1 files changed, 10 insertions, 0 deletions

diff --git a/tools/testing/radix-tree/linux/preempt.h b/tools/testing/radix-tree/linux/preempt.h
index 65c04c226965..35c5ac81529f 100644
--- a/tools/testing/radix-tree/linux/preempt.h
+++ b/tools/testing/radix-tree/linux/preempt.h
@@ -1,4 +1,14 @@
+#ifndef __LINUX_PREEMPT_H
+#define __LINUX_PREEMPT_H
+
 extern int preempt_count;
 
 #define preempt_disable()       uatomic_inc(&preempt_count)
 #define preempt_enable()        uatomic_dec(&preempt_count)
+
+static inline int in_interrupt(void)
+{
+        return 0;
+}
+
+#endif /* __LINUX_PREEMPT_H */