[S390] topology: add SCHED_MC config option

This allows us to easily check for performance differences seen with
!CONFIG_SCHED_MC and topology=off.
Actually there shouldn't be any (besides a small overhead because of
additional code).

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/s390/kernel/sysinfo.c b/arch/s390/kernel/sysinfo.c
index f04d93aa48e..5c9e439bf3f 100644
--- a/arch/s390/kernel/sysinfo.c
+++ b/arch/s390/kernel/sysinfo.c
@@ -106,11 +106,13 @@ static int stsi_15_1_x(struct sysinfo_15_1_x *info, char *page, int len)
         for (i = 0; i < TOPOLOGY_NR_MAG; i++)
                 len += sprintf(page + len, " %d", info->mag[i]);
         len += sprintf(page + len, "\n");
+#ifdef CONFIG_SCHED_MC
         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");
+#endif
         return len;
 }