From: "H. Peter Anvin" <[email protected]> commit 2fc016c5bd8aad2e201cdf71b9fb4573f94775bd upstream.
Add macros for single bit definitions of a specific type. These are similar to the BIT() macro that already exists, but with a few exceptions: 1. The namespace is such that they can be used in uapi definitions. 2. The type is set with the _AC() macro to allow it to be used in assembly. 3. The type is explicitly specified to be UL or ULL. Signed-off-by: H. Peter Anvin <[email protected]> Link: http://lkml.kernel.org/n/[email protected] [wt: backported to 3.10 only to keep next patch clean] Signed-off-by: Willy Tarreau <[email protected]> --- include/uapi/linux/const.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/uapi/linux/const.h b/include/uapi/linux/const.h index c22c707..c872bfd 100644 --- a/include/uapi/linux/const.h +++ b/include/uapi/linux/const.h @@ -21,4 +21,7 @@ #define _AT(T,X) ((T)(X)) #endif +#define _BITUL(x) (_AC(1,UL) << (x)) +#define _BITULL(x) (_AC(1,ULL) << (x)) + #endif /* !(_LINUX_CONST_H) */ -- 2.8.0.rc2.1.gbe9624a
