diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index 808998fe1..18d3321ef 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -1339,6 +1339,10 @@ void sched_init_numa(void) if (!sched_domains_numa_distance) return; + /* Includes NUMA identity node at level 0. */ + sched_domains_numa_distance[level++] = curr_distance; + sched_domains_numa_levels = level; + /* * O(nr_nodes^2) deduplicating selection sort -- in order to find the * unique distances in the node_distance() table. @@ -1386,8 +1390,7 @@ void sched_init_numa(void) return; /* - * 'level' contains the number of unique distances, excluding the - * identity distance node_distance(i,i). + * 'level' contains the number of unique distances * * The sched_domains_numa_distance[] array includes the actual distance * numbers. @@ -1448,10 +1451,19 @@ void sched_init_numa(void) for (i = 0; sched_domain_topology[i].mask; i++) tl[i] = sched_domain_topology[i]; + /* + * Add the NUMA identity distance, aka single NODE. + */ + tl[i++] = (struct sched_domain_topology_level){ + .mask = sd_numa_mask, + .numa_level = 0, + SD_INIT_NAME(NODE) + }; + /* * .. and append 'j' levels of NUMA goodness. */ - for (j = 0; j < level; i++, j++) { + for (j = 1; j < level; i++, j++) { tl[i] = (struct sched_domain_topology_level){ .mask = sd_numa_mask, .sd_flags = cpu_numa_flags,