2 #include <linux/timex.h>
3 #include <linux/string.h>
4 #include <asm/semaphore.h>
5 #include <linux/seq_file.h>
6 #include <linux/cpufreq.h>
9 * Get CPU information for use by the procfs.
11 static int show_cpuinfo(struct seq_file *m, void *v)
13 struct cpuinfo_x86 *c = v;
20 seq_printf(m, "processor\t: %d\n"
26 c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown",
29 c->x86_model_id[0] ? c->x86_model_id : "unknown");
31 if (c->x86_mask || c->cpuid_level >= 0)
32 seq_printf(m, "stepping\t: %d\n", c->x86_mask);
34 seq_printf(m, "stepping\t: unknown\n");
36 if ( cpu_has(c, X86_FEATURE_TSC) ) {
37 unsigned int freq = cpufreq_quick_get(n);
40 seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
41 freq / 1000, (freq % 1000));
45 if (c->x86_cache_size >= 0)
46 seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size);
48 if (c->x86_max_cores * smp_num_siblings > 1) {
49 seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
50 seq_printf(m, "siblings\t: %d\n",
51 cpus_weight(per_cpu(cpu_core_map, n)));
52 seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
53 seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
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"
64 "fpu_exception\t: %s\n"
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",
75 c->wp_works_ok ? "yes" : "no");
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]);
82 for (i = 0; i < 32; i++)
83 if (c->x86_power & (1 << i)) {
84 if (i < ARRAY_SIZE(x86_power_flags) &&
87 x86_power_flags[i][0]?" ":"",
90 seq_printf(m, " [%d]", i);
93 seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
94 c->loops_per_jiffy/(500000/HZ),
95 (c->loops_per_jiffy/(5000/HZ)) % 100);
96 seq_printf(m, "clflush size\t: %u\n\n", c->x86_clflush_size);
101 static void *c_start(struct seq_file *m, loff_t *pos)
103 if (*pos == 0) /* just in case, cpu 0 is not the first */
104 *pos = first_cpu(cpu_online_map);
105 if ((*pos) < NR_CPUS && cpu_online(*pos))
106 return &cpu_data(*pos);
109 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
111 *pos = next_cpu(*pos, cpu_online_map);
112 return c_start(m, pos);
114 static void c_stop(struct seq_file *m, void *v)
117 const struct seq_operations cpuinfo_op = {
121 .show = show_cpuinfo,