3 files changed, 36 insertions, 3 deletions

diff --git a/arch/s390/include/asm/topology.h b/arch/s390/include/asm/topology.h
index 051107a2c5e2..c5338834ddbd 100644
--- a/arch/s390/include/asm/topology.h
+++ b/arch/s390/include/asm/topology.h
@@ -2,6 +2,7 @@
 #define _ASM_S390_TOPOLOGY_H
 
 #include <linux/cpumask.h>
+#include <asm/sysinfo.h>
 
 extern unsigned char cpu_core_id[NR_CPUS];
 extern cpumask_t cpu_core_map[NR_CPUS];
@@ -32,6 +33,7 @@ static inline const struct cpumask *cpu_book_mask(unsigned int cpu)
 
 int topology_set_cpu_management(int fc);
 void topology_schedule_update(void);
+void store_topology(struct sysinfo_15_1_x *info);
 
 #define POLARIZATION_UNKNWN     (-1)
 #define POLARIZATION_HRZ        (0)
diff --git a/arch/s390/kernel/sysinfo.c b/arch/s390/kernel/sysinfo.c
index a91274b4eb8f..f04d93aa48ec 100644
--- a/arch/s390/kernel/sysinfo.c
+++ b/arch/s390/kernel/sysinfo.c
@@ -15,6 +15,7 @@
 #include <asm/ebcdic.h>
 #include <asm/sysinfo.h>
 #include <asm/cpcmd.h>
+#include <asm/topology.h>
 
 /* Sigh, math-emu. Don't ask. */
 #include <asm/sfp-util.h>
@@ -84,6 +85,35 @@ static int stsi_1_1_1(struct sysinfo_1_1_1 *info, char *page, int len)
         return len;
 }
 
+static int stsi_15_1_x(struct sysinfo_15_1_x *info, char *page, int len)
+{
+        static int max_mnest;
+        int i, rc;
+
+        len += sprintf(page + len, "\n");
+        if (!MACHINE_HAS_TOPOLOGY)
+                return len;
+        if (max_mnest) {
+                stsi(info, 15, 1, max_mnest);
+        } else {
+                for (max_mnest = 6; max_mnest > 1; max_mnest--) {
+                        rc = stsi(info, 15, 1, max_mnest);
+                        if (rc != -ENOSYS)
+                                break;
+                }
+        }
+        len += sprintf(page + len, "CPU Topology HW:     ");
+        for (i = 0; i < TOPOLOGY_NR_MAG; i++)
+                len += sprintf(page + len, " %d", info->mag[i]);
+        len += sprintf(page + len, "\n");
+        store_topology(info);
+        len += sprintf(page + len, "CPU Topology SW:     ");
+        for (i = 0; i < TOPOLOGY_NR_MAG; i++)
+                len += sprintf(page + len, " %d", info->mag[i]);
+        len += sprintf(page + len, "\n");
+        return len;
+}
+
 static int stsi_1_2_2(struct sysinfo_1_2_2 *info, char *page, int len)
 {
         struct sysinfo_1_2_2_extension *ext;
@@ -94,7 +124,6 @@ static int stsi_1_2_2(struct sysinfo_1_2_2 *info, char *page, int len)
         ext = (struct sysinfo_1_2_2_extension *)
                 ((unsigned long) info + info->acc_offset);
 
-        len += sprintf(page + len, "\n");
         len += sprintf(page + len, "CPUs Total:           %d\n",
                        info->cpus_total);
         len += sprintf(page + len, "CPUs Configured:      %d\n",
@@ -224,6 +253,9 @@ static int proc_read_sysinfo(char *page, char **start,
                 len = stsi_1_1_1((struct sysinfo_1_1_1 *) info, page, len);
 
         if (level >= 1)
+                len = stsi_15_1_x((struct sysinfo_15_1_x *) info, page, len);
+
+        if (level >= 1)
                 len = stsi_1_2_2((struct sysinfo_1_2_2 *) info, page, len);
 
         if (level >= 2)
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index ffea01e63218..a9dee9048ee5 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -18,7 +18,6 @@
 #include <linux/cpuset.h>
 #include <asm/delay.h>
 #include <asm/s390_ext.h>
-#include <asm/sysinfo.h>
 
 #define PTF_HORIZONTAL  (0UL)
 #define PTF_VERTICAL    (1UL)
@@ -215,7 +214,7 @@ static void update_cpu_core_map(void)
         spin_unlock_irqrestore(&topology_lock, flags);
 }
 
-static void store_topology(struct tl_info *info)
+void store_topology(struct sysinfo_15_1_x *info)
 {
 #ifdef CONFIG_SCHED_BOOK
         int rc;