/* * 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; }