Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include <linux/smp.h> |
| 2 | #include <linux/timex.h> |
| 3 | #include <linux/string.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | #include <linux/seq_file.h> |
Venkatesh Pallipadi | 95235ca | 2005-12-02 10:43:20 -0800 | [diff] [blame] | 5 | #include <linux/cpufreq.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | |
| 7 | /* |
| 8 | * Get CPU information for use by the procfs. |
| 9 | */ |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 10 | static void show_cpuinfo_core(struct seq_file *m, struct cpuinfo_x86 *c, |
| 11 | unsigned int cpu) |
| 12 | { |
Jaswinder Singh Rajput | 327f438 | 2009-02-28 18:50:21 +0530 | [diff] [blame] | 13 | #ifdef CONFIG_SMP |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 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", |
Andreas Herrmann | 35d1168 | 2009-05-04 20:28:59 +0200 | [diff] [blame] | 17 | cpumask_weight(cpu_core_mask(cpu))); |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 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); |
Yinghai Lu | 01aaea1 | 2008-03-06 13:46:39 -0800 | [diff] [blame] | 20 | seq_printf(m, "apicid\t\t: %d\n", c->apicid); |
| 21 | seq_printf(m, "initial apicid\t: %d\n", c->initial_apicid); |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 22 | } |
| 23 | #endif |
| 24 | } |
| 25 | |
Jaswinder Singh Rajput | 327f438 | 2009-02-28 18:50:21 +0530 | [diff] [blame] | 26 | #ifdef CONFIG_X86_32 |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 27 | static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c) |
| 28 | { |
| 29 | /* |
| 30 | * We use exception 16 if we have hardware math and we've either seen |
| 31 | * it or the CPU claims it is internal |
| 32 | */ |
| 33 | int fpu_exception = c->hard_math && (ignore_fpu_irq || cpu_has_fpu); |
| 34 | seq_printf(m, |
| 35 | "fdiv_bug\t: %s\n" |
| 36 | "hlt_bug\t\t: %s\n" |
| 37 | "f00f_bug\t: %s\n" |
| 38 | "coma_bug\t: %s\n" |
| 39 | "fpu\t\t: %s\n" |
| 40 | "fpu_exception\t: %s\n" |
| 41 | "cpuid level\t: %d\n" |
| 42 | "wp\t\t: %s\n", |
| 43 | c->fdiv_bug ? "yes" : "no", |
| 44 | c->hlt_works_ok ? "no" : "yes", |
| 45 | c->f00f_bug ? "yes" : "no", |
| 46 | c->coma_bug ? "yes" : "no", |
| 47 | c->hard_math ? "yes" : "no", |
| 48 | fpu_exception ? "yes" : "no", |
| 49 | c->cpuid_level, |
| 50 | c->wp_works_ok ? "yes" : "no"); |
| 51 | } |
Hiroshi Shimamoto | 2aef772 | 2008-02-20 10:48:02 -0800 | [diff] [blame] | 52 | #else |
Hiroshi Shimamoto | 2aef772 | 2008-02-20 10:48:02 -0800 | [diff] [blame] | 53 | static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c) |
| 54 | { |
| 55 | seq_printf(m, |
| 56 | "fpu\t\t: yes\n" |
| 57 | "fpu_exception\t: yes\n" |
| 58 | "cpuid level\t: %d\n" |
| 59 | "wp\t\t: yes\n", |
| 60 | c->cpuid_level); |
| 61 | } |
| 62 | #endif |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 63 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | static int show_cpuinfo(struct seq_file *m, void *v) |
| 65 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | struct cpuinfo_x86 *c = v; |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 67 | unsigned int cpu = 0; |
| 68 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | |
| 70 | #ifdef CONFIG_SMP |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 71 | cpu = c->cpu_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | #endif |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 73 | seq_printf(m, "processor\t: %u\n" |
| 74 | "vendor_id\t: %s\n" |
| 75 | "cpu family\t: %d\n" |
| 76 | "model\t\t: %u\n" |
| 77 | "model name\t: %s\n", |
| 78 | cpu, |
| 79 | c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown", |
| 80 | c->x86, |
| 81 | c->x86_model, |
| 82 | c->x86_model_id[0] ? c->x86_model_id : "unknown"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | |
| 84 | if (c->x86_mask || c->cpuid_level >= 0) |
| 85 | seq_printf(m, "stepping\t: %d\n", c->x86_mask); |
| 86 | else |
| 87 | seq_printf(m, "stepping\t: unknown\n"); |
| 88 | |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 89 | if (cpu_has(c, X86_FEATURE_TSC)) { |
| 90 | unsigned int freq = cpufreq_quick_get(cpu); |
| 91 | |
Venkatesh Pallipadi | 95235ca | 2005-12-02 10:43:20 -0800 | [diff] [blame] | 92 | if (!freq) |
| 93 | freq = cpu_khz; |
Andrew Morton | a3a255e | 2005-06-23 00:08:34 -0700 | [diff] [blame] | 94 | seq_printf(m, "cpu MHz\t\t: %u.%03u\n", |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 95 | freq / 1000, (freq % 1000)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | } |
| 97 | |
| 98 | /* Cache size */ |
| 99 | if (c->x86_cache_size >= 0) |
| 100 | seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 102 | show_cpuinfo_core(m, c, cpu); |
| 103 | show_cpuinfo_misc(m, c); |
| 104 | |
| 105 | seq_printf(m, "flags\t\t:"); |
| 106 | for (i = 0; i < 32*NCAPINTS; i++) |
| 107 | if (cpu_has(c, i) && x86_cap_flags[i] != NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | seq_printf(m, " %s", x86_cap_flags[i]); |
| 109 | |
Hiroshi Shimamoto | f84c3a4 | 2008-02-20 10:47:12 -0800 | [diff] [blame] | 110 | seq_printf(m, "\nbogomips\t: %lu.%02lu\n", |
| 111 | c->loops_per_jiffy/(500000/HZ), |
| 112 | (c->loops_per_jiffy/(5000/HZ)) % 100); |
Hiroshi Shimamoto | 2aef772 | 2008-02-20 10:48:02 -0800 | [diff] [blame] | 113 | |
| 114 | #ifdef CONFIG_X86_64 |
| 115 | if (c->x86_tlbsize > 0) |
| 116 | seq_printf(m, "TLB size\t: %d 4K pages\n", c->x86_tlbsize); |
| 117 | #endif |
Hiroshi Shimamoto | f84c3a4 | 2008-02-20 10:47:12 -0800 | [diff] [blame] | 118 | seq_printf(m, "clflush size\t: %u\n", c->x86_clflush_size); |
Hiroshi Shimamoto | 2aef772 | 2008-02-20 10:48:02 -0800 | [diff] [blame] | 119 | seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment); |
| 120 | seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n", |
| 121 | c->x86_phys_bits, c->x86_virt_bits); |
Hiroshi Shimamoto | f84c3a4 | 2008-02-20 10:47:12 -0800 | [diff] [blame] | 122 | |
| 123 | seq_printf(m, "power management:"); |
| 124 | for (i = 0; i < 32; i++) { |
Andi Kleen | 3f98bc4 | 2006-01-11 22:42:51 +0100 | [diff] [blame] | 125 | if (c->x86_power & (1 << i)) { |
| 126 | if (i < ARRAY_SIZE(x86_power_flags) && |
| 127 | x86_power_flags[i]) |
| 128 | seq_printf(m, "%s%s", |
Alan Cox | 8bdbd96 | 2009-07-04 00:35:45 +0100 | [diff] [blame] | 129 | x86_power_flags[i][0] ? " " : "", |
Andi Kleen | 3f98bc4 | 2006-01-11 22:42:51 +0100 | [diff] [blame] | 130 | x86_power_flags[i]); |
| 131 | else |
| 132 | seq_printf(m, " [%d]", i); |
| 133 | } |
Hiroshi Shimamoto | f84c3a4 | 2008-02-20 10:47:12 -0800 | [diff] [blame] | 134 | } |
Andi Kleen | 3f98bc4 | 2006-01-11 22:42:51 +0100 | [diff] [blame] | 135 | |
Hiroshi Shimamoto | f84c3a4 | 2008-02-20 10:47:12 -0800 | [diff] [blame] | 136 | seq_printf(m, "\n\n"); |
Andi Kleen | 3dd9d51 | 2005-04-16 15:25:15 -0700 | [diff] [blame] | 137 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | return 0; |
| 139 | } |
| 140 | |
| 141 | static void *c_start(struct seq_file *m, loff_t *pos) |
| 142 | { |
Mike Travis | 92cb761 | 2007-10-19 20:35:04 +0200 | [diff] [blame] | 143 | if (*pos == 0) /* just in case, cpu 0 is not the first */ |
Rusty Russell | 4f06289 | 2009-03-13 14:49:54 +1030 | [diff] [blame] | 144 | *pos = cpumask_first(cpu_online_mask); |
Lai Jiangshan | bc8bcc7 | 2008-10-22 12:42:30 +0800 | [diff] [blame] | 145 | else |
Rusty Russell | 4f06289 | 2009-03-13 14:49:54 +1030 | [diff] [blame] | 146 | *pos = cpumask_next(*pos - 1, cpu_online_mask); |
Lai Jiangshan | bc8bcc7 | 2008-10-22 12:42:30 +0800 | [diff] [blame] | 147 | if ((*pos) < nr_cpu_ids) |
Mike Travis | 92cb761 | 2007-10-19 20:35:04 +0200 | [diff] [blame] | 148 | return &cpu_data(*pos); |
| 149 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | } |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 151 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) |
| 153 | { |
Lai Jiangshan | bc8bcc7 | 2008-10-22 12:42:30 +0800 | [diff] [blame] | 154 | (*pos)++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | return c_start(m, pos); |
| 156 | } |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 157 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | static void c_stop(struct seq_file *m, void *v) |
| 159 | { |
| 160 | } |
Hiroshi Shimamoto | a967cea | 2008-02-20 10:45:29 -0800 | [diff] [blame] | 161 | |
Jan Engelhardt | 8a45eb3 | 2008-01-30 13:33:32 +0100 | [diff] [blame] | 162 | const struct seq_operations cpuinfo_op = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | .start = c_start, |
| 164 | .next = c_next, |
| 165 | .stop = c_stop, |
| 166 | .show = show_cpuinfo, |
| 167 | }; |