sched/topology: Remove redundant cpumask_and() in init_overlap_sched_…

…group() mask is built in build_balance_mask() by for_each_cpu(i, sg_span), so it must be a subset of sched_group_span(sg). So the cpumask_and() call is redundant - remove it. [ mingo: Adjusted the changelog a bit. ] Signed-off-by: Barry Song <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Reviewed-by: Valentin Schneider <[email protected]> Link: https://lore.kernel.org/r/[email protected]
caleberi · Mar 25, 2021 · 0a2b65c · 0a2b65c
1 parent c4681f3
commit 0a2b65c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
@@ -934,7 +934,7 @@ static void init_overlap_sched_group(struct sched_domain *sd,
 	int cpu;
 
 	build_balance_mask(sd, sg, mask);
-	cpu = cpumask_first_and(sched_group_span(sg), mask);
+	cpu = cpumask_first(mask);
 
 	sg->sgc = *per_cpu_ptr(sdd->sgc, cpu);
 	if (atomic_inc_return(&sg->sgc->ref) == 1)