Patch "sched/topology: Optimize build_group_mask()" has been added to the 4.11-stable tree

This is a note to let you know that I've just added the patch titled

sched/topology: Optimize build_group_mask()

to the 4.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
sched-topology-optimize-build_group_mask.patch
and it can be found in the queue-4.11 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Lauro Ramos Venancio <[email protected]>
Date: Thu, 20 Apr 2017 16:51:40 -0300
Subject: sched/topology: Optimize build_group_mask()

From: Lauro Ramos Venancio <[email protected]>

commit f32d782e31bf079f600dcec126ed117b0577e85c upstream.

The group mask is always used in intersection with the group CPUs. So, when building the group mask, we don't have to care about CPUs that are not part of the group.

---
 kernel/sched/topology.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -490,12 +490,12 @@ enum s_alloc {
  */
 static void build_group_mask(struct sched_domain *sd, struct sched_group *sg)
 {
-	const struct cpumask *span = sched_domain_span(sd);
+	const struct cpumask *sg_span = sched_group_cpus(sg);
 	struct sd_data *sdd = sd->private;
 	struct sched_domain *sibling;
 	int i;
 
-	for_each_cpu(i, span) {
+	for_each_cpu(i, sg_span) {
 		sibling = *per_cpu_ptr(sdd->sd, i);
 		if (!cpumask_test_cpu(i, sched_domain_span(sibling)))
 			continue;

Patches currently in stable-queue which might be from [email protected] are

queue-4.11/sched-topology-fix-building-of-overlapping-sched-groups.patch queue-4.11/sched-topology-fix-overlapping-sched_group_mask.patch queue-4.11/sched-fair-cpumask-export-for_each_cpu_wrap.patch queue-4.11/sched-topology-optimize-build_group_mask.patch