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 "f00f_bug\t: %s\n" 32 "coma_bug\t: %s\n" 33 "fpu\t\t: %s\n" 34 "fpu_exception\t: %s\n" 35 "cpuid level\t: %d\n" 36 "wp\t\t: %s\n", 37 c->fdiv_bug ? "yes" : "no", 38 c->f00f_bug ? "yes" : "no", 39 c->coma_bug ? "yes" : "no", 40 c->hard_math ? "yes" : "no", 41 c->hard_math ? "yes" : "no", 42 c->cpuid_level, 43 c->wp_works_ok ? "yes" : "no"); 44 } 45 #else 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 56 57 static int show_cpuinfo(struct seq_file *m, void *v) 58 { 59 struct cpuinfo_x86 *c = v; 60 unsigned int cpu; 61 int i; 62 63 cpu = c->cpu_index; 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"); 74 75 if (c->x86_mask || c->cpuid_level >= 0) 76 seq_printf(m, "stepping\t: %d\n", c->x86_mask); 77 else 78 seq_printf(m, "stepping\t: unknown\n"); 79 if (c->microcode) 80 seq_printf(m, "microcode\t: 0x%x\n", c->microcode); 81 82 if (cpu_has(c, X86_FEATURE_TSC)) { 83 unsigned int freq = cpufreq_quick_get(cpu); 84 85 if (!freq) 86 freq = cpu_khz; 87 seq_printf(m, "cpu MHz\t\t: %u.%03u\n", 88 freq / 1000, (freq % 1000)); 89 } 90 91 /* Cache size */ 92 if (c->x86_cache_size >= 0) 93 seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size); 94 95 show_cpuinfo_core(m, c, cpu); 96 show_cpuinfo_misc(m, c); 97 98 seq_printf(m, "flags\t\t:"); 99 for (i = 0; i < 32*NCAPINTS; i++) 100 if (cpu_has(c, i) && x86_cap_flags[i] != NULL) 101 seq_printf(m, " %s", x86_cap_flags[i]); 102 103 seq_printf(m, "\nbogomips\t: %lu.%02lu\n", 104 c->loops_per_jiffy/(500000/HZ), 105 (c->loops_per_jiffy/(5000/HZ)) % 100); 106 107 #ifdef CONFIG_X86_64 108 if (c->x86_tlbsize > 0) 109 seq_printf(m, "TLB size\t: %d 4K pages\n", c->x86_tlbsize); 110 #endif 111 seq_printf(m, "clflush size\t: %u\n", c->x86_clflush_size); 112 seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment); 113 seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n", 114 c->x86_phys_bits, c->x86_virt_bits); 115 116 seq_printf(m, "power management:"); 117 for (i = 0; i < 32; i++) { 118 if (c->x86_power & (1 << i)) { 119 if (i < ARRAY_SIZE(x86_power_flags) && 120 x86_power_flags[i]) 121 seq_printf(m, "%s%s", 122 x86_power_flags[i][0] ? " " : "", 123 x86_power_flags[i]); 124 else 125 seq_printf(m, " [%d]", i); 126 } 127 } 128 129 seq_printf(m, "\n\n"); 130 131 return 0; 132 } 133 134 static void *c_start(struct seq_file *m, loff_t *pos) 135 { 136 *pos = cpumask_next(*pos - 1, cpu_online_mask); 137 if ((*pos) < nr_cpu_ids) 138 return &cpu_data(*pos); 139 return NULL; 140 } 141 142 static void *c_next(struct seq_file *m, void *v, loff_t *pos) 143 { 144 (*pos)++; 145 return c_start(m, pos); 146 } 147 148 static void c_stop(struct seq_file *m, void *v) 149 { 150 } 151 152 const struct seq_operations cpuinfo_op = { 153 .start = c_start, 154 .next = c_next, 155 .stop = c_stop, 156 .show = show_cpuinfo, 157 }; 158