fs/proc/cpuinfo.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/cpufreq.h>
   3 #include <linux/fs.h>
   4 #include <linux/init.h>
   5 #include <linux/proc_fs.h>
   6 #include <linux/seq_file.h>
   7
   8 __weak void arch_freq_prepare_all(void)
   9 {
  10 }
  11
  12 extern const struct seq_operations cpuinfo_op;
  13 static int cpuinfo_open(struct inode *inode, struct file *file)
  14 {
  15         arch_freq_prepare_all();
  16         return seq_open(file, &cpuinfo_op);
  17 }
  18
  19 static const struct proc_ops cpuinfo_proc_ops = {
  20         .proc_flags     = PROC_ENTRY_PERMANENT,
  21         .proc_open      = cpuinfo_open,
  22         .proc_read      = seq_read,
  23         .proc_lseek     = seq_lseek,
  24         .proc_release   = seq_release,
  25 };
  26
  27 static int __init proc_cpuinfo_init(void)
  28 {
  29         proc_create("cpuinfo", 0, NULL, &cpuinfo_proc_ops);
  30         return 0;
  31 }
  32 fs_initcall(proc_cpuinfo_init);