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Groups > linux.kernel > #1632893
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 08/14] sched/topology: Move comment about asymmetric node setups |
| Date | 2017-04-28 15:40 +0200 |
| Message-ID | <tBehR-7VW-49@gated-at.bofh.it> (permalink) |
| References | <tBehP-7VW-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Cc: lwang@redhat.com
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: riel@redhat.com
Signed-off-by: Lauro Ramos Venancio <lvenanci@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1492717903-5195-4-git-send-email-lvenanci@redhat.com
---
kernel/sched/topology.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
--- a/kernel/sched/topology.c
+++ b/kernel/sched/topology.c
@@ -495,14 +495,6 @@ enum s_alloc {
/*
* Build an iteration mask that can exclude certain CPUs from the upwards
* domain traversal.
- *
- * Asymmetric node setups can result in situations where the domain tree is of
- * unequal depth, make sure to skip domains that already cover the entire
- * range.
- *
- * In that case build_sched_domains() will have terminated the iteration early
- * and our sibling sd spans will be empty. Domains should always include the
- * CPU they're built on, so check that.
*/
static void build_group_mask(struct sched_domain *sd, struct sched_group *sg)
{
@@ -590,7 +582,16 @@ build_overlap_sched_groups(struct sched_
sibling = *per_cpu_ptr(sdd->sd, i);
- /* See the comment near build_group_mask(). */
+ /*
+ * Asymmetric node setups can result in situations where the
+ * domain tree is of unequal depth, make sure to skip domains
+ * that already cover the entire range.
+ *
+ * In that case build_sched_domains() will have terminated the
+ * iteration early and our sibling sd spans will be empty.
+ * Domains should always include the CPU they're built on, so
+ * check that.
+ */
if (!cpumask_test_cpu(i, sched_domain_span(sibling)))
continue;
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[PATCH 08/14] sched/topology: Move comment about asymmetric node setups Peter Zijlstra <peterz@infradead.org> - 2017-04-28 15:40 +0200 Re: [PATCH 08/14] sched/topology: Move comment about asymmetric node setups Rik van Riel <riel@redhat.com> - 2017-05-02 03:10 +0200
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