ipi_send_single(9)

✨ ipi_send_single(9) ✨

okay bestie, welcome to the Kernel API Manual page for ipi_send_single(9) 💖 this one is short and sweet, and it's giving "send an IPI to exactly one CPU" energy.

🌸 NAME 🌸

ipi_send_single — Send an IPI to a single CPU 💅

✨ SYNOPSIS ✨

int ipi_send_single (unsigned int virq , unsigned int cpu );

🎀 ARGUMENTS 🎀

• virq — the Linux IRQ number from irq_reserve_ipi ✨
• cpu — the destination CPU, and it must be in the destination mask passed to irq_reserve_ipi 🫶

🔥 RETURN 🔥

0 on success, or a negative error number on failure — fr fr, that's the whole return situation 💀

🦋 SEE ALSO 🦋

• Kernel file ./kernel/irq/ipi.c
• irq_reserve_ipi(9)
• irq_destroy_ipi(9)
• ipi_get_hwirq(9)
• __ipi_send_single(9)
• __ipi_send_mask(9)
• ipi_send_mask(9)

mwah 💋 this page is sourced from ./kernel/irq, dated October 2026, and it's all about ipi_send_single(9) — bye bestie, go send exactly one IPI 💖✨