LXR linux/arch/x86/oprofile/init.c

   1/**
   2 * @file init.c
   3 *
   4 * @remark Copyright 2002 OProfile authors
   5 * @remark Read the file COPYING
   6 *
   7 * @author John Levon <levon@movementarian.org>
   8 */
   9
  10#include <linux/oprofile.h>
  11#include <linux/init.h>
  12#include <linux/errno.h>
  13
  14/*
  15 * We support CPUs that have performance counters like the Pentium Pro
  16 * with the NMI mode driver.
  17 */
  18
  19#ifdef CONFIG_X86_LOCAL_APIC
  20extern int op_nmi_init(struct oprofile_operations *ops);
  21extern void op_nmi_exit(void);
  22#else
  23static int op_nmi_init(struct oprofile_operations *ops) { return -ENODEV; }
  24static void op_nmi_exit(void) { }
  25#endif
  26
  27extern void x86_backtrace(struct pt_regs * const regs, unsigned int depth);
  28
  29int __init oprofile_arch_init(struct oprofile_operations *ops)
  30{
  31        ops->backtrace = x86_backtrace;
  32        return op_nmi_init(ops);
  33}
  34
  35void oprofile_arch_exit(void)
  36{
  37        op_nmi_exit();
  38}
  39