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-rw-r--r--tools/testing/selftests/bpf/bpf_util.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/bpf_util.h b/tools/testing/selftests/bpf/bpf_util.h
index d0811b3d6a6f..315a44fa32af 100644
--- a/tools/testing/selftests/bpf/bpf_util.h
+++ b/tools/testing/selftests/bpf/bpf_util.h
@@ -44,4 +44,8 @@ static inline unsigned int bpf_num_possible_cpus(void)
name[bpf_num_possible_cpus()]
#define bpf_percpu(name, cpu) name[(cpu)].v
+#ifndef ARRAY_SIZE
+# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+#endif
+
#endif /* __BPF_UTIL__ */