1 /* 2 * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu> 3 * Copyright (C) 2007-2009 PetaLogix 4 * Copyright (C) 2006 Atmark Techno, Inc. 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/init.h> 12 #include <linux/ftrace.h> 13 #include <linux/kernel.h> 14 #include <linux/hardirq.h> 15 #include <linux/interrupt.h> 16 #include <linux/irqflags.h> 17 #include <linux/seq_file.h> 18 #include <linux/kernel_stat.h> 19 #include <linux/irq.h> 20 #include <linux/irqchip.h> 21 #include <linux/of_irq.h> 22 23 void __irq_entry do_IRQ(struct pt_regs *regs) 24 { 25 struct pt_regs *old_regs = set_irq_regs(regs); 26 trace_hardirqs_off(); 27 28 irq_enter(); 29 handle_arch_irq(regs); 30 irq_exit(); 31 set_irq_regs(old_regs); 32 trace_hardirqs_on(); 33 } 34 35 void __init init_IRQ(void) 36 { 37 /* process the entire interrupt tree in one go */ 38 irqchip_init(); 39 } 40