Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | #include <linux/smp.h> |
3 | #include <linux/timex.h> | |
4 | #include <linux/string.h> | |
1da177e4 | 5 | #include <linux/seq_file.h> |
890da9cf | 6 | #include <linux/cpufreq.h> |
1da177e4 | 7 | |
7d5905dc RW |
8 | #include "cpu.h" |
9 | ||
1da177e4 LT |
10 | /* |
11 | * Get CPU information for use by the procfs. | |
12 | */ | |
a967ceac HS |
13 | static void show_cpuinfo_core(struct seq_file *m, struct cpuinfo_x86 *c, |
14 | unsigned int cpu) | |
15 | { | |
327f4387 | 16 | #ifdef CONFIG_SMP |
a477c859 | 17 | seq_printf(m, "physical id\t: %d\n", c->phys_proc_id); |
7d79a7bd BG |
18 | seq_printf(m, "siblings\t: %d\n", |
19 | cpumask_weight(topology_core_cpumask(cpu))); | |
a477c859 HD |
20 | seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id); |
21 | seq_printf(m, "cpu cores\t: %d\n", c->booted_cores); | |
22 | seq_printf(m, "apicid\t\t: %d\n", c->apicid); | |
23 | seq_printf(m, "initial apicid\t: %d\n", c->initial_apicid); | |
a967ceac HS |
24 | #endif |
25 | } | |
26 | ||
327f4387 | 27 | #ifdef CONFIG_X86_32 |
a967ceac HS |
28 | static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c) |
29 | { | |
a967ceac HS |
30 | seq_printf(m, |
31 | "fdiv_bug\t: %s\n" | |
a967ceac HS |
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" | |
6415813b | 37 | "wp\t\t: yes\n", |
93a829e8 | 38 | static_cpu_has_bug(X86_BUG_FDIV) ? "yes" : "no", |
e2604b49 | 39 | static_cpu_has_bug(X86_BUG_F00F) ? "yes" : "no", |
c5b41a67 | 40 | static_cpu_has_bug(X86_BUG_COMA) ? "yes" : "no", |
60e019eb PA |
41 | static_cpu_has(X86_FEATURE_FPU) ? "yes" : "no", |
42 | static_cpu_has(X86_FEATURE_FPU) ? "yes" : "no", | |
6415813b | 43 | c->cpuid_level); |
a967ceac | 44 | } |
2aef7720 | 45 | #else |
2aef7720 HS |
46 | static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c) |
47 | { | |
48 | seq_printf(m, | |
49 | "fpu\t\t: yes\n" | |
50 | "fpu_exception\t: yes\n" | |
51 | "cpuid level\t: %d\n" | |
52 | "wp\t\t: yes\n", | |
53 | c->cpuid_level); | |
54 | } | |
55 | #endif | |
a967ceac | 56 | |
1da177e4 LT |
57 | static int show_cpuinfo(struct seq_file *m, void *v) |
58 | { | |
1da177e4 | 59 | struct cpuinfo_x86 *c = v; |
141168c3 | 60 | unsigned int cpu; |
a967ceac | 61 | int i; |
1da177e4 | 62 | |
a967ceac | 63 | cpu = c->cpu_index; |
a967ceac HS |
64 | seq_printf(m, "processor\t: %u\n" |
65 | "vendor_id\t: %s\n" | |
66 | "cpu family\t: %d\n" | |
67 | "model\t\t: %u\n" | |
68 | "model name\t: %s\n", | |
69 | cpu, | |
70 | c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown", | |
71 | c->x86, | |
72 | c->x86_model, | |
73 | c->x86_model_id[0] ? c->x86_model_id : "unknown"); | |
1da177e4 | 74 | |
b399151c JZ |
75 | if (c->x86_stepping || c->cpuid_level >= 0) |
76 | seq_printf(m, "stepping\t: %d\n", c->x86_stepping); | |
1da177e4 | 77 | else |
3736708f | 78 | seq_puts(m, "stepping\t: unknown\n"); |
506ed6b5 | 79 | if (c->microcode) |
881e23e5 | 80 | seq_printf(m, "microcode\t: 0x%x\n", c->microcode); |
1da177e4 | 81 | |
890da9cf | 82 | if (cpu_has(c, X86_FEATURE_TSC)) { |
7d5905dc | 83 | unsigned int freq = aperfmperf_get_khz(cpu); |
890da9cf | 84 | |
7d5905dc RW |
85 | if (!freq) |
86 | freq = cpufreq_quick_get(cpu); | |
890da9cf LT |
87 | if (!freq) |
88 | freq = cpu_khz; | |
a3a255e7 | 89 | seq_printf(m, "cpu MHz\t\t: %u.%03u\n", |
890da9cf LT |
90 | freq / 1000, (freq % 1000)); |
91 | } | |
1da177e4 LT |
92 | |
93 | /* Cache size */ | |
24dbc600 GS |
94 | if (c->x86_cache_size) |
95 | seq_printf(m, "cache size\t: %u KB\n", c->x86_cache_size); | |
a967ceac HS |
96 | |
97 | show_cpuinfo_core(m, c, cpu); | |
98 | show_cpuinfo_misc(m, c); | |
99 | ||
3736708f | 100 | seq_puts(m, "flags\t\t:"); |
a967ceac HS |
101 | for (i = 0; i < 32*NCAPINTS; i++) |
102 | if (cpu_has(c, i) && x86_cap_flags[i] != NULL) | |
1da177e4 LT |
103 | seq_printf(m, " %s", x86_cap_flags[i]); |
104 | ||
3736708f | 105 | seq_puts(m, "\nbugs\t\t:"); |
80a208bd BP |
106 | for (i = 0; i < 32*NBUGINTS; i++) { |
107 | unsigned int bug_bit = 32*NCAPINTS + i; | |
108 | ||
109 | if (cpu_has_bug(c, bug_bit) && x86_bug_flags[i]) | |
110 | seq_printf(m, " %s", x86_bug_flags[i]); | |
111 | } | |
112 | ||
f84c3a42 HS |
113 | seq_printf(m, "\nbogomips\t: %lu.%02lu\n", |
114 | c->loops_per_jiffy/(500000/HZ), | |
115 | (c->loops_per_jiffy/(5000/HZ)) % 100); | |
2aef7720 HS |
116 | |
117 | #ifdef CONFIG_X86_64 | |
118 | if (c->x86_tlbsize > 0) | |
119 | seq_printf(m, "TLB size\t: %d 4K pages\n", c->x86_tlbsize); | |
120 | #endif | |
f84c3a42 | 121 | seq_printf(m, "clflush size\t: %u\n", c->x86_clflush_size); |
2aef7720 HS |
122 | seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment); |
123 | seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n", | |
124 | c->x86_phys_bits, c->x86_virt_bits); | |
f84c3a42 | 125 | |
3736708f | 126 | seq_puts(m, "power management:"); |
f84c3a42 | 127 | for (i = 0; i < 32; i++) { |
3f98bc49 AK |
128 | if (c->x86_power & (1 << i)) { |
129 | if (i < ARRAY_SIZE(x86_power_flags) && | |
130 | x86_power_flags[i]) | |
131 | seq_printf(m, "%s%s", | |
8bdbd962 | 132 | x86_power_flags[i][0] ? " " : "", |
3f98bc49 AK |
133 | x86_power_flags[i]); |
134 | else | |
135 | seq_printf(m, " [%d]", i); | |
136 | } | |
f84c3a42 | 137 | } |
3f98bc49 | 138 | |
3736708f | 139 | seq_puts(m, "\n\n"); |
3dd9d514 | 140 | |
1da177e4 LT |
141 | return 0; |
142 | } | |
143 | ||
144 | static void *c_start(struct seq_file *m, loff_t *pos) | |
145 | { | |
dec08a83 | 146 | *pos = cpumask_next(*pos - 1, cpu_online_mask); |
bc8bcc79 | 147 | if ((*pos) < nr_cpu_ids) |
92cb7612 MT |
148 | return &cpu_data(*pos); |
149 | return NULL; | |
1da177e4 | 150 | } |
a967ceac | 151 | |
1da177e4 LT |
152 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) |
153 | { | |
bc8bcc79 | 154 | (*pos)++; |
1da177e4 LT |
155 | return c_start(m, pos); |
156 | } | |
a967ceac | 157 | |
1da177e4 LT |
158 | static void c_stop(struct seq_file *m, void *v) |
159 | { | |
160 | } | |
a967ceac | 161 | |
8a45eb31 | 162 | const struct seq_operations cpuinfo_op = { |
1da177e4 LT |
163 | .start = c_start, |
164 | .next = c_next, | |
165 | .stop = c_stop, | |
166 | .show = show_cpuinfo, | |
167 | }; |