mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 02:30:34 +02:00
ef1d61781b
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>
37 lines
963 B
C
37 lines
963 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/fs.h>
|
|
#include <linux/init.h>
|
|
#include <linux/pid_namespace.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/sched/loadavg.h>
|
|
#include <linux/sched/stat.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/seqlock.h>
|
|
#include <linux/time.h>
|
|
#include "internal.h"
|
|
|
|
static int loadavg_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
unsigned long avnrun[3];
|
|
|
|
get_avenrun(avnrun, FIXED_1/200, 0);
|
|
|
|
seq_printf(m, "%lu.%02lu %lu.%02lu %lu.%02lu %u/%d %d\n",
|
|
LOAD_INT(avnrun[0]), LOAD_FRAC(avnrun[0]),
|
|
LOAD_INT(avnrun[1]), LOAD_FRAC(avnrun[1]),
|
|
LOAD_INT(avnrun[2]), LOAD_FRAC(avnrun[2]),
|
|
nr_running(), nr_threads,
|
|
idr_get_cursor(&task_active_pid_ns(current)->idr) - 1);
|
|
return 0;
|
|
}
|
|
|
|
static int __init proc_loadavg_init(void)
|
|
{
|
|
struct proc_dir_entry *pde;
|
|
|
|
pde = proc_create_single("loadavg", 0, NULL, loadavg_proc_show);
|
|
pde_make_permanent(pde);
|
|
return 0;
|
|
}
|
|
fs_initcall(proc_loadavg_init);
|