--- zzzz-none-000/linux-2.6.28.10/kernel/irq/handle.c	2009-05-02 18:54:43.000000000 +0000
+++ puma5-6360-529/linux-2.6.28.10/kernel/irq/handle.c	2010-04-07 09:56:53.000000000 +0000
@@ -46,7 +46,7 @@
  *
  * Controller mappings for all interrupt sources:
  */
-int nr_irqs = NR_IRQS;
+unsigned int nr_irqs = NR_IRQS;
 EXPORT_SYMBOL_GPL(nr_irqs);
 
 struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = {
@@ -173,8 +173,11 @@
 
 	kstat_incr_irqs_this_cpu(irq, desc);
 
+    /*--- printk("I"); ---*/
+
 	if (CHECK_IRQ_PER_CPU(desc->status)) {
 		irqreturn_t action_ret;
+        /*--- printk("perCPU "); ---*/
 
 		/*
 		 * No locking required for CPU-local interrupts: