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-rw-r--r--include/linux/mm.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index bb242ad810eb..f88f0eabcc5e 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2700,6 +2700,30 @@ static inline void kernel_poison_pages(struct page *page, int numpages,
int enable) { }
#endif
+#ifdef CONFIG_INIT_ON_ALLOC_DEFAULT_ON
+DECLARE_STATIC_KEY_TRUE(init_on_alloc);
+#else
+DECLARE_STATIC_KEY_FALSE(init_on_alloc);
+#endif
+static inline bool want_init_on_alloc(gfp_t flags)
+{
+ if (static_branch_unlikely(&init_on_alloc) &&
+ !page_poisoning_enabled())
+ return true;
+ return flags & __GFP_ZERO;
+}
+
+#ifdef CONFIG_INIT_ON_FREE_DEFAULT_ON
+DECLARE_STATIC_KEY_TRUE(init_on_free);
+#else
+DECLARE_STATIC_KEY_FALSE(init_on_free);
+#endif
+static inline bool want_init_on_free(void)
+{
+ return static_branch_unlikely(&init_on_free) &&
+ !page_poisoning_enabled();
+}
+
#ifdef CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT
DECLARE_STATIC_KEY_TRUE(_debug_pagealloc_enabled);
#else