[PATCH] sched: don't print migration cost when only 1 CPU

If only a single CPU is present, printing this doesn't make much sense.

Signed-off-by: Dave Jones <davej@redhat.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 8 insertions, 6 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index 6b956bd9b49a..6d7bf55ec33d 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -5977,13 +5977,15 @@ static void calibrate_migration_costs(const cpumask_t *cpu_map)
 #endif
                 );
         if (system_state == SYSTEM_BOOTING) {
-                printk("migration_cost=");
-                for (distance = 0; distance <= max_distance; distance++) {
-                        if (distance)
-                                printk(",");
-                        printk("%ld", (long)migration_cost[distance] / 1000);
+                if (num_online_cpus() > 1) {
+                        printk("migration_cost=");
+                        for (distance = 0; distance <= max_distance; distance++) {
+                                if (distance)
+                                        printk(",");
+                                printk("%ld", (long)migration_cost[distance] / 1000);
+                        }
+                        printk("\n");
                 }
-                printk("\n");
         }
         j1 = jiffies;
         if (migration_debug)