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 | } |