NR_CPUS: Replace NR_CPUS in arch/x86/kernel/cpu/proc.c
[linux-2.6.git] / arch / x86 / kernel / cpu / proc.c
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 #ifdef CONFIG_X86_32
11 static void show_cpuinfo_core(struct seq_file *m, struct cpuinfo_x86 *c,
12                               unsigned int cpu)
13 {
14 #ifdef CONFIG_X86_HT
15         if (c->x86_max_cores * smp_num_siblings > 1) {
16                 seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
17                 seq_printf(m, "siblings\t: %d\n",
18                            cpus_weight(per_cpu(cpu_core_map, cpu)));
19                 seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
20                 seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
21                 seq_printf(m, "apicid\t\t: %d\n", c->apicid);
22                 seq_printf(m, "initial apicid\t: %d\n", c->initial_apicid);
23         }
24 #endif
25 }
26
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 }
52 #else
53 static void show_cpuinfo_core(struct seq_file *m, struct cpuinfo_x86 *c,
54                               unsigned int cpu)
55 {
56 #ifdef CONFIG_SMP
57         if (c->x86_max_cores * smp_num_siblings > 1) {
58                 seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
59                 seq_printf(m, "siblings\t: %d\n",
60                            cpus_weight(per_cpu(cpu_core_map, cpu)));
61                 seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
62                 seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
63                 seq_printf(m, "apicid\t\t: %d\n", c->apicid);
64                 seq_printf(m, "initial apicid\t: %d\n", c->initial_apicid);
65         }
66 #endif
67 }
68
69 static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c)
70 {
71         seq_printf(m,
72                    "fpu\t\t: yes\n"
73                    "fpu_exception\t: yes\n"
74                    "cpuid level\t: %d\n"
75                    "wp\t\t: yes\n",
76                    c->cpuid_level);
77 }
78 #endif
79
80 static int show_cpuinfo(struct seq_file *m, void *v)
81 {
82         struct cpuinfo_x86 *c = v;
83         unsigned int cpu = 0;
84         int i;
85
86 #ifdef CONFIG_SMP
87         cpu = c->cpu_index;
88 #endif
89         seq_printf(m, "processor\t: %u\n"
90                    "vendor_id\t: %s\n"
91                    "cpu family\t: %d\n"
92                    "model\t\t: %u\n"
93                    "model name\t: %s\n",
94                    cpu,
95                    c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown",
96                    c->x86,
97                    c->x86_model,
98                    c->x86_model_id[0] ? c->x86_model_id : "unknown");
99
100         if (c->x86_mask || c->cpuid_level >= 0)
101                 seq_printf(m, "stepping\t: %d\n", c->x86_mask);
102         else
103                 seq_printf(m, "stepping\t: unknown\n");
104
105         if (cpu_has(c, X86_FEATURE_TSC)) {
106                 unsigned int freq = cpufreq_quick_get(cpu);
107
108                 if (!freq)
109                         freq = cpu_khz;
110                 seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
111                            freq / 1000, (freq % 1000));
112         }
113
114         /* Cache size */
115         if (c->x86_cache_size >= 0)
116                 seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size);
117
118         show_cpuinfo_core(m, c, cpu);
119         show_cpuinfo_misc(m, c);
120
121         seq_printf(m, "flags\t\t:");
122         for (i = 0; i < 32*NCAPINTS; i++)
123                 if (cpu_has(c, i) && x86_cap_flags[i] != NULL)
124                         seq_printf(m, " %s", x86_cap_flags[i]);
125
126         seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
127                    c->loops_per_jiffy/(500000/HZ),
128                    (c->loops_per_jiffy/(5000/HZ)) % 100);
129
130 #ifdef CONFIG_X86_64
131         if (c->x86_tlbsize > 0)
132                 seq_printf(m, "TLB size\t: %d 4K pages\n", c->x86_tlbsize);
133 #endif
134         seq_printf(m, "clflush size\t: %u\n", c->x86_clflush_size);
135 #ifdef CONFIG_X86_64
136         seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment);
137         seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n",
138                    c->x86_phys_bits, c->x86_virt_bits);
139 #endif
140
141         seq_printf(m, "power management:");
142         for (i = 0; i < 32; i++) {
143                 if (c->x86_power & (1 << i)) {
144                         if (i < ARRAY_SIZE(x86_power_flags) &&
145                             x86_power_flags[i])
146                                 seq_printf(m, "%s%s",
147                                            x86_power_flags[i][0]?" ":"",
148                                            x86_power_flags[i]);
149                         else
150                                 seq_printf(m, " [%d]", i);
151                 }
152         }
153
154         seq_printf(m, "\n\n");
155
156         return 0;
157 }
158
159 static void *c_start(struct seq_file *m, loff_t *pos)
160 {
161         if (*pos == 0)  /* just in case, cpu 0 is not the first */
162                 *pos = first_cpu(cpu_online_map);
163         if ((*pos) < nr_cpu_ids && cpu_online(*pos))
164                 return &cpu_data(*pos);
165         return NULL;
166 }
167
168 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
169 {
170         *pos = next_cpu(*pos, cpu_online_map);
171         return c_start(m, pos);
172 }
173
174 static void c_stop(struct seq_file *m, void *v)
175 {
176 }
177
178 const struct seq_operations cpuinfo_op = {
179         .start  = c_start,
180         .next   = c_next,
181         .stop   = c_stop,
182         .show   = show_cpuinfo,
183 };