| 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 | |
| 9 | int __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 | } |
| 22 |