read them, iykyk 💜

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and that's the page bestie!! 🧚 this lil gem lives under ./kernel/irq, dated October 2026, and it's part of the Kernel API Manual. mwah, bye! 💋🎀🌸

irq_set_nr_irqs(9)