linux-stable/fs/proc/version.c
Alexey Dobriyan ef1d61781b proc: mark more files as permanent
Mark
	/proc/devices
	/proc/kpagecount
	/proc/kpageflags
	/proc/kpagecgroup
	/proc/loadavg
	/proc/meminfo
	/proc/softirqs
	/proc/uptime
	/proc/version

as permanent /proc entries, saving alloc/free and some list/spinlock ops
per use.

These files are never removed by the kernel so it is OK to mark them.

Link: https://lkml.kernel.org/r/Yyn527DzDMa+r0Yj@localhost.localdomain
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-10-03 14:21:45 -07:00

27 lines
599 B
C

// SPDX-License-Identifier: GPL-2.0
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/utsname.h>
#include "internal.h"
static int version_proc_show(struct seq_file *m, void *v)
{
seq_printf(m, linux_proc_banner,
utsname()->sysname,
utsname()->release,
utsname()->version);
return 0;
}
static int __init proc_version_init(void)
{
struct proc_dir_entry *pde;
pde = proc_create_single("version", 0, NULL, version_proc_show);
pde_make_permanent(pde);
return 0;
}
fs_initcall(proc_version_init);