Merge branch 'x86/nuke386' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
[sfrench/cifs-2.6.git] / arch / x86 / kernel / cpu / proc.c
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  *      Get CPU information for use by the procfs.
9  */
10 static void show_cpuinfo_core(struct seq_file *m, struct cpuinfo_x86 *c,
11                               unsigned int cpu)
12 {
13 #ifdef CONFIG_SMP
14         if (c->x86_max_cores * smp_num_siblings > 1) {
15                 seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
16                 seq_printf(m, "siblings\t: %d\n",
17                            cpumask_weight(cpu_core_mask(cpu)));
18                 seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
19                 seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
20                 seq_printf(m, "apicid\t\t: %d\n", c->apicid);
21                 seq_printf(m, "initial apicid\t: %d\n", c->initial_apicid);
22         }
23 #endif
24 }
25
26 #ifdef CONFIG_X86_32
27 static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c)
28 {
29         seq_printf(m,
30                    "fdiv_bug\t: %s\n"
31                    "hlt_bug\t\t: %s\n"
32                    "f00f_bug\t: %s\n"
33                    "coma_bug\t: %s\n"
34                    "fpu\t\t: %s\n"
35                    "fpu_exception\t: %s\n"
36                    "cpuid level\t: %d\n"
37                    "wp\t\t: %s\n",
38                    c->fdiv_bug ? "yes" : "no",
39                    c->hlt_works_ok ? "no" : "yes",
40                    c->f00f_bug ? "yes" : "no",
41                    c->coma_bug ? "yes" : "no",
42                    c->hard_math ? "yes" : "no",
43                    c->hard_math ? "yes" : "no",
44                    c->cpuid_level,
45                    c->wp_works_ok ? "yes" : "no");
46 }
47 #else
48 static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c)
49 {
50         seq_printf(m,
51                    "fpu\t\t: yes\n"
52                    "fpu_exception\t: yes\n"
53                    "cpuid level\t: %d\n"
54                    "wp\t\t: yes\n",
55                    c->cpuid_level);
56 }
57 #endif
58
59 static int show_cpuinfo(struct seq_file *m, void *v)
60 {
61         struct cpuinfo_x86 *c = v;
62         unsigned int cpu;
63         int i;
64
65         cpu = c->cpu_index;
66         seq_printf(m, "processor\t: %u\n"
67                    "vendor_id\t: %s\n"
68                    "cpu family\t: %d\n"
69                    "model\t\t: %u\n"
70                    "model name\t: %s\n",
71                    cpu,
72                    c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown",
73                    c->x86,
74                    c->x86_model,
75                    c->x86_model_id[0] ? c->x86_model_id : "unknown");
76
77         if (c->x86_mask || c->cpuid_level >= 0)
78                 seq_printf(m, "stepping\t: %d\n", c->x86_mask);
79         else
80                 seq_printf(m, "stepping\t: unknown\n");
81         if (c->microcode)
82                 seq_printf(m, "microcode\t: 0x%x\n", c->microcode);
83
84         if (cpu_has(c, X86_FEATURE_TSC)) {
85                 unsigned int freq = cpufreq_quick_get(cpu);
86
87                 if (!freq)
88                         freq = cpu_khz;
89                 seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
90                            freq / 1000, (freq % 1000));
91         }
92
93         /* Cache size */
94         if (c->x86_cache_size >= 0)
95                 seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size);
96
97         show_cpuinfo_core(m, c, cpu);
98         show_cpuinfo_misc(m, c);
99
100         seq_printf(m, "flags\t\t:");
101         for (i = 0; i < 32*NCAPINTS; i++)
102                 if (cpu_has(c, i) && x86_cap_flags[i] != NULL)
103                         seq_printf(m, " %s", x86_cap_flags[i]);
104
105         seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
106                    c->loops_per_jiffy/(500000/HZ),
107                    (c->loops_per_jiffy/(5000/HZ)) % 100);
108
109 #ifdef CONFIG_X86_64
110         if (c->x86_tlbsize > 0)
111                 seq_printf(m, "TLB size\t: %d 4K pages\n", c->x86_tlbsize);
112 #endif
113         seq_printf(m, "clflush size\t: %u\n", c->x86_clflush_size);
114         seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment);
115         seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n",
116                    c->x86_phys_bits, c->x86_virt_bits);
117
118         seq_printf(m, "power management:");
119         for (i = 0; i < 32; i++) {
120                 if (c->x86_power & (1 << i)) {
121                         if (i < ARRAY_SIZE(x86_power_flags) &&
122                             x86_power_flags[i])
123                                 seq_printf(m, "%s%s",
124                                            x86_power_flags[i][0] ? " " : "",
125                                            x86_power_flags[i]);
126                         else
127                                 seq_printf(m, " [%d]", i);
128                 }
129         }
130
131         seq_printf(m, "\n\n");
132
133         return 0;
134 }
135
136 static void *c_start(struct seq_file *m, loff_t *pos)
137 {
138         *pos = cpumask_next(*pos - 1, cpu_online_mask);
139         if ((*pos) < nr_cpu_ids)
140                 return &cpu_data(*pos);
141         return NULL;
142 }
143
144 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
145 {
146         (*pos)++;
147         return c_start(m, pos);
148 }
149
150 static void c_stop(struct seq_file *m, void *v)
151 {
152 }
153
154 const struct seq_operations cpuinfo_op = {
155         .start  = c_start,
156         .next   = c_next,
157         .stop   = c_stop,
158         .show   = show_cpuinfo,
159 };