Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 167 insertions, 0 deletions

diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c
new file mode 100644
index 000000000..2c8522a39
--- /dev/null
+++ b/arch/x86/kernel/cpu/proc.c
@@ -0,0 +1,167 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/smp.h>
+#include <linux/timex.h>
+#include <linux/string.h>
+#include <linux/seq_file.h>
+#include <linux/cpufreq.h>
+
+#include "cpu.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_stepping || c->cpuid_level >= 0)
+		seq_printf(m, "stepping\t: %d\n", c->x86_stepping);
+	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 = aperfmperf_get_khz(cpu);
+
+		if (!freq)
+			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)
+		seq_printf(m, "cache size\t: %u 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,
+};