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| 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 /include/asm-generic/Kbuild.asm | |
| parent | asm-generic: rename termios.h, signal.h and mman.h (diff) | |
| download | linux-dev-c31ae4bb4a9fa4606a74c0a4fb61b74f804e861e.tar.xz linux-dev-c31ae4bb4a9fa4606a74c0a4fb61b74f804e861e.zip | |
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 '')
| -rw-r--r-- | include/asm-generic/Kbuild.asm | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-generic/Kbuild.asm b/include/asm-generic/Kbuild.asm index 70d185534b9d..290910e4ede4 100644 --- a/include/asm-generic/Kbuild.asm +++ b/include/asm-generic/Kbuild.asm @@ -9,6 +9,7 @@ unifdef-y += a.out.h endif unifdef-y += auxvec.h unifdef-y += byteorder.h +unifdef-y += bitsperlong.h unifdef-y += errno.h unifdef-y += fcntl.h unifdef-y += ioctl.h |