// SPDX-License-Identifier: GPL-2.0 | |
/* Copyright IBM Corp. 2020 */ | |
#include <linux/compiler.h> | |
#include <linux/getcpu.h> | |
#include <asm/timex.h> | |
#include "vdso.h" | |
int __s390_vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused) | |
{ | |
__u16 todval[8]; | |
/* CPU number is stored in the programmable field of the TOD clock */ | |
get_tod_clock_ext((char *)todval); | |
if (cpu) | |
*cpu = todval[7]; | |
/* NUMA node is always zero */ | |
if (node) | |
*node = 0; | |
return 0; | |
} |