// 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) { union tod_clock clk; /* CPU number is stored in the programmable field of the TOD clock */ store_tod_clock_ext(&clk); if (cpu) *cpu = clk.pf; /* NUMA node is always zero */ if (node) *node = 0; return 0; }