From 3c3683a9e8891f1da6dabf1d1fc8087d85d056a4 Mon Sep 17 00:00:00 2001
From: Christopher Kenna <cjk@cs.unc.edu>
Date: Thu, 20 Sep 2012 14:30:45 -0400
Subject: Include a missing header file.

---
 include/litmus/trace_irq.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/litmus/trace_irq.h b/include/litmus/trace_irq.h
index f18b127a089d..b717b1d55396 100644
--- a/include/litmus/trace_irq.h
+++ b/include/litmus/trace_irq.h
@@ -3,6 +3,8 @@
 
 #ifdef CONFIG_SCHED_OVERHEAD_TRACE
 
+#include <linux/percpu.h>
+
 extern DEFINE_PER_CPU(atomic_t, irq_fired_count);
 
 static inline void ft_irq_fired(void)
-- 
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