fs/proc/cpuinfo.c

Source file repositories/reference/linux-study-clean/fs/proc/cpuinfo.c

File Facts

System
Linux kernel
Corpus path
fs/proc/cpuinfo.c
Extension
.c
Size
670 bytes
Lines
29
Domain
Core OS
Bucket
VFS And Filesystem Core
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
#include <linux/cpufreq.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>

extern const struct seq_operations cpuinfo_op;

static int cpuinfo_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &cpuinfo_op);
}

static const struct proc_ops cpuinfo_proc_ops = {
	.proc_flags	= PROC_ENTRY_PERMANENT,
	.proc_open	= cpuinfo_open,
	.proc_read_iter	= seq_read_iter,
	.proc_lseek	= seq_lseek,
	.proc_release	= seq_release,
};

static int __init proc_cpuinfo_init(void)
{
	proc_create("cpuinfo", 0, NULL, &cpuinfo_proc_ops);
	return 0;
}
fs_initcall(proc_cpuinfo_init);

Annotation

Implementation Notes