• Arnd Bergmann's avatar
    asm-generic: introduce asm/bitsperlong.h · c31ae4bb
    Arnd Bergmann authored
    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: default avatarRemis Lima Baima <remis.developer@googlemail.com>
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    c31ae4bb
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