Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | { |
Robert Richter | 6a18037 | 2008-10-16 15:01:40 +0200 | [diff] [blame^] | 22 | oprofile_add_sample(regs, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Robert Richter | 25ad291 | 2008-09-05 17:12:36 +0200 | [diff] [blame] | 38 | void __init oprofile_timer_init(struct oprofile_operations *ops) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | } |