Linux kernel source tree https://git.amat.us/linux/atom/include/asm-generic/bitsperlong.h?h=v3.0.56 2009-06-11T19:02:14Z 2009-06-11T19:02:14Z Arnd Bergmann arnd@arndb.de 2009-05-13T22:56:25Z urn:sha1:c31ae4bb4a9fa4606a74c0a4fb61b74f804e861e 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>