BITOFF_CAL 12 arch/powerpc/include/asm/cmpxchg.h #define BITOFF_CAL(size, off) ((sizeof(u32) - size - off) * BITS_PER_BYTE) BITOFF_CAL 14 arch/powerpc/include/asm/cmpxchg.h #define BITOFF_CAL(size, off) (off * BITS_PER_BYTE)