提交 157467ba 编写于 作者: H Heiko Carstens 提交者: Martin Schwidefsky

s390/cpuinfo: show facilities as reported by stfle

Add a new line to /proc/cpuinfo which shows all available facilities
as reported by the stfle instruction:

> cat /proc/cpuinfo
...
facilities      : 0 1 2 3 4 6 7 ...
...
Reviewed-by: NPeter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
上级 09214545
...@@ -7,6 +7,7 @@ ...@@ -7,6 +7,7 @@
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/cpufeature.h> #include <linux/cpufeature.h>
#include <linux/bitops.h>
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/sched/mm.h> #include <linux/sched/mm.h>
#include <linux/init.h> #include <linux/init.h>
...@@ -91,6 +92,18 @@ int cpu_have_feature(unsigned int num) ...@@ -91,6 +92,18 @@ int cpu_have_feature(unsigned int num)
} }
EXPORT_SYMBOL(cpu_have_feature); EXPORT_SYMBOL(cpu_have_feature);
static void show_facilities(struct seq_file *m)
{
unsigned int bit;
long *facilities;
facilities = (long *)&S390_lowcore.stfle_fac_list;
seq_puts(m, "facilities :");
for_each_set_bit_inv(bit, facilities, MAX_FACILITY_BIT)
seq_printf(m, " %d", bit);
seq_putc(m, '\n');
}
static void show_cpu_summary(struct seq_file *m, void *v) static void show_cpu_summary(struct seq_file *m, void *v)
{ {
static const char *hwcap_str[] = { static const char *hwcap_str[] = {
...@@ -116,6 +129,7 @@ static void show_cpu_summary(struct seq_file *m, void *v) ...@@ -116,6 +129,7 @@ static void show_cpu_summary(struct seq_file *m, void *v)
if (int_hwcap_str[i] && (int_hwcap & (1UL << i))) if (int_hwcap_str[i] && (int_hwcap & (1UL << i)))
seq_printf(m, "%s ", int_hwcap_str[i]); seq_printf(m, "%s ", int_hwcap_str[i]);
seq_puts(m, "\n"); seq_puts(m, "\n");
show_facilities(m);
show_cacheinfo(m); show_cacheinfo(m);
for_each_online_cpu(cpu) { for_each_online_cpu(cpu) {
struct cpuid *id = &per_cpu(cpu_info.cpu_id, cpu); struct cpuid *id = &per_cpu(cpu_info.cpu_id, cpu);
......
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