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1da177e4 LT |
1 | #include <linux/smp.h> |
2 | #include <linux/timex.h> | |
3 | #include <linux/string.h> | |
4 | #include <asm/semaphore.h> | |
5 | #include <linux/seq_file.h> | |
95235ca2 | 6 | #include <linux/cpufreq.h> |
1da177e4 LT |
7 | |
8 | /* | |
9 | * Get CPU information for use by the procfs. | |
10 | */ | |
11 | static int show_cpuinfo(struct seq_file *m, void *v) | |
12 | { | |
1da177e4 | 13 | struct cpuinfo_x86 *c = v; |
92cb7612 | 14 | int i, n = 0; |
1da177e4 LT |
15 | int fpu_exception; |
16 | ||
17 | #ifdef CONFIG_SMP | |
92cb7612 | 18 | n = c->cpu_index; |
1da177e4 LT |
19 | #endif |
20 | seq_printf(m, "processor\t: %d\n" | |
21 | "vendor_id\t: %s\n" | |
22 | "cpu family\t: %d\n" | |
23 | "model\t\t: %d\n" | |
24 | "model name\t: %s\n", | |
25 | n, | |
26 | c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown", | |
27 | c->x86, | |
28 | c->x86_model, | |
29 | c->x86_model_id[0] ? c->x86_model_id : "unknown"); | |
30 | ||
31 | if (c->x86_mask || c->cpuid_level >= 0) | |
32 | seq_printf(m, "stepping\t: %d\n", c->x86_mask); | |
33 | else | |
34 | seq_printf(m, "stepping\t: unknown\n"); | |
35 | ||
36 | if ( cpu_has(c, X86_FEATURE_TSC) ) { | |
95235ca2 VP |
37 | unsigned int freq = cpufreq_quick_get(n); |
38 | if (!freq) | |
39 | freq = cpu_khz; | |
a3a255e7 | 40 | seq_printf(m, "cpu MHz\t\t: %u.%03u\n", |
95235ca2 | 41 | freq / 1000, (freq % 1000)); |
1da177e4 LT |
42 | } |
43 | ||
44 | /* Cache size */ | |
45 | if (c->x86_cache_size >= 0) | |
46 | seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size); | |
47 | #ifdef CONFIG_X86_HT | |
94605eff | 48 | if (c->x86_max_cores * smp_num_siblings > 1) { |
4b89aff9 | 49 | seq_printf(m, "physical id\t: %d\n", c->phys_proc_id); |
08357611 MT |
50 | seq_printf(m, "siblings\t: %d\n", |
51 | cpus_weight(per_cpu(cpu_core_map, n))); | |
4b89aff9 | 52 | seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id); |
94605eff | 53 | seq_printf(m, "cpu cores\t: %d\n", c->booted_cores); |
db468681 | 54 | } |
1da177e4 LT |
55 | #endif |
56 | ||
57 | /* We use exception 16 if we have hardware math and we've either seen it or the CPU claims it is internal */ | |
58 | fpu_exception = c->hard_math && (ignore_fpu_irq || cpu_has_fpu); | |
59 | seq_printf(m, "fdiv_bug\t: %s\n" | |
60 | "hlt_bug\t\t: %s\n" | |
61 | "f00f_bug\t: %s\n" | |
62 | "coma_bug\t: %s\n" | |
63 | "fpu\t\t: %s\n" | |
64 | "fpu_exception\t: %s\n" | |
65 | "cpuid level\t: %d\n" | |
66 | "wp\t\t: %s\n" | |
67 | "flags\t\t:", | |
68 | c->fdiv_bug ? "yes" : "no", | |
69 | c->hlt_works_ok ? "no" : "yes", | |
70 | c->f00f_bug ? "yes" : "no", | |
71 | c->coma_bug ? "yes" : "no", | |
72 | c->hard_math ? "yes" : "no", | |
73 | fpu_exception ? "yes" : "no", | |
74 | c->cpuid_level, | |
75 | c->wp_works_ok ? "yes" : "no"); | |
76 | ||
77 | for ( i = 0 ; i < 32*NCAPINTS ; i++ ) | |
78 | if ( test_bit(i, c->x86_capability) && | |
79 | x86_cap_flags[i] != NULL ) | |
80 | seq_printf(m, " %s", x86_cap_flags[i]); | |
81 | ||
3f98bc49 AK |
82 | for (i = 0; i < 32; i++) |
83 | if (c->x86_power & (1 << i)) { | |
84 | if (i < ARRAY_SIZE(x86_power_flags) && | |
85 | x86_power_flags[i]) | |
86 | seq_printf(m, "%s%s", | |
87 | x86_power_flags[i][0]?" ":"", | |
88 | x86_power_flags[i]); | |
89 | else | |
90 | seq_printf(m, " [%d]", i); | |
91 | } | |
92 | ||
770d132f | 93 | seq_printf(m, "\nbogomips\t: %lu.%02lu\n", |
1da177e4 LT |
94 | c->loops_per_jiffy/(500000/HZ), |
95 | (c->loops_per_jiffy/(5000/HZ)) % 100); | |
770d132f | 96 | seq_printf(m, "clflush size\t: %u\n\n", c->x86_clflush_size); |
3dd9d514 | 97 | |
1da177e4 LT |
98 | return 0; |
99 | } | |
100 | ||
101 | static void *c_start(struct seq_file *m, loff_t *pos) | |
102 | { | |
92cb7612 | 103 | if (*pos == 0) /* just in case, cpu 0 is not the first */ |
c0c52d28 AH |
104 | *pos = first_cpu(cpu_online_map); |
105 | if ((*pos) < NR_CPUS && cpu_online(*pos)) | |
92cb7612 MT |
106 | return &cpu_data(*pos); |
107 | return NULL; | |
1da177e4 LT |
108 | } |
109 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) | |
110 | { | |
c0c52d28 | 111 | *pos = next_cpu(*pos, cpu_online_map); |
1da177e4 LT |
112 | return c_start(m, pos); |
113 | } | |
114 | static void c_stop(struct seq_file *m, void *v) | |
115 | { | |
116 | } | |
8a45eb31 | 117 | const struct seq_operations cpuinfo_op = { |
1da177e4 LT |
118 | .start = c_start, |
119 | .next = c_next, | |
120 | .stop = c_stop, | |
121 | .show = show_cpuinfo, | |
122 | }; |