include/asm-generic/bitsperlong.h

   1 #ifndef __ASM_GENERIC_BITS_PER_LONG
   2 #define __ASM_GENERIC_BITS_PER_LONG
   3
   4 /*
   5  * There seems to be no way of detecting this automatically from user
   6  * space, so 64 bit architectures should override this in their
   7  * bitsperlong.h. In particular, an architecture that supports
   8  * both 32 and 64 bit user space must not rely on CONFIG_64BIT
   9  * to decide it, but rather check a compiler provided macro.
  10  */
  11 #ifndef __BITS_PER_LONG
  12 #define __BITS_PER_LONG 32
  13 #endif
  14
  15 #ifdef __KERNEL__
  16
  17 #ifdef CONFIG_64BIT
  18 #define BITS_PER_LONG 64
  19 #else
  20 #define BITS_PER_LONG 32
  21 #endif /* CONFIG_64BIT */
  22
  23 /*
  24  * FIXME: The check currently breaks x86-64 build, so it's
  25  * temporarily disabled. Please fix x86-64 and reenable
  26  */
  27 #if 0 && BITS_PER_LONG != __BITS_PER_LONG
  28 #error Inconsistent word size. Check asm/bitsperlong.h
  29 #endif
  30
  31 #endif /* __KERNEL__ */
  32 #endif /* __ASM_GENERIC_BITS_PER_LONG */