1// SPDX-License-Identifier: GPL-2.0
 2/* Copyright IBM Corp. 2020 */
 3
 4#include <linux/compiler.h>
 5#include <linux/getcpu.h>
 6#include <asm/timex.h>
 7#include "vdso.h"
 8
 9int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
10{
11	union tod_clock clk;
12
13	/* CPU number is stored in the programmable field of the TOD clock */
14	store_tod_clock_ext(&clk);
15	if (cpu)
16		*cpu = clk.pf;
17	/* NUMA node is always zero */
18	if (node)
19		*node = 0;
20	return 0;
21}