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> | |
| 13 | ||
| 14 | /* We support CPUs that have performance counters like the Pentium Pro | |
| 15 | * with the NMI mode driver. | |
| 16 | */ | |
| 17 | ||
| 18 | extern int nmi_init(struct oprofile_operations * ops); | |
| 19 | extern int nmi_timer_init(struct oprofile_operations * ops); | |
| 20 | extern void nmi_exit(void); | |
| 21 | extern void x86_backtrace(struct pt_regs * const regs, unsigned int depth); | |
| 22 | ||
| 23 | ||
| 24 | int __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 | ||
| 43 | void oprofile_arch_exit(void) | |
| 44 | { | |
| 45 | #ifdef CONFIG_X86_LOCAL_APIC | |
| 46 | nmi_exit(); | |
| 47 | #endif | |
| 48 | } |