1 // SPDX-License-Identifier: GPL-2.0 !! 1 /*
2 // Copyright (C) 2018 Hangzhou C-SKY Microsyst !! 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 */
3 10
>> 11 #include <linux/types.h>
4 #include <linux/init.h> 12 #include <linux/init.h>
>> 13 #include <linux/kernel.h>
>> 14 #include <linux/kernel_stat.h>
5 #include <linux/interrupt.h> 15 #include <linux/interrupt.h>
6 #include <linux/irq.h> 16 #include <linux/irq.h>
7 #include <linux/irqchip.h> !! 17 #include <linux/seq_file.h>
8 #include <asm/traps.h> 18 #include <asm/traps.h>
9 #include <asm/smp.h> <<
10 19
11 void __init init_IRQ(void) !! 20 asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
12 { 21 {
13 irqchip_init(); !! 22 struct pt_regs *oldregs = set_irq_regs(regs);
14 #ifdef CONFIG_SMP !! 23
15 setup_smp_ipi(); !! 24 irq_enter();
16 #endif !! 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;
17 } 39 }
18 40
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.