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  extern const struct seq_operations cpuinfo_op;
9  
cpuinfo_open(struct inode * inode,struct file * file)10  static int cpuinfo_open(struct inode *inode, struct file *file)
11  {
12  	return seq_open(file, &cpuinfo_op);
13  }
14  
15  static const struct proc_ops cpuinfo_proc_ops = {
16  	.proc_flags	= PROC_ENTRY_PERMANENT,
17  	.proc_open	= cpuinfo_open,
18  	.proc_read_iter	= seq_read_iter,
19  	.proc_lseek	= seq_lseek,
20  	.proc_release	= seq_release,
21  };
22  
proc_cpuinfo_init(void)23  static int __init proc_cpuinfo_init(void)
24  {
25  	proc_create("cpuinfo", 0, NULL, &cpuinfo_proc_ops);
26  	return 0;
27  }
28  fs_initcall(proc_cpuinfo_init);
29