Replace __get_cpu_var used for address calculation with this_cpu_ptr.

Acked-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Christoph Lameter <cl@linux.com>

Index: linux/drivers/clocksource/metag_generic.c
===================================================================
--- linux.orig/drivers/clocksource/metag_generic.c	2014-04-14 13:24:54.861360279 -0500
+++ linux/drivers/clocksource/metag_generic.c	2014-04-14 13:24:54.857360357 -0500
@@ -90,7 +90,7 @@
 
 static irqreturn_t metag_timer_interrupt(int irq, void *dummy)
 {
-	struct clock_event_device *evt = &__get_cpu_var(local_clockevent);
+	struct clock_event_device *evt = this_cpu_ptr(&local_clockevent);
 
 	evt->event_handler(evt);