mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-27 14:14:24 +08:00
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>
38 lines
825 B
C
38 lines
825 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/init.h>
|
|
#include <linux/kernel_stat.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/seq_file.h>
|
|
#include "internal.h"
|
|
|
|
/*
|
|
* /proc/softirqs ... display the number of softirqs
|
|
*/
|
|
static int show_softirqs(struct seq_file *p, void *v)
|
|
{
|
|
int i, j;
|
|
|
|
seq_puts(p, " ");
|
|
for_each_possible_cpu(i)
|
|
seq_printf(p, "CPU%-8d", i);
|
|
seq_putc(p, '\n');
|
|
|
|
for (i = 0; i < NR_SOFTIRQS; i++) {
|
|
seq_printf(p, "%12s:", softirq_to_name[i]);
|
|
for_each_possible_cpu(j)
|
|
seq_printf(p, " %10u", kstat_softirqs_cpu(i, j));
|
|
seq_putc(p, '\n');
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int __init proc_softirqs_init(void)
|
|
{
|
|
struct proc_dir_entry *pde;
|
|
|
|
pde = proc_create_single("softirqs", 0, NULL, show_softirqs);
|
|
pde_make_permanent(pde);
|
|
return 0;
|
|
}
|
|
fs_initcall(proc_softirqs_init);
|