#include <linux/smp.h>#include <linux/timex.h>#include <linux/string.h>#include <linux/seq_file.h>#include <linux/cpufreq.h> /* *	Get CPU information for use by the procfs. */static void show_cpuinfo_core(struct seq_file *m, struct cpuinfo_x86 *c,			      unsigned int cpu){#ifdef CONFIG_SMP	if (c->x86_max_cores * smp_num_siblings > 1) {		seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);		seq_printf(m, "siblings\t: %d\n",			   cpumask_weight(cpu_core_mask(cpu)));		seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);		seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);		seq_printf(m, "apicid\t\t: %d\n", c->apicid);		seq_printf(m, "initial apicid\t: %d\n", c->initial_apicid);	}#endif} #ifdef CONFIG_X86_32static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c){	/*	 * We use exception 16 if we have hardware math and we've either seen	 * it or the CPU claims it is internal	 */	int fpu_exception = c->hard_math && (ignore_fpu_irq || cpu_has_fpu);	seq_printf(m,		   "fdiv_bug\t: %s\n"		   "hlt_bug\t\t: %s\n"		   "f00f_bug\t: %s\n"		   "coma_bug\t: %s\n"		   "fpu\t\t: %s\n"		   "fpu_exception\t: %s\n"		   "cpuid level\t: %d\n"		   "wp\t\t: %s\n",		   c->fdiv_bug ? "yes" : "no",		   c->hlt_works_ok ? "no" : "yes",		   c->f00f_bug ? "yes" : "no",		   c->coma_bug ? "yes" : "no",		   c->hard_math ? "yes" : "no",		   fpu_exception ? "yes" : "no",		   c->cpuid_level,		   c->wp_works_ok ? "yes" : "no");}#elsestatic void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c){	seq_printf(m,		   "fpu\t\t: yes\n"		   "fpu_exception\t: yes\n"		   "cpuid level\t: %d\n"		   "wp\t\t: yes\n",		   c->cpuid_level);}#endif static int show_cpuinfo(struct seq_file *m, void *v){	struct cpuinfo_x86 *c = v;	unsigned int cpu = 0;	int i; #ifdef CONFIG_SMP	cpu = c->cpu_index;#endif	seq_printf(m, "processor\t: %u\n"		   "vendor_id\t: %s\n"		   "cpu family\t: %d\n"		   "model\t\t: %u\n"		   "model name\t: %s\n",		   cpu,		   c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown",		   c->x86,		   c->x86_model,		   c->x86_model_id[0] ? c->x86_model_id : "unknown"); 	if (c->x86_mask || c->cpuid_level >= 0)		seq_printf(m, "stepping\t: %d\n", c->x86_mask);	else		seq_printf(m, "stepping\t: unknown\n");	if (c->microcode)		seq_printf(m, "microcode\t: 0x%x\n", c->microcode); 	if (cpu_has(c, X86_FEATURE_TSC)) {		unsigned int freq = cpufreq_quick_get(cpu); 		if (!freq)			freq = cpu_khz;		seq_printf(m, "cpu MHz\t\t: %u.%03u\n",			   freq / 1000, (freq % 1000));	} 	/* Cache size */	if (c->x86_cache_size >= 0)		seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size); 	show_cpuinfo_core(m, c, cpu);	show_cpuinfo_misc(m, c); 	seq_printf(m, "flags\t\t:");	for (i = 0; i < 32*NCAPINTS; i++)		if (cpu_has(c, i) && x86_cap_flags[i] != NULL)			seq_printf(m, " %s", x86_cap_flags[i]); 	seq_printf(m, "\nbogomips\t: %lu.%02lu\n",		   c->loops_per_jiffy/(500000/HZ),		   (c->loops_per_jiffy/(5000/HZ)) % 100); #ifdef CONFIG_X86_64	if (c->x86_tlbsize > 0)		seq_printf(m, "TLB size\t: %d 4K pages\n", c->x86_tlbsize);#endif	seq_printf(m, "clflush size\t: %u\n", c->x86_clflush_size);	seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment);	seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n",		   c->x86_phys_bits, c->x86_virt_bits); 	seq_printf(m, "power management:");	for (i = 0; i < 32; i++) {		if (c->x86_power & (1 << i)) {			if (i < ARRAY_SIZE(x86_power_flags) &&			    x86_power_flags[i])				seq_printf(m, "%s%s",					   x86_power_flags[i][0] ? " " : "",					   x86_power_flags[i]);			else				seq_printf(m, " [%d]", i);		}	} 	seq_printf(m, "\n\n"); 	return 0;} static void *c_start(struct seq_file *m, loff_t *pos){	if (*pos == 0)	/* just in case, cpu 0 is not the first */		*pos = cpumask_first(cpu_online_mask);	else		*pos = cpumask_next(*pos - 1, cpu_online_mask);	if ((*pos) < nr_cpu_ids)		return &cpu_data(*pos);	return NULL;} static void *c_next(struct seq_file *m, void *v, loff_t *pos){	(*pos)++;	return c_start(m, pos);} static void c_stop(struct seq_file *m, void *v){} const struct seq_operations cpuinfo_op = {	.start	= c_start,	.next	= c_next,	.stop	= c_stop,	.show	= show_cpuinfo,};