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