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