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From:   Valentin Schneider <valentin.schneider@arm.com>
To:     linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc:     mingo@kernel.org, peterz@infradead.org, vincent.guittot@linaro.org,
        dietmar.eggemann@arm.com, morten.rasmussen@arm.com,
        Quentin Perret <qperret@google.com>
Subject: [PATCH v5 15/17] sched/topology: Mark SD_OVERLAP as SDF_NEEDS_GROUPS
Date:   Wed, 12 Aug 2020 13:52:58 +0100
Message-Id: <20200812125300.11889-16-valentin.schneider@arm.com>
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A sched_domain can only have overlapping sched_groups if it has more than
one group.

Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
---
 include/linux/sched/sd_flags.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/sched/sd_flags.h b/include/linux/sched/sd_flags.h
index f855f80f0052..021b909d3941 100644
--- a/include/linux/sched/sd_flags.h
+++ b/include/linux/sched/sd_flags.h
@@ -143,8 +143,9 @@ SD_FLAG(SD_PREFER_SIBLING, SDF_NEEDS_GROUPS)
  * sched_groups of this level overlap
  *
  * SHARED_PARENT: Set for all NUMA levels above NODE.
+ * NEEDS_GROUPS: Overlaps can only exist with more than one group.
  */
-SD_FLAG(SD_OVERLAP, SDF_SHARED_PARENT)
+SD_FLAG(SD_OVERLAP, SDF_SHARED_PARENT | SDF_NEEDS_GROUPS)
 
 /*
  * Cross-node balancing
-- 
2.27.0