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/system.h> 19 #include <asm/traps.h> 20 21 asmlinkage void do_IRQ(int irq, struct pt_regs *regs) 22 { 23 struct pt_regs *oldregs = set_irq_regs(regs); 24 25 irq_enter(); 26 generic_handle_irq(irq); 27 irq_exit(); 28 29 set_irq_regs(oldregs); 30 } 31 32 33 /* The number of spurious interrupts */ 34 atomic_t irq_err_count; 35 36 int arch_show_interrupts(struct seq_file *p, int prec) 37 { 38 seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count)); 39 return 0; 40 } 41