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 */