projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /** |
| 2 | * @file timer_int.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/kernel.h> | |
| 11 | #include <linux/notifier.h> | |
| 12 | #include <linux/smp.h> | |
| 13 | #include <linux/oprofile.h> | |
| 14 | #include <linux/profile.h> | |
| 15 | #include <linux/init.h> | |
| 16 | #include <asm/ptrace.h> | |
| 17 | ||
| 18 | #include "oprof.h" | |
| 19 | ||
| 20 | static int timer_notify(struct pt_regs *regs) | |
| 21 | { | |
| 6a18037d | 22 | oprofile_add_sample(regs, 0); |
| 1da177e4 LT |
23 | return 0; |
| 24 | } | |
| 25 | ||
| 26 | static int timer_start(void) | |
| 27 | { | |
| 28 | return register_timer_hook(timer_notify); | |
| 29 | } | |
| 30 | ||
| 31 | ||
| 32 | static void timer_stop(void) | |
| 33 | { | |
| 34 | unregister_timer_hook(timer_notify); | |
| 35 | } | |
| 36 | ||
| 37 | ||
| 25ad2913 | 38 | void __init oprofile_timer_init(struct oprofile_operations *ops) |
| 1da177e4 LT |
39 | { |
| 40 | ops->create_files = NULL; | |
| 41 | ops->setup = NULL; | |
| 42 | ops->shutdown = NULL; | |
| 43 | ops->start = timer_start; | |
| 44 | ops->stop = timer_stop; | |
| 45 | ops->cpu_type = "timer"; | |
| 46 | } |