1#include <linux/smp.h>
2#include <linux/timex.h>
3#include <linux/string.h>
4#include <linux/seq_file.h>
5#include <linux/cpufreq.h>
6
7
8
9
10static void show_cpuinfo_core(struct seq_file *m, struct cpuinfo_x86 *c,
11 unsigned int cpu)
12{
13#ifdef CONFIG_SMP
14 seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
15 seq_printf(m, "siblings\t: %d\n",
16 cpumask_weight(topology_core_cpumask(cpu)));
17 seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
18 seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
19 seq_printf(m, "apicid\t\t: %d\n", c->apicid);
20 seq_printf(m, "initial apicid\t: %d\n", c->initial_apicid);
21#endif
22}
23
24#ifdef CONFIG_X86_32
25static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c)
26{
27 seq_printf(m,
28 "fdiv_bug\t: %s\n"
29 "f00f_bug\t: %s\n"
30 "coma_bug\t: %s\n"
31 "fpu\t\t: %s\n"
32 "fpu_exception\t: %s\n"
33 "cpuid level\t: %d\n"
34 "wp\t\t: %s\n",
35 static_cpu_has_bug(X86_BUG_FDIV) ? "yes" : "no",
36 static_cpu_has_bug(X86_BUG_F00F) ? "yes" : "no",
37 static_cpu_has_bug(X86_BUG_COMA) ? "yes" : "no",
38 static_cpu_has(X86_FEATURE_FPU) ? "yes" : "no",
39 static_cpu_has(X86_FEATURE_FPU) ? "yes" : "no",
40 c->cpuid_level,
41 c->wp_works_ok ? "yes" : "no");
42}
43#else
44static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c)
45{
46 seq_printf(m,
47 "fpu\t\t: yes\n"
48 "fpu_exception\t: yes\n"
49 "cpuid level\t: %d\n"
50 "wp\t\t: yes\n",
51 c->cpuid_level);
52}
53#endif
54
55static int show_cpuinfo(struct seq_file *m, void *v)
56{
57 struct cpuinfo_x86 *c = v;
58 unsigned int cpu;
59 int i;
60
61 cpu = c->cpu_index;
62 seq_printf(m, "processor\t: %u\n"
63 "vendor_id\t: %s\n"
64 "cpu family\t: %d\n"
65 "model\t\t: %u\n"
66 "model name\t: %s\n",
67 cpu,
68 c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown",
69 c->x86,
70 c->x86_model,
71 c->x86_model_id[0] ? c->x86_model_id : "unknown");
72
73 if (c->x86_mask || c->cpuid_level >= 0)
74 seq_printf(m, "stepping\t: %d\n", c->x86_mask);
75 else
76 seq_puts(m, "stepping\t: unknown\n");
77 if (c->microcode)
78 seq_printf(m, "microcode\t: 0x%x\n", c->microcode);
79
80 if (cpu_has(c, X86_FEATURE_TSC)) {
81 unsigned int freq = cpufreq_quick_get(cpu);
82
83 if (!freq)
84 freq = cpu_khz;
85 seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
86 freq / 1000, (freq % 1000));
87 }
88
89
90 if (c->x86_cache_size >= 0)
91 seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size);
92
93 show_cpuinfo_core(m, c, cpu);
94 show_cpuinfo_misc(m, c);
95
96 seq_puts(m, "flags\t\t:");
97 for (i = 0; i < 32*NCAPINTS; i++)
98 if (cpu_has(c, i) && x86_cap_flags[i] != NULL)
99 seq_printf(m, " %s", x86_cap_flags[i]);
100
101 seq_puts(m, "\nbugs\t\t:");
102 for (i = 0; i < 32*NBUGINTS; i++) {
103 unsigned int bug_bit = 32*NCAPINTS + i;
104
105 if (cpu_has_bug(c, bug_bit) && x86_bug_flags[i])
106 seq_printf(m, " %s", x86_bug_flags[i]);
107 }
108
109 seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
110 c->loops_per_jiffy/(500000/HZ),
111 (c->loops_per_jiffy/(5000/HZ)) % 100);
112
113#ifdef CONFIG_X86_64
114 if (c->x86_tlbsize > 0)
115 seq_printf(m, "TLB size\t: %d 4K pages\n", c->x86_tlbsize);
116#endif
117 seq_printf(m, "clflush size\t: %u\n", c->x86_clflush_size);
118 seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment);
119 seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n",
120 c->x86_phys_bits, c->x86_virt_bits);
121
122 seq_puts(m, "power management:");
123 for (i = 0; i < 32; i++) {
124 if (c->x86_power & (1 << i)) {
125 if (i < ARRAY_SIZE(x86_power_flags) &&
126 x86_power_flags[i])
127 seq_printf(m, "%s%s",
128 x86_power_flags[i][0] ? " " : "",
129 x86_power_flags[i]);
130 else
131 seq_printf(m, " [%d]", i);
132 }
133 }
134
135 seq_puts(m, "\n\n");
136
137 return 0;
138}
139
140static void *c_start(struct seq_file *m, loff_t *pos)
141{
142 *pos = cpumask_next(*pos - 1, cpu_online_mask);
143 if ((*pos) < nr_cpu_ids)
144 return &cpu_data(*pos);
145 return NULL;
146}
147
148static void *c_next(struct seq_file *m, void *v, loff_t *pos)
149{
150 (*pos)++;
151 return c_start(m, pos);
152}
153
154static void c_stop(struct seq_file *m, void *v)
155{
156}
157
158const struct seq_operations cpuinfo_op = {
159 .start = c_start,
160 .next = c_next,
161 .stop = c_stop,
162 .show = show_cpuinfo,
163};
164
