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

 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
12extern const struct seq_operations cpuinfo_op;
13static int cpuinfo_open(struct inode *inode, struct file *file)
14{
15	arch_freq_prepare_all();
16	return seq_open(file, &cpuinfo_op);
17}
18
19static const struct proc_ops cpuinfo_proc_ops = {
20	.proc_flags	= PROC_ENTRY_PERMANENT,
21	.proc_open	= cpuinfo_open,
22	.proc_read_iter	= seq_read_iter,
23	.proc_lseek	= seq_lseek,
24	.proc_release	= seq_release,
25};
26
27static int __init proc_cpuinfo_init(void)
28{
29	proc_create("cpuinfo", 0, NULL, &cpuinfo_proc_ops);
30	return 0;
31}
32fs_initcall(proc_cpuinfo_init);