scx_bpf_cpu_node(9)

✨ scx_bpf_cpu_node(9) — Kernel API Manual, section 9 ✨

okay so welcome to the scx_bpf_cpu_node(9) page, bestie — it’s giving Kernel API Manual, section 9, and it’s a short one. Let’s get into it 🫶

🌸 NAME 🌸

scx_bpf_cpu_node — Return the NUMA node the given @cpu belongs to, or trigger an error if @cpu is invalid 💅

🦋 SYNOPSIS 🦋

__bpf_kfunc s32 scx_bpf_cpu_node (s32 cpu , const struct bpf_prog_aux
*aux );

💖 ARGUMENTS 💖

• cpu — target CPU 🎯
• aux — implicit BPF argument to access bpf_prog_aux hidden from BPF progs 🙈

🫶 SEE ALSO 🫶

Kernel file: ./kernel/sched/ext/idle.c — that’s the spot. The whole friend group is here too, no cap:

• scx_bpf_select_cpu_dfl(9)
• __scx_bpf_select_cpu_and(9)
• scx_bpf_get_idle_cpumask_node(9)
• scx_bpf_get_idle_cpumask(9)
• scx_bpf_get_idle_smtmask_node(9)
• scx_bpf_get_idle_smtmask(9)
• scx_bpf_put_idle_cpumask(9)
• scx_bpf_test_and_clear_cpu_idle(9)
• scx_bpf_pick_idle_cpu_node(9)
• scx_bpf_pick_idle_cpu(9)
• scx_bpf_pick_any_cpu_node(9)
• scx_bpf_pick_any_cpu(9)

xoxo, bestie 💖 — source/version: ./kernel/sched/ext; date: October 2026; page: scx_bpf_cpu_node(9) ✨