FPROP_FRAC_SHIFT   23 include/linux/flex_proportions.h #define FPROP_FRAC_BASE (1UL << FPROP_FRAC_SHIFT)
FPROP_FRAC_SHIFT  267 lib/flex_proportions.c 		    (((u64)denominator) * max_frac) >> FPROP_FRAC_SHIFT)