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Linux/fs/proc/interrupts.c

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  1 // SPDX-License-Identifier: GPL-2.0
  2 #include <linux/fs.h>
  3 #include <linux/init.h>
  4 #include <linux/interrupt.h>
  5 #include <linux/irqnr.h>
  6 #include <linux/proc_fs.h>
  7 #include <linux/seq_file.h>
  8 
  9 /*
 10  * /proc/interrupts
 11  */
 12 static void *int_seq_start(struct seq_file *f, loff_t *pos)
 13 {
 14         return (*pos <= nr_irqs) ? pos : NULL;
 15 }
 16 
 17 static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
 18 {
 19         (*pos)++;
 20         if (*pos > nr_irqs)
 21                 return NULL;
 22         return pos;
 23 }
 24 
 25 static void int_seq_stop(struct seq_file *f, void *v)
 26 {
 27         /* Nothing to do */
 28 }
 29 
 30 static const struct seq_operations int_seq_ops = {
 31         .start = int_seq_start,
 32         .next  = int_seq_next,
 33         .stop  = int_seq_stop,
 34         .show  = show_interrupts
 35 };
 36 
 37 static int __init proc_interrupts_init(void)
 38 {
 39         proc_create_seq("interrupts", 0, NULL, &int_seq_ops);
 40         return 0;
 41 }
 42 fs_initcall(proc_interrupts_init);
 43 

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