div64_u64          10 include/linux/math64.h #define div64_ul(x, y)   div64_u64((x), (y))
div64_u64          79 include/linux/math64.h #ifndef div64_u64
div64_u64          80 include/linux/math64.h extern u64 div64_u64(u64 dividend, u64 divisor);