projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 PC |
18 | |
| 19 | extern int op_nmi_init(struct oprofile_operations *ops); | |
| 20 | extern int op_nmi_timer_init(struct oprofile_operations *ops); | |
| 96d0821c | 21 | extern void op_nmi_exit(void); |
| 1da177e4 LT |
22 | extern void x86_backtrace(struct pt_regs * const regs, unsigned int depth); |
| 23 | ||
| 24 | ||
| d717ca84 | 25 | int __init oprofile_arch_init(struct oprofile_operations *ops) |
| 1da177e4 LT |
26 | { |
| 27 | int ret; | |
| 28 | ||
| 29 | ret = -ENODEV; | |
| 30 | ||
| 31 | #ifdef CONFIG_X86_LOCAL_APIC | |
| 96d0821c | 32 | ret = op_nmi_init(ops); |
| 1da177e4 LT |
33 | #endif |
| 34 | #ifdef CONFIG_X86_IO_APIC | |
| 35 | if (ret < 0) | |
| 96d0821c | 36 | ret = op_nmi_timer_init(ops); |
| 1da177e4 LT |
37 | #endif |
| 38 | ops->backtrace = x86_backtrace; | |
| 39 | ||
| 40 | return ret; | |
| 41 | } | |
| 42 | ||
| 43 | ||
| 44 | void oprofile_arch_exit(void) | |
| 45 | { | |
| 46 | #ifdef CONFIG_X86_LOCAL_APIC | |
| 96d0821c | 47 | op_nmi_exit(); |
| 1da177e4 LT |
48 | #endif |
| 49 | } |