diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2009-05-13 22:56:25 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@klappe2.(none)> | 2009-06-11 21:02:14 +0200 |
| commit | c31ae4bb4a9fa4606a74c0a4fb61b74f804e861e (patch) | |
| tree | 7694b1a05bc1ac660ac26eb9997200556ccd3933 /arch/ia64 | |
| parent | 63b852a6b67d0820d388b0ecd0da83ccb4048b8d (diff) | |
asm-generic: introduce asm/bitsperlong.h
This provides a reliable way for asm-generic/types.h and other
files to find out if it is running on a 32 or 64 bit platform.
We cannot use CONFIG_64BIT for this in headers that are included
from user space because CONFIG symbols are not available there.
We also cannot do it inside of asm/types.h because some headers
need the word size but cannot include types.h.
The solution is to introduce a new header <asm/bitsperlong.h>
that defines both __BITS_PER_LONG for user space and
BITS_PER_LONG for usage in the kernel. The asm-generic
version falls back to 32 bit unless the architecture overrides
it, which I did for all 64 bit platforms.
Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/include/asm/bitsperlong.h | 8 | ||||
| -rw-r--r-- | arch/ia64/include/asm/types.h | 7 |
2 files changed, 8 insertions, 7 deletions
diff --git a/arch/ia64/include/asm/bitsperlong.h b/arch/ia64/include/asm/bitsperlong.h new file mode 100644 index 000000000000..ec4db3c970b7 --- /dev/null +++ b/arch/ia64/include/asm/bitsperlong.h @@ -0,0 +1,8 @@ +#ifndef __ASM_IA64_BITSPERLONG_H +#define __ASM_IA64_BITSPERLONG_H + +#define __BITS_PER_LONG 64 + +#include <asm-generic/bitsperlong.h> + +#endif /* __ASM_IA64_BITSPERLONG_H */ diff --git a/arch/ia64/include/asm/types.h b/arch/ia64/include/asm/types.h index e36b3716e718..fbf1ed3b44ce 100644 --- a/arch/ia64/include/asm/types.h +++ b/arch/ia64/include/asm/types.h @@ -19,10 +19,6 @@ # define __IA64_UL(x) (x) # define __IA64_UL_CONST(x) x -# ifdef __KERNEL__ -# define BITS_PER_LONG 64 -# endif - #else # define __IA64_UL(x) ((unsigned long)(x)) # define __IA64_UL_CONST(x) x##UL @@ -34,10 +30,7 @@ typedef unsigned int umode_t; */ # ifdef __KERNEL__ -#define BITS_PER_LONG 64 - /* DMA addresses are 64-bits wide, in general. */ - typedef u64 dma_addr_t; # endif /* __KERNEL__ */ |