LXR linux/arch/x86/entry/vdso/vgetcpu.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Copyright 2006 Andi Kleen, SUSE Labs.
   4 *
   5 * Fast user context implementation of getcpu()
   6 */
   7
   8#include <linux/kernel.h>
   9#include <linux/getcpu.h>
  10#include <linux/time.h>
  11#include <asm/vgtod.h>
  12
  13notrace long
  14__vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
  15{
  16        vdso_read_cpunode(cpu, node);
  17
  18        return 0;
  19}
  20
  21long getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *tcache)
  22        __attribute__((weak, alias("__vdso_getcpu")));
  23