maple tree uses lockdep_is_held, so define it as external in the header. Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx> --- tools/testing/radix-tree/linux/lockdep.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/testing/radix-tree/linux/lockdep.h b/tools/testing/radix-tree/linux/lockdep.h index 016cff473cfc..62473ab57f99 100644 --- a/tools/testing/radix-tree/linux/lockdep.h +++ b/tools/testing/radix-tree/linux/lockdep.h @@ -11,4 +11,6 @@ static inline void lockdep_set_class(spinlock_t *lock, struct lock_class_key *key) { } + +extern int lockdep_is_held(const void *); #endif /* _LINUX_LOCKDEP_H */ -- 2.34.1