proc.c 3.5 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3 4 5
#include <linux/smp.h>
#include <linux/timex.h>
#include <linux/string.h>
#include <asm/semaphore.h>
#include <linux/seq_file.h>
6
#include <linux/cpufreq.h>
L
Linus Torvalds 已提交
7 8 9 10

/*
 *	Get CPU information for use by the procfs.
 */
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
static void show_cpuinfo_core(struct seq_file *m, struct cpuinfo_x86 *c,
			      unsigned int cpu)
{
#ifdef CONFIG_X86_HT
	if (c->x86_max_cores * smp_num_siblings > 1) {
		seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
		seq_printf(m, "siblings\t: %d\n",
			   cpus_weight(per_cpu(cpu_core_map, cpu)));
		seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
		seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
	}
#endif
}

static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c)
{
	/*
	 * We use exception 16 if we have hardware math and we've either seen
	 * it or the CPU claims it is internal
	 */
	int fpu_exception = c->hard_math && (ignore_fpu_irq || cpu_has_fpu);
	seq_printf(m,
		   "fdiv_bug\t: %s\n"
		   "hlt_bug\t\t: %s\n"
		   "f00f_bug\t: %s\n"
		   "coma_bug\t: %s\n"
		   "fpu\t\t: %s\n"
		   "fpu_exception\t: %s\n"
		   "cpuid level\t: %d\n"
		   "wp\t\t: %s\n",
		   c->fdiv_bug ? "yes" : "no",
		   c->hlt_works_ok ? "no" : "yes",
		   c->f00f_bug ? "yes" : "no",
		   c->coma_bug ? "yes" : "no",
		   c->hard_math ? "yes" : "no",
		   fpu_exception ? "yes" : "no",
		   c->cpuid_level,
		   c->wp_works_ok ? "yes" : "no");
}

L
Linus Torvalds 已提交
51 52 53
static int show_cpuinfo(struct seq_file *m, void *v)
{
	struct cpuinfo_x86 *c = v;
54 55
	unsigned int cpu = 0;
	int i;
L
Linus Torvalds 已提交
56 57

#ifdef CONFIG_SMP
58
	cpu = c->cpu_index;
L
Linus Torvalds 已提交
59
#endif
60 61 62 63 64 65 66 67 68 69
	seq_printf(m, "processor\t: %u\n"
		   "vendor_id\t: %s\n"
		   "cpu family\t: %d\n"
		   "model\t\t: %u\n"
		   "model name\t: %s\n",
		   cpu,
		   c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown",
		   c->x86,
		   c->x86_model,
		   c->x86_model_id[0] ? c->x86_model_id : "unknown");
L
Linus Torvalds 已提交
70 71 72 73 74 75

	if (c->x86_mask || c->cpuid_level >= 0)
		seq_printf(m, "stepping\t: %d\n", c->x86_mask);
	else
		seq_printf(m, "stepping\t: unknown\n");

76 77 78
	if (cpu_has(c, X86_FEATURE_TSC)) {
		unsigned int freq = cpufreq_quick_get(cpu);

79 80
		if (!freq)
			freq = cpu_khz;
A
Andrew Morton 已提交
81
		seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
82
			   freq / 1000, (freq % 1000));
L
Linus Torvalds 已提交
83 84 85 86 87
	}

	/* Cache size */
	if (c->x86_cache_size >= 0)
		seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size);
88 89 90 91 92 93 94

	show_cpuinfo_core(m, c, cpu);
	show_cpuinfo_misc(m, c);

	seq_printf(m, "flags\t\t:");
	for (i = 0; i < 32*NCAPINTS; i++)
		if (cpu_has(c, i) && x86_cap_flags[i] != NULL)
L
Linus Torvalds 已提交
95 96
			seq_printf(m, " %s", x86_cap_flags[i]);

97 98 99 100 101 102 103
	seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
		   c->loops_per_jiffy/(500000/HZ),
		   (c->loops_per_jiffy/(5000/HZ)) % 100);
	seq_printf(m, "clflush size\t: %u\n", c->x86_clflush_size);

	seq_printf(m, "power management:");
	for (i = 0; i < 32; i++) {
104 105 106 107 108 109 110 111 112
		if (c->x86_power & (1 << i)) {
			if (i < ARRAY_SIZE(x86_power_flags) &&
			    x86_power_flags[i])
				seq_printf(m, "%s%s",
					   x86_power_flags[i][0]?" ":"",
					   x86_power_flags[i]);
			else
				seq_printf(m, " [%d]", i);
		}
113
	}
114

115
	seq_printf(m, "\n\n");
116

L
Linus Torvalds 已提交
117 118 119 120 121
	return 0;
}

static void *c_start(struct seq_file *m, loff_t *pos)
{
122
	if (*pos == 0)	/* just in case, cpu 0 is not the first */
123 124
		*pos = first_cpu(cpu_online_map);
	if ((*pos) < NR_CPUS && cpu_online(*pos))
125 126
		return &cpu_data(*pos);
	return NULL;
L
Linus Torvalds 已提交
127
}
128

L
Linus Torvalds 已提交
129 130
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
{
131
	*pos = next_cpu(*pos, cpu_online_map);
L
Linus Torvalds 已提交
132 133
	return c_start(m, pos);
}
134

L
Linus Torvalds 已提交
135 136 137
static void c_stop(struct seq_file *m, void *v)
{
}
138

139
const struct seq_operations cpuinfo_op = {
L
Linus Torvalds 已提交
140 141 142 143 144
	.start	= c_start,
	.next	= c_next,
	.stop	= c_stop,
	.show	= show_cpuinfo,
};