47 lines
822 B
C
47 lines
822 B
C
|
/**
|
||
|
|
* @file timer_int.c
|
||
|
|
*
|
||
|
|
* @remark Copyright 2002 OProfile authors
|
||
|
|
* @remark Read the file COPYING
|
||
|
|
*
|
||
|
|
* @author John Levon <levon@movementarian.org>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/notifier.h>
|
||
|
|
#include <linux/smp.h>
|
||
|
|
#include <linux/oprofile.h>
|
||
|
|
#include <linux/profile.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <asm/ptrace.h>
|
||
|
|
|
||
|
|
#include "oprof.h"
|
||
|
|
|
||
|
|
static int timer_notify(struct pt_regs *regs)
|
||
|
|
{
|
||
|
|
oprofile_add_sample(regs, 0);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int timer_start(void)
|
||
|
|
{
|
||
|
|
return register_timer_hook(timer_notify);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static void timer_stop(void)
|
||
|
|
{
|
||
|
|
unregister_timer_hook(timer_notify);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void __init oprofile_timer_init(struct oprofile_operations *ops)
|
||
|
|
{
|
||
|
|
ops->create_files = NULL;
|
||
|
|
ops->setup = NULL;
|
||
|
|
ops->shutdown = NULL;
|
||
|
|
ops->start = timer_start;
|
||
|
|
ops->stop = timer_stop;
|
||
|
|
ops->cpu_type = "timer";
|
||
|
|
}
|