2 files changed, 25 insertions, 0 deletions

diff --git a/include/linux/kmemcheck.h b/include/linux/kmemcheck.h
new file mode 100644
index 000000000000..39480c91b2f9
--- /dev/null
+++ b/include/linux/kmemcheck.h
@@ -0,0 +1,17 @@
+#ifndef LINUX_KMEMCHECK_H
+#define LINUX_KMEMCHECK_H
+
+#include <linux/mm_types.h>
+#include <linux/types.h>
+
+#ifdef CONFIG_KMEMCHECK
+extern int kmemcheck_enabled;
+
+int kmemcheck_show_addr(unsigned long address);
+int kmemcheck_hide_addr(unsigned long address);
+#else
+#define kmemcheck_enabled 0
+
+#endif /* CONFIG_KMEMCHECK */
+
+#endif /* LINUX_KMEMCHECK_H */
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 0e80e26ecf21..0042090a4d70 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -98,6 +98,14 @@ struct page {
 #ifdef CONFIG_WANT_PAGE_DEBUG_FLAGS
         unsigned long debug_flags;      /* Use atomic bitops on this */
 #endif
+
+#ifdef CONFIG_KMEMCHECK
+        /*
+         * kmemcheck wants to track the status of each byte in a page; this
+         * is a pointer to such a status block. NULL if not tracked.
+         */
+        void *shadow;
+#endif
 };
 
 /*