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/*
* File: arch/blackfin/oprofile/timer_int.c
* Based on:
* Author: Michael Kang
*
* Created:
* Description:
*
* Modified:
* Copyright 2004-2006 Analog Devices Inc.
*
* Bugs: Enter bugs at http://blackfin.uclinux.org/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see the file COPYING, or write
* to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/irq.h>
#include <linux/oprofile.h>
#include <linux/ptrace.h>
static void enable_sys_timer0()
{
}
static void disable_sys_timer0()
{
}
static irqreturn_t sys_timer0_int_handler(int irq, void *dev_id,
struct pt_regs *regs)
{
oprofile_add_sample(regs, 0);
return IRQ_HANDLED;
}
static int sys_timer0_start(void)
{
enable_sys_timer0();
return request_irq(IVG11, sys_timer0_int_handler, 0, "sys_timer0", NULL);
}
static void sys_timer0_stop(void)
{
disable_sys_timer();
}
int __init sys_timer0_init(struct oprofile_operations *ops)
{
extern int nmi_active;
if (nmi_active <= 0)
return -ENODEV;
ops->start = timer_start;
ops->stop = timer_stop;
ops->cpu_type = "timer";
printk(KERN_INFO "oprofile: using NMI timer interrupt.\n");
return 0;
}
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