[mirror_ubuntu-focal-kernel.git] / arch / x86 / kernel / cpu / proc.c

#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
	seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
	seq_printf(m, "siblings\t: %d\n",
		   cpumask_weight(topology_core_cpumask(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_32
static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c)
{
	seq_printf(m,
		   "fdiv_bug\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: yes\n",
		   static_cpu_has_bug(X86_BUG_FDIV) ? "yes" : "no",
		   static_cpu_has_bug(X86_BUG_F00F) ? "yes" : "no",
		   static_cpu_has_bug(X86_BUG_COMA) ? "yes" : "no",
		   static_cpu_has(X86_FEATURE_FPU) ? "yes" : "no",
		   static_cpu_has(X86_FEATURE_FPU) ? "yes" : "no",
		   c->cpuid_level);
}
#else
static 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;
	int i;

	cpu = c->cpu_index;
	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_puts(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_puts(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_puts(m, "\nbugs\t\t:");
	for (i = 0; i < 32*NBUGINTS; i++) {
		unsigned int bug_bit = 32*NCAPINTS + i;

		if (cpu_has_bug(c, bug_bit) && x86_bug_flags[i])
			seq_printf(m, " %s", x86_bug_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_puts(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_puts(m, "\n\n");

	return 0;
}

static void *c_start(struct seq_file *m, loff_t *pos)
{
	*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,
};
Commit	Line	Data
1da177e4 LT	1	#include <linux/smp.h>
	2	#include <linux/timex.h>
	3	#include <linux/string.h>
1da177e4	4	#include <linux/seq_file.h>
95235ca2	5	#include <linux/cpufreq.h>
1da177e4 LT	6
	7	/*
	8	* Get CPU information for use by the procfs.
	9	*/
a967ceac HS	10	static void show_cpuinfo_core(struct seq_file m, struct cpuinfo_x86 c,
	11	unsigned int cpu)
	12	{
327f4387	13	#ifdef CONFIG_SMP
a477c859	14	seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
7d79a7bd BG	15	seq_printf(m, "siblings\t: %d\n",
7d79a7bd BG	16	cpumask_weight(topology_core_cpumask(cpu)));
a477c859 HD	17	seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
	18	seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
	19	seq_printf(m, "apicid\t\t: %d\n", c->apicid);
	20	seq_printf(m, "initial apicid\t: %d\n", c->initial_apicid);
a967ceac HS	21	#endif
	22	}
	23
327f4387	24	#ifdef CONFIG_X86_32
a967ceac HS	25	static void show_cpuinfo_misc(struct seq_file m, struct cpuinfo_x86 c)
a967ceac HS	26	{
a967ceac HS	27	seq_printf(m,
a967ceac HS	28	"fdiv_bug\t: %s\n"
a967ceac HS	29	"f00f_bug\t: %s\n"
	30	"coma_bug\t: %s\n"
	31	"fpu\t\t: %s\n"
	32	"fpu_exception\t: %s\n"
	33	"cpuid level\t: %d\n"
6415813b	34	"wp\t\t: yes\n",
93a829e8	35	static_cpu_has_bug(X86_BUG_FDIV) ? "yes" : "no",
e2604b49	36	static_cpu_has_bug(X86_BUG_F00F) ? "yes" : "no",
c5b41a67	37	static_cpu_has_bug(X86_BUG_COMA) ? "yes" : "no",
60e019eb PA	38	static_cpu_has(X86_FEATURE_FPU) ? "yes" : "no",
60e019eb PA	39	static_cpu_has(X86_FEATURE_FPU) ? "yes" : "no",
6415813b	40	c->cpuid_level);
a967ceac	41	}
2aef7720	42	#else
2aef7720 HS	43	static void show_cpuinfo_misc(struct seq_file m, struct cpuinfo_x86 c)
	44	{
	45	seq_printf(m,
	46	"fpu\t\t: yes\n"
	47	"fpu_exception\t: yes\n"
	48	"cpuid level\t: %d\n"
	49	"wp\t\t: yes\n",
	50	c->cpuid_level);
	51	}
	52	#endif
a967ceac	53
1da177e4 LT	54	static int show_cpuinfo(struct seq_file m, void v)
1da177e4 LT	55	{
1da177e4	56	struct cpuinfo_x86 *c = v;
141168c3	57	unsigned int cpu;
a967ceac	58	int i;
1da177e4	59
a967ceac	60	cpu = c->cpu_index;
a967ceac HS	61	seq_printf(m, "processor\t: %u\n"
	62	"vendor_id\t: %s\n"
	63	"cpu family\t: %d\n"
	64	"model\t\t: %u\n"
	65	"model name\t: %s\n",
	66	cpu,
	67	c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown",
	68	c->x86,
	69	c->x86_model,
	70	c->x86_model_id[0] ? c->x86_model_id : "unknown");
1da177e4 LT	71
	72	if (c->x86_mask \|\| c->cpuid_level >= 0)
	73	seq_printf(m, "stepping\t: %d\n", c->x86_mask);
	74	else
3736708f	75	seq_puts(m, "stepping\t: unknown\n");
506ed6b5	76	if (c->microcode)
881e23e5	77	seq_printf(m, "microcode\t: 0x%x\n", c->microcode);
1da177e4	78
a967ceac HS	79	if (cpu_has(c, X86_FEATURE_TSC)) {
	80	unsigned int freq = cpufreq_quick_get(cpu);
	81
95235ca2 VP	82	if (!freq)
95235ca2 VP	83	freq = cpu_khz;
a3a255e7	84	seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
a967ceac	85	freq / 1000, (freq % 1000));
1da177e4 LT	86	}
	87
	88	/* Cache size */
	89	if (c->x86_cache_size >= 0)
	90	seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size);
a967ceac HS	91
	92	show_cpuinfo_core(m, c, cpu);
	93	show_cpuinfo_misc(m, c);
	94
3736708f	95	seq_puts(m, "flags\t\t:");
a967ceac HS	96	for (i = 0; i < 32*NCAPINTS; i++)
a967ceac HS	97	if (cpu_has(c, i) && x86_cap_flags[i] != NULL)
1da177e4 LT	98	seq_printf(m, " %s", x86_cap_flags[i]);
1da177e4 LT	99
3736708f	100	seq_puts(m, "\nbugs\t\t:");
80a208bd BP	101	for (i = 0; i < 32*NBUGINTS; i++) {
	102	unsigned int bug_bit = 32*NCAPINTS + i;
	103
	104	if (cpu_has_bug(c, bug_bit) && x86_bug_flags[i])
	105	seq_printf(m, " %s", x86_bug_flags[i]);
	106	}
	107
f84c3a42 HS	108	seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
	109	c->loops_per_jiffy/(500000/HZ),
	110	(c->loops_per_jiffy/(5000/HZ)) % 100);
2aef7720 HS	111
	112	#ifdef CONFIG_X86_64
	113	if (c->x86_tlbsize > 0)
	114	seq_printf(m, "TLB size\t: %d 4K pages\n", c->x86_tlbsize);
	115	#endif
f84c3a42	116	seq_printf(m, "clflush size\t: %u\n", c->x86_clflush_size);
2aef7720 HS	117	seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment);
	118	seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n",
	119	c->x86_phys_bits, c->x86_virt_bits);
f84c3a42	120
3736708f	121	seq_puts(m, "power management:");
f84c3a42	122	for (i = 0; i < 32; i++) {
3f98bc49 AK	123	if (c->x86_power & (1 << i)) {
	124	if (i < ARRAY_SIZE(x86_power_flags) &&
	125	x86_power_flags[i])
	126	seq_printf(m, "%s%s",
8bdbd962	127	x86_power_flags[i][0] ? " " : "",
3f98bc49 AK	128	x86_power_flags[i]);
	129	else
	130	seq_printf(m, " [%d]", i);
	131	}
f84c3a42	132	}
3f98bc49	133
3736708f	134	seq_puts(m, "\n\n");
3dd9d514	135
1da177e4 LT	136	return 0;
	137	}
	138
	139	static void c_start(struct seq_file m, loff_t *pos)
	140	{
dec08a83	141	pos = cpumask_next(pos - 1, cpu_online_mask);
bc8bcc79	142	if ((*pos) < nr_cpu_ids)
92cb7612 MT	143	return &cpu_data(*pos);
92cb7612 MT	144	return NULL;
1da177e4	145	}
a967ceac	146
1da177e4 LT	147	static void c_next(struct seq_file m, void v, loff_t pos)
1da177e4 LT	148	{
bc8bcc79	149	(*pos)++;
1da177e4 LT	150	return c_start(m, pos);
1da177e4 LT	151	}
a967ceac	152
1da177e4 LT	153	static void c_stop(struct seq_file m, void v)
	154	{
	155	}
a967ceac	156
8a45eb31	157	const struct seq_operations cpuinfo_op = {
1da177e4 LT	158	.start = c_start,
	159	.next = c_next,
	160	.stop = c_stop,
	161	.show = show_cpuinfo,
	162	};