active_sum 985 block/blk-iocost.c u32 active_sum = READ_ONCE(parent->child_active_sum); active_sum 991 block/blk-iocost.c if (!active_sum || !inuse_sum) active_sum 994 block/blk-iocost.c active_sum = max(active, active_sum); active_sum 995 block/blk-iocost.c hwa = hwa * active / active_sum; /* max 16bits * 10000 */