diff --git a/include/linux/irq.h b/include/linux/irq.h
index a6899402b522..1695054e8c63 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -147,8 +147,6 @@ struct irq_chip {
  * @dir:		/proc/irq/ procfs entry
  * @affinity_entry:	/proc/irq/smp_affinity procfs entry on SMP
  * @name:		flow handler name for /proc/interrupts output
- *
- * Pad this out to 32 bytes for cache and indexing reasons.
  */
 struct irq_desc {
 	irq_flow_handler_t	handle_irq;
@@ -175,7 +173,7 @@ struct irq_desc {
 	struct proc_dir_entry	*dir;
 #endif
 	const char		*name;
-} ____cacheline_aligned;
+} ____cacheline_internodealigned_in_smp;
 
 extern struct irq_desc irq_desc[NR_IRQS];
 
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index aff1f0fabb0d..515ad40bde15 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -48,7 +48,7 @@ handle_bad_irq(unsigned int irq, struct irq_desc *desc)
  *
  * Controller mappings for all interrupt sources:
  */
-struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned = {
+struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = {
 	[0 ... NR_IRQS-1] = {
 		.status = IRQ_DISABLED,
 		.chip = &no_irq_chip,