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Date: Fri, 15 Oct 2010 00:24:55 -0400 From: Eric Paris <eparis@...hat.com> To: linux-kernel@...r.kernel.org Cc: akpm@...ux-foundation.org, jengelh@...ozas.de, davem@...emloft.net, andi@...stfloor.org Subject: [PATCH] types.h: define __aligned_u64 and expose to userspace We currently have a kernel internal type called aligned_u64 which aligns __u64's on 8 bytes boundaries even on systems which would normally align them on 4 byte boundaries. This patch creates a new type __aligned_u64 which does the same thing but which is exposed to userspace rather than being kernel internal. Based-on-patch-by: Andreas Gruenbacher <agruen@...e.de> Signed-off-by: Eric Paris <eparis@...hat.com> --- include/linux/types.h | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/include/linux/types.h b/include/linux/types.h index 01a082f..194e90b 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -178,6 +178,11 @@ typedef __u64 __bitwise __be64; typedef __u16 __bitwise __sum16; typedef __u32 __bitwise __wsum; +/* this is a special 64bit data type that is 8-byte aligned */ +#define __aligned_u64 __u64 __attribute__((aligned(8))) +#define __aligned_be64 __be64 __attribute__((aligned(8))) +#define __aligned_le64 __le64 __attribute__((aligned(8))) + #ifdef __KERNEL__ typedef unsigned __bitwise__ gfp_t; typedef unsigned __bitwise__ fmode_t; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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