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 
do_IRQ(struct pt_regs * regs)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 
init_IRQ(void)35 void __init init_IRQ(void)
36 {
37 	/* process the entire interrupt tree in one go */
38 	irqchip_init();
39 }
40