| 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 | 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 |
| 25 | static 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 |
| 44 | static 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 | |
| 55 | static 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 | /* Cache size */ |
| 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 | |
| 140 | static 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 | |
| 148 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) |
| 149 | { |
| 150 | (*pos)++; |
| 151 | return c_start(m, pos); |
| 152 | } |
| 153 | |
| 154 | static void c_stop(struct seq_file *m, void *v) |
| 155 | { |
| 156 | } |
| 157 | |
| 158 | const struct seq_operations cpuinfo_op = { |
| 159 | .start = c_start, |
| 160 | .next = c_next, |
| 161 | .stop = c_stop, |
| 162 | .show = show_cpuinfo, |
| 163 | }; |