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-rw-r--r--kernel/rcu/tree.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index b60f2b6caa14..ec62a05bfdb3 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -24,6 +24,7 @@
#include <linux/cache.h>
#include <linux/spinlock.h>
+#include <linux/rtmutex.h>
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <linux/seqlock.h>