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/arch/i386/oprofile/init.c

https://bitbucket.org/evzijst/gittest
C | 48 lines | 27 code | 10 blank | 11 comment | 1 complexity | 9016bccc74e607ea3d9eed41edb48b9d MD5 | raw file
 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/* We support CPUs that have performance counters like the Pentium Pro
15 * with the NMI mode driver.
16 */
17 
18extern int nmi_init(struct oprofile_operations * ops);
19extern int nmi_timer_init(struct oprofile_operations * ops);
20extern void nmi_exit(void);
21extern void x86_backtrace(struct pt_regs * const regs, unsigned int depth);
22
23
24int __init oprofile_arch_init(struct oprofile_operations * ops)
25{
26	int ret;
27
28	ret = -ENODEV;
29
30#ifdef CONFIG_X86_LOCAL_APIC
31	ret = nmi_init(ops);
32#endif
33#ifdef CONFIG_X86_IO_APIC
34	if (ret < 0)
35		ret = nmi_timer_init(ops);
36#endif
37	ops->backtrace = x86_backtrace;
38
39	return ret;
40}
41
42
43void oprofile_arch_exit(void)
44{
45#ifdef CONFIG_X86_LOCAL_APIC
46	nmi_exit();
47#endif
48}