Commit 49c159f5 authored by Lauro Ramos Venancio's avatar Lauro Ramos Venancio Committed by Greg Kroah-Hartman

sched/topology: Optimize build_group_mask()

commit f32d782e 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.
Signed-off-by: default avatarLauro Ramos Venancio <lvenanci@redhat.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: lwang@redhat.com
Cc: riel@redhat.com
Link: http://lkml.kernel.org/r/1492717903-5195-2-git-send-email-lvenanci@redhat.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent be032fd5
......@@ -5863,12 +5863,12 @@ 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;
......
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