[PATCH] invert irq/migration.c brach prediction

If you get to that point in the code it means that desc->move_irq is set,
pending_irq_cpumask[irq] and cpu_online_map should have a value.  Still
pretty good chance anding those two you'll still have a value.  So these
two branch predictors should be inverted.

Signed-off-by: Daniel Walker <dwalker@mvista.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index 134f9f2e0e39..a12d00eb5e7c 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -30,7 +30,7 @@ void move_native_irq(int irq)
 
         desc->move_irq = 0;
 
-        if (likely(cpus_empty(pending_irq_cpumask[irq])))
+        if (unlikely(cpus_empty(pending_irq_cpumask[irq])))
                 return;
 
         if (!desc->handler->set_affinity)
@@ -49,7 +49,7 @@ void move_native_irq(int irq)
          * cause some ioapics to mal-function.
          * Being paranoid i guess!
          */
-        if (unlikely(!cpus_empty(tmp))) {
+        if (likely(!cpus_empty(tmp))) {
                 if (likely(!(desc->status & IRQ_DISABLED)))
                         desc->handler->disable(irq);