1 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/kmsan.h b/include/linux/kmsan.h
index 354aee6f7b1a..e00de976ee43 100644
--- a/include/linux/kmsan.h
+++ b/include/linux/kmsan.h
@@ -32,6 +32,28 @@ void kmsan_task_create(struct task_struct *task);
 void kmsan_task_exit(struct task_struct *task);
 
 /**
+ * kmsan_init_shadow() - Initialize KMSAN shadow at boot time.
+ *
+ * Allocate and initialize KMSAN metadata for early allocations.
+ */
+void __init kmsan_init_shadow(void);
+
+/**
+ * kmsan_init_runtime() - Initialize KMSAN state and enable KMSAN.
+ */
+void __init kmsan_init_runtime(void);
+
+/**
+ * kmsan_memblock_free_pages() - handle freeing of memblock pages.
+ * @page:	struct page to free.
+ * @order:	order of @page.
+ *
+ * Freed pages are either returned to buddy allocator or held back to be used
+ * as metadata pages.
+ */
+bool __init kmsan_memblock_free_pages(struct page *page, unsigned int order);
+
+/**
  * kmsan_alloc_page() - Notify KMSAN about an alloc_pages() call.
  * @page:  struct page pointer returned by alloc_pages().
  * @order: order of allocated struct page.
@@ -152,6 +174,20 @@ void kmsan_iounmap_page_range(unsigned long start, unsigned long end);
 
 #else
 
+static inline void kmsan_init_shadow(void)
+{
+}
+
+static inline void kmsan_init_runtime(void)
+{
+}
+
+static inline bool kmsan_memblock_free_pages(struct page *page,
+					     unsigned int order)
+{
+	return true;
+}
+
 static inline void kmsan_task_create(struct task_struct *task)
 {
 }