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TOMOYO Linux Cross Reference
Linux/fs/proc/interrupts.c

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  1 #include <linux/fs.h>
  2 #include <linux/init.h>
  3 #include <linux/interrupt.h>
  4 #include <linux/irqnr.h>
  5 #include <linux/proc_fs.h>
  6 #include <linux/seq_file.h>
  7 
  8 /*
  9  * /proc/interrupts
 10  */
 11 static void *int_seq_start(struct seq_file *f, loff_t *pos)
 12 {
 13         return (*pos <= nr_irqs) ? pos : NULL;
 14 }
 15 
 16 static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
 17 {
 18         (*pos)++;
 19         if (*pos > nr_irqs)
 20                 return NULL;
 21         return pos;
 22 }
 23 
 24 static void int_seq_stop(struct seq_file *f, void *v)
 25 {
 26         /* Nothing to do */
 27 }
 28 
 29 static const struct seq_operations int_seq_ops = {
 30         .start = int_seq_start,
 31         .next  = int_seq_next,
 32         .stop  = int_seq_stop,
 33         .show  = show_interrupts
 34 };
 35 
 36 static int interrupts_open(struct inode *inode, struct file *filp)
 37 {
 38         return seq_open(filp, &int_seq_ops);
 39 }
 40 
 41 static const struct file_operations proc_interrupts_operations = {
 42         .open           = interrupts_open,
 43         .read           = seq_read,
 44         .llseek         = seq_lseek,
 45         .release        = seq_release,
 46 };
 47 
 48 static int __init proc_interrupts_init(void)
 49 {
 50         proc_create("interrupts", 0, NULL, &proc_interrupts_operations);
 51         return 0;
 52 }
 53 module_init(proc_interrupts_init);
 54 

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