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1da177e4 LT |
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> | |
d717ca84 PC |
13 | |
14 | /* | |
15 | * We support CPUs that have performance counters like the Pentium Pro | |
1da177e4 LT |
16 | * with the NMI mode driver. |
17 | */ | |
d717ca84 | 18 | |
dcfce4a0 | 19 | #ifdef CONFIG_X86_LOCAL_APIC |
d717ca84 | 20 | extern int op_nmi_init(struct oprofile_operations *ops); |
96d0821c | 21 | extern void op_nmi_exit(void); |
dcfce4a0 RR |
22 | #else |
23 | static int op_nmi_init(struct oprofile_operations *ops) { return -ENODEV; } | |
24 | static void op_nmi_exit(void) { } | |
25 | #endif | |
1da177e4 | 26 | |
dcfce4a0 | 27 | extern void x86_backtrace(struct pt_regs * const regs, unsigned int depth); |
1da177e4 | 28 | |
d717ca84 | 29 | int __init oprofile_arch_init(struct oprofile_operations *ops) |
1da177e4 | 30 | { |
1da177e4 | 31 | ops->backtrace = x86_backtrace; |
dcfce4a0 | 32 | return op_nmi_init(ops); |
1da177e4 LT |
33 | } |
34 | ||
1da177e4 LT |
35 | void oprofile_arch_exit(void) |
36 | { | |
dcfce4a0 | 37 | op_nmi_exit(); |
1da177e4 | 38 | } |