55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/fs.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/irqnr.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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/*
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* /proc/interrupts
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*/
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static void *int_seq_start(struct seq_file *f, loff_t *pos)
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{
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return (*pos <= nr_irqs) ? pos : NULL;
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}
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static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
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{
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(*pos)++;
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if (*pos > nr_irqs)
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return NULL;
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return pos;
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}
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static void int_seq_stop(struct seq_file *f, void *v)
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{
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/* Nothing to do */
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}
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static const struct seq_operations int_seq_ops = {
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.start = int_seq_start,
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.next = int_seq_next,
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.stop = int_seq_stop,
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.show = show_interrupts
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};
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static int interrupts_open(struct inode *inode, struct file *filp)
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{
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return seq_open(filp, &int_seq_ops);
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}
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static const struct file_operations proc_interrupts_operations = {
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.open = interrupts_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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static int __init proc_interrupts_init(void)
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{
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proc_create("interrupts", 0, NULL, &proc_interrupts_operations);
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return 0;
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}
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fs_initcall(proc_interrupts_init);
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