mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 00:01:35 +00:00
a6fb72f1e9
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/*
|
|
* Copyright 2010 Tilera Corporation. All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation, version 2.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
|
|
* NON INFRINGEMENT. See the GNU General Public License for
|
|
* more details.
|
|
*/
|
|
|
|
#include <linux/smp.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/threads.h>
|
|
#include <linux/cpumask.h>
|
|
#include <linux/timex.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/sysctl.h>
|
|
#include <linux/hardirq.h>
|
|
#include <linux/mman.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/sections.h>
|
|
#include <asm/homecache.h>
|
|
#include <arch/chip.h>
|
|
|
|
|
|
/*
|
|
* Support /proc/cpuinfo
|
|
*/
|
|
|
|
#define cpu_to_ptr(n) ((void *)((long)(n)+1))
|
|
#define ptr_to_cpu(p) ((long)(p) - 1)
|
|
|
|
static int show_cpuinfo(struct seq_file *m, void *v)
|
|
{
|
|
int n = ptr_to_cpu(v);
|
|
|
|
if (n == 0) {
|
|
char buf[NR_CPUS*5];
|
|
cpulist_scnprintf(buf, sizeof(buf), cpu_online_mask);
|
|
seq_printf(m, "cpu count\t: %d\n", num_online_cpus());
|
|
seq_printf(m, "cpu list\t: %s\n", buf);
|
|
seq_printf(m, "model name\t: %s\n", chip_model);
|
|
seq_printf(m, "flags\t\t:\n"); /* nothing for now */
|
|
seq_printf(m, "cpu MHz\t\t: %llu.%06llu\n",
|
|
get_clock_rate() / 1000000,
|
|
(get_clock_rate() % 1000000));
|
|
seq_printf(m, "bogomips\t: %lu.%02lu\n\n",
|
|
loops_per_jiffy/(500000/HZ),
|
|
(loops_per_jiffy/(5000/HZ)) % 100);
|
|
}
|
|
|
|
#ifdef CONFIG_SMP
|
|
if (!cpu_online(n))
|
|
return 0;
|
|
#endif
|
|
|
|
seq_printf(m, "processor\t: %d\n", n);
|
|
|
|
/* Print only num_online_cpus() blank lines total. */
|
|
if (cpumask_next(n, cpu_online_mask) < nr_cpu_ids)
|
|
seq_printf(m, "\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void *c_start(struct seq_file *m, loff_t *pos)
|
|
{
|
|
return *pos < nr_cpu_ids ? cpu_to_ptr(*pos) : NULL;
|
|
}
|
|
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
|
|
{
|
|
++*pos;
|
|
return c_start(m, pos);
|
|
}
|
|
static void c_stop(struct seq_file *m, void *v)
|
|
{
|
|
}
|
|
const struct seq_operations cpuinfo_op = {
|
|
.start = c_start,
|
|
.next = c_next,
|
|
.stop = c_stop,
|
|
.show = show_cpuinfo,
|
|
};
|