STRUCT CPU_RMAP(9)

✨ NAME ✨

Okay bestie, this is the Kernel API Manual, section 9, and the main character is struct cpu_rmap — aka the CPU affinity reverse-map 👑.

🦋 SYNOPSIS 🦋

struct cpu_rmap {
    struct kref     refcount;
    u16 size;
    void **obj;
    struct {
      u16 index;
      u16 dist;
    } near[];
 };

🎀 Members 🎀

• refcount — the kref for the object, keeping its little lifecycle situation under control 💅
• size — number of objects to be reverse-mapped, periodt
• obj — pointer to the array of object pointers, slay
• near — for each CPU, the index and distance to the nearest object, based on affinity masks 🫶

🌈 SEE ALSO 🌈

• Kernel file ./include/linux/cpu_rmap.h
• alloc_irq_cpu_rmap(9)

This iconic little page is brought to you by ./include/linux, dated October 2026, and yeah — struct cpu_rmap(9) really said main character energy 💅✨