2 * Copyright 2010 Tilera Corporation. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation, version 2.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
11 * NON INFRINGEMENT. See the GNU General Public License for
15 #include <linux/smp.h>
16 #include <linux/seq_file.h>
17 #include <linux/threads.h>
18 #include <linux/cpumask.h>
19 #include <linux/timex.h>
20 #include <linux/delay.h>
22 #include <linux/proc_fs.h>
23 #include <linux/sysctl.h>
24 #include <linux/hardirq.h>
25 #include <linux/mman.h>
26 #include <linux/smp.h>
27 #include <asm/pgtable.h>
28 #include <asm/processor.h>
29 #include <asm/sections.h>
30 #include <asm/homecache.h>
31 #include <arch/chip.h>
35 * Support /proc/cpuinfo
38 #define cpu_to_ptr(n) ((void *)((long)(n)+1))
39 #define ptr_to_cpu(p) ((long)(p) - 1)
41 static int show_cpuinfo(struct seq_file *m, void *v)
43 int n = ptr_to_cpu(v);
47 cpulist_scnprintf(buf, sizeof(buf), cpu_online_mask);
48 seq_printf(m, "cpu count\t: %d\n", num_online_cpus());
49 seq_printf(m, "cpu list\t: %s\n", buf);
50 seq_printf(m, "model name\t: %s\n", chip_model);
51 seq_printf(m, "flags\t\t:\n"); /* nothing for now */
52 seq_printf(m, "cpu MHz\t\t: %llu.%06llu\n",
53 get_clock_rate() / 1000000,
54 (get_clock_rate() % 1000000));
55 seq_printf(m, "bogomips\t: %lu.%02lu\n\n",
56 loops_per_jiffy/(500000/HZ),
57 (loops_per_jiffy/(5000/HZ)) % 100);
65 seq_printf(m, "processor\t: %d\n", n);
67 /* Print only num_online_cpus() blank lines total. */
68 if (cpumask_next(n, cpu_online_mask) < nr_cpu_ids)
74 static void *c_start(struct seq_file *m, loff_t *pos)
76 return *pos < nr_cpu_ids ? cpu_to_ptr(*pos) : NULL;
78 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
81 return c_start(m, pos);
83 static void c_stop(struct seq_file *m, void *v)
86 const struct seq_operations cpuinfo_op = {