File: getcpu.c

package info (click to toggle)
linux 6.12.57-1
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 1,676,308 kB
  • sloc: ansic: 25,926,848; asm: 269,617; sh: 136,597; python: 65,447; makefile: 55,731; perl: 37,752; xml: 19,284; cpp: 5,895; yacc: 4,927; lex: 2,939; awk: 1,594; sed: 28; ruby: 25
file content (21 lines) | stat: -rw-r--r-- 467 bytes parent folder | download | duplicates (20) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
// 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;
}