1 files changed, 12 insertions, 0 deletions

diff --git a/mm/internal.h b/mm/internal.h
index 7a4a2885dc8e..5d17f3efac41 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -98,4 +98,16 @@ static inline void mminit_verify_page_links(struct page *page,
 {
 }
 #endif /* CONFIG_DEBUG_MEMORY_INIT */
+
+/* mminit_validate_memmodel_limits is independent of CONFIG_DEBUG_MEMORY_INIT */
+#if defined(CONFIG_SPARSEMEM)
+extern void mminit_validate_memmodel_limits(unsigned long *start_pfn,
+                                unsigned long *end_pfn);
+#else
+static inline void mminit_validate_memmodel_limits(unsigned long *start_pfn,
+                                unsigned long *end_pfn)
+{
+}
+#endif /* CONFIG_SPARSEMEM */
+
 #endif