1 /* 2 * irq.c 3 * 4 * (C) Copyright 2007, Greg Ungerer <gerg@snapgear.com> 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file COPYING in the main directory of this archive 8 * for more details. 9 */ 10 11 #include <linux/types.h> 12 #include <linux/init.h> 13 #include <linux/kernel.h> 14 #include <linux/kernel_stat.h> 15 #include <linux/interrupt.h> 16 #include <linux/irq.h> 17 #include <linux/seq_file.h> 18 #include <asm/traps.h> 19 20 asmlinkage void do_IRQ(int irq, struct pt_regs *regs) 21 { 22 struct pt_regs *oldregs = set_irq_regs(regs); 23 24 irq_enter(); 25 generic_handle_irq(irq); 26 irq_exit(); 27 28 set_irq_regs(oldregs); 29 } 30 31 32 /* The number of spurious interrupts */ 33 atomic_t irq_err_count; 34 35 int arch_show_interrupts(struct seq_file *p, int prec) 36 { 37 seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count)); 38 return 0; 39 } 40