[PATCH 2/2] kasan, module: move MODULE_ALIGN macro into

Andrey Ryabinin
2015-02-27T15:11:04Z

include/linux/moduleloader.h is more suitable place for this macro.
Also change alignment to PAGE_SIZE for CONFIG_KASAN=n as such
alignment already assumed in several places.

Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
---
include/linux/kasan.h | 4 ----
include/linux/moduleloader.h | 8 ++++++++
2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/include/linux/kasan.h b/include/linux/kasan.h
index 5fa48a2..5bb0744 100644
--- a/include/linux/kasan.h
+++ b/include/linux/kasan.h
@@ -50,15 +50,11 @@ void kasan_krealloc(const void *object, size_t new_size);
void kasan_slab_alloc(struct kmem_cache *s, void *object);
void kasan_slab_free(struct kmem_cache *s, void *object);

-#define MODULE_ALIGN (PAGE_SIZE << KASAN_SHADOW_SCALE_SHIFT)
-
int kasan_module_alloc(void *addr, size_t size);
void kasan_free_shadow(const struct vm_struct *vm);

#else /* CONFIG_KASAN */

-#define MODULE_ALIGN 1
-
static inline void kasan_unpoison_shadow(const void *address, size_t size) {}

static inline void kasan_enable_current(void) {}
diff --git a/include/linux/moduleloader.h b/include/linux/moduleloader.h
index f755626..4d0cb9b 100644
--- a/include/linux/moduleloader.h
+++ b/include/linux/moduleloader.h
@@ -84,4 +84,12 @@ void module_arch_cleanup(struct module *mod);

/* Any cleanup before freeing mod->module_init */
void module_arch_freeing_init(struct module *mod);
+
+#ifdef CONFIG_KASAN
+#include <linux/kasan.h>
+#define MODULE_ALIGN (PAGE_SIZE << KASAN_SHADOW_SCALE_SHIFT)
+#else
+#define MODULE_ALIGN PAGE_SIZE
+#endif
+
#endif
--
2.3.0