[PATCH] More irq balance fixes

From: Andi Kleen <ak@suse.de>

John Stultz noticed that kirqd didn't start because of another logic error,
which broke irq balancing.  This was still a fallout from the generic
subarchitecture changes.

Actually it still refuses to balance anything on my test box, but perhaps
I'm just not able to generate enough interrupts.

Anyways, with this patch the thread is running again at least.

arch/i386/kernel/io_apic.c

@@ -352,16 +352,8 @@ static inline void balance_irq(int cpu, int irq)
 	unsigned long allowed_mask;
 	unsigned int new_cpu;
 		
-	if (irqbalance_disabled == IRQBALANCE_CHECK_ARCH)
-		irqbalance_disabled = NO_BALANCE_IRQ;
-	if (irqbalance_disabled) { 
-		static int warned;
-		if (warned == 0) {
-			printk("irqbalance disabled\n");
-			warned = 1;
-		} 
+	if (irqbalance_disabled)
 		return; 
-	} 
 
 	allowed_mask = cpu_online_map & irq_affinity[irq];
 	new_cpu = move(cpu, allowed_mask, now, 1);
@@ -620,6 +612,9 @@ static int __init balanced_irq_init(void)
 	struct cpuinfo_x86 *c;
 
         c = &boot_cpu_data;
+	/* When not overwritten by the command line ask subarchitecture. */
+	if (irqbalance_disabled == IRQBALANCE_CHECK_ARCH)
+		irqbalance_disabled = NO_BALANCE_IRQ;
 	if (irqbalance_disabled)
 		return 0;