#ifndef __ASM_GENERIC_BITS_PER_LONG
  #define __ASM_GENERIC_BITS_PER_LONG
  
  /*
   * There seems to be no way of detecting this automatically from user
   * space, so 64 bit architectures should override this in their
   * bitsperlong.h. In particular, an architecture that supports
   * both 32 and 64 bit user space must not rely on CONFIG_64BIT
   * to decide it, but rather check a compiler provided macro.
   */
  #ifndef __BITS_PER_LONG
  #define __BITS_PER_LONG 32
  #endif
  
  #ifdef __KERNEL__
  
  #ifdef CONFIG_64BIT
  #define BITS_PER_LONG 64
  #else
  #define BITS_PER_LONG 32
  #endif /* CONFIG_64BIT */
  
  /*
   * FIXME: The check currently breaks x86-64 build, so it's
   * temporarily disabled. Please fix x86-64 and reenable
   */
  #if 0 && BITS_PER_LONG != __BITS_PER_LONG
  #error Inconsistent word size. Check asm/bitsperlong.h
  #endif
  
  #endif /* __KERNEL__ */
  #endif /* __ASM_GENERIC_BITS_PER_LONG */