linux-kernel - don't print migration cost when only 1 CPU

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Message-ID: <20060801182000.GI22240@redhat.com>
Date:	Tue, 1 Aug 2006 14:20:00 -0400
From:	Dave Jones <davej@...hat.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: 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@...hat.com>

--- linux-2.6/kernel/sched.c~	2006-04-24 19:30:13.000000000 -0400
+++ linux-2.6/kernel/sched.c	2006-04-24 19:32:49.000000000 -0400
@@ -5518,13 +5518,15 @@ static void calibrate_migration_costs(co
 #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)

-- 
http://www.codemonkey.org.uk
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