linux-kernel - [PATCH 2/2] kasan, module: move MODULE_ALIGN macro into <linux/moduleloader.h>

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Message-id: <1425049816-11385-2-git-send-email-a.ryabinin@samsung.com>
Date:	Fri, 27 Feb 2015 18:10:16 +0300
From:	Andrey Ryabinin <a.ryabinin@...sung.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Andrey Ryabinin <a.ryabinin@...sung.com>,
	Dmitry Vyukov <dvyukov@...gle.com>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: [PATCH 2/2] kasan,
 module: move MODULE_ALIGN macro into <linux/moduleloader.h>

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@...sung.com>
Cc: Dmitry Vyukov <dvyukov@...gle.com>
Cc: Rusty Russell <rusty@...tcorp.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

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