From: Dave Jones <davej@redhat.com>
Date: Tue, 3 Oct 2006 08:14:07 +0000 (-0700)
Subject: [PATCH] sched: don't print migration cost when only 1 CPU
X-Git-Tag: v2.6.19-rc1~345
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=74732646431a1bb7e23e6b564127a8881cfef900;p=linux-2.6

[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>
---

diff --git a/kernel/sched.c b/kernel/sched.c
index 6b956bd9b4..6d7bf55ec3 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)