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Commit 157467ba authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

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: default avatarPeter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 09214545

arch/s390/kernel/processor.c

+14 −0
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt



#include <linux/cpufeature.h>

#include <linux/bitops.h>

#include <linux/kernel.h>

#include <linux/sched/mm.h>

#include <linux/init.h>
@@ -91,6 +92,18 @@ int cpu_have_feature(unsigned int num) 
}

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 const char *hwcap_str[] = {
@@ -116,6 +129,7 @@ static void show_cpu_summary(struct seq_file *m, void *v) 
		if (int_hwcap_str[i] && (int_hwcap & (1UL << i)))

			seq_printf(m, "%s ", int_hwcap_str[i]);

	seq_puts(m, "\n");

	show_facilities(m);

	show_cacheinfo(m);

	for_each_online_cpu(cpu) {

		struct cpuid *id = &per_cpu(cpu_info.cpu_id, cpu);