From 157467ba9fb7e379f0540707dd89111de441e45e Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Sat, 25 Feb 2017 12:16:48 +0100 Subject: [PATCH] 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: Peter Oberparleiter Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/processor.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c index c73709869447..778cd6536175 100644 --- a/arch/s390/kernel/processor.c +++ b/arch/s390/kernel/processor.c @@ -7,6 +7,7 @@ #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt #include +#include #include #include #include @@ -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); -- 2.20.1