mirror of https://gitee.com/openkylin/linux.git
164 lines
3.5 KiB
C
164 lines
3.5 KiB
C
/*
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* Copyright 2010 Tilera Corporation. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for
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* more details.
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*/
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#include <linux/smp.h>
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#include <linux/seq_file.h>
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#include <linux/threads.h>
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#include <linux/cpumask.h>
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#include <linux/timex.h>
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#include <linux/delay.h>
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#include <linux/fs.h>
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#include <linux/proc_fs.h>
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#include <linux/sysctl.h>
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#include <linux/hardirq.h>
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#include <linux/hugetlb.h>
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#include <linux/mman.h>
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#include <asm/unaligned.h>
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#include <asm/pgtable.h>
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#include <asm/processor.h>
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#include <asm/sections.h>
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#include <asm/homecache.h>
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#include <asm/hardwall.h>
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#include <arch/chip.h>
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/*
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* Support /proc/cpuinfo
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*/
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#define cpu_to_ptr(n) ((void *)((long)(n)+1))
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#define ptr_to_cpu(p) ((long)(p) - 1)
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static int show_cpuinfo(struct seq_file *m, void *v)
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{
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int n = ptr_to_cpu(v);
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if (n == 0) {
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char buf[NR_CPUS*5];
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cpulist_scnprintf(buf, sizeof(buf), cpu_online_mask);
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seq_printf(m, "cpu count\t: %d\n", num_online_cpus());
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seq_printf(m, "cpu list\t: %s\n", buf);
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seq_printf(m, "model name\t: %s\n", chip_model);
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seq_printf(m, "flags\t\t:\n"); /* nothing for now */
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seq_printf(m, "cpu MHz\t\t: %llu.%06llu\n",
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get_clock_rate() / 1000000,
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(get_clock_rate() % 1000000));
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seq_printf(m, "bogomips\t: %lu.%02lu\n\n",
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loops_per_jiffy/(500000/HZ),
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(loops_per_jiffy/(5000/HZ)) % 100);
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}
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#ifdef CONFIG_SMP
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if (!cpu_online(n))
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return 0;
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#endif
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seq_printf(m, "processor\t: %d\n", n);
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/* Print only num_online_cpus() blank lines total. */
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if (cpumask_next(n, cpu_online_mask) < nr_cpu_ids)
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seq_printf(m, "\n");
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return 0;
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}
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static void *c_start(struct seq_file *m, loff_t *pos)
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{
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return *pos < nr_cpu_ids ? cpu_to_ptr(*pos) : NULL;
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}
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static void *c_next(struct seq_file *m, void *v, loff_t *pos)
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{
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++*pos;
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return c_start(m, pos);
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}
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static void c_stop(struct seq_file *m, void *v)
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{
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}
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const struct seq_operations cpuinfo_op = {
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.start = c_start,
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.next = c_next,
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.stop = c_stop,
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.show = show_cpuinfo,
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};
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/*
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* Support /proc/tile directory
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*/
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static int __init proc_tile_init(void)
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{
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struct proc_dir_entry *root = proc_mkdir("tile", NULL);
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if (root == NULL)
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return 0;
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proc_tile_hardwall_init(root);
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return 0;
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}
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arch_initcall(proc_tile_init);
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/*
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* Support /proc/sys/tile directory
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*/
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#ifndef __tilegx__ /* FIXME: GX: no support for unaligned access yet */
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static ctl_table unaligned_subtable[] = {
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{
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.procname = "enabled",
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.data = &unaligned_fixup,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec
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},
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{
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.procname = "printk",
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.data = &unaligned_printk,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec
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},
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{
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.procname = "count",
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.data = &unaligned_fixup_count,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec
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},
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{}
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};
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static ctl_table unaligned_table[] = {
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{
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.procname = "unaligned_fixup",
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.mode = 0555,
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.child = unaligned_subtable
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},
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{}
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};
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static struct ctl_path tile_path[] = {
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{ .procname = "tile" },
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{ }
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};
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static int __init proc_sys_tile_init(void)
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{
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register_sysctl_paths(tile_path, unaligned_table);
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return 0;
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}
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arch_initcall(proc_sys_tile_init);
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#endif
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