diff --git a/tools/testing/memblock/internal.h b/tools/testing/memblock/internal.h
index c2a492c05e0c6..fdb7f5db73082 100644
--- a/tools/testing/memblock/internal.h
+++ b/tools/testing/memblock/internal.h
@@ -9,6 +9,10 @@
 static int memblock_debug = 1;
 #endif
 
+#define pr_warn_ratelimited(fmt, ...)    printf(fmt, ##__VA_ARGS__)
+
+bool mirrored_kernelcore = false;
+
 struct page {};
 
 void memblock_free_pages(struct page *page, unsigned long pfn,