On 20/05/21 21:14, Srikar Dronamraju wrote:
> +int arch_populate_distance_map(unsigned long *distance_map)
> +{
> + int i;
> + int distance = LOCAL_DISTANCE;
> +
> + bitmap_set(distance_map, distance, 1);
> +
> + if (!form1_affinity) {
> + bitmap_set(distance_map, REMOTE_DISTANCE, 1);
> + return 0;
> + }
> +
> + for (i = 0; i < distance_ref_points_depth; i++) {
> + distance *= 2;
> + bitmap_set(distance_map, distance, 1);
Do you have guarantees your distance values will always be in the form of
LOCAL_DISTANCE * 2^i
because that certainly isn't true for x86/arm64.
> + }
> + return 0;
> +}
> +
> /*
> * Returns nid in the range [0..nr_node_ids], or -1 if no useful NUMA
> * info is found.
> --
> 2.27.0
