fs/proc/cpuinfo.c

   1 #include <linux/cpufreq.h>
   2 #include <linux/fs.h>
   3 #include <linux/init.h>
   4 #include <linux/proc_fs.h>
   5 #include <linux/seq_file.h>
   6
   7 __weak void arch_freq_prepare_all(void)
   8 {
   9 }
  10
  11 extern const struct seq_operations cpuinfo_op;
  12 static int cpuinfo_open(struct inode *inode, struct file *file)
  13 {
  14         arch_freq_prepare_all();
  15         return seq_open(file, &cpuinfo_op);
  16 }
  17
  18 static const struct file_operations proc_cpuinfo_operations = {
  19         .open           = cpuinfo_open,
  20         .read           = seq_read,
  21         .llseek         = seq_lseek,
  22         .release        = seq_release,
  23 };
  24
  25 static int __init proc_cpuinfo_init(void)
  26 {
  27         proc_create("cpuinfo", 0, NULL, &proc_cpuinfo_operations);
  28         return 0;
  29 }
  30 fs_initcall(proc_cpuinfo_init);