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