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-rw-r--r--kernel/futex/futex.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/futex/futex.h b/kernel/futex/futex.h
index c264cbeab71c..b5379c0e6d6d 100644
--- a/kernel/futex/futex.h
+++ b/kernel/futex/futex.h
@@ -3,6 +3,7 @@
#define _FUTEX_H
#include <linux/futex.h>
+#include <linux/rtmutex.h>
#include <linux/sched/wake_q.h>
#ifdef CONFIG_PREEMPT_RT