sched/topology: Mark SD_PREFER_SIBLING as SDF_NEEDS_GROUPS

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SD_PREFER_SIBLING is currently considered in sd_parent_degenerate() but not
in sd_degenerate(). It too hinges on load balancing, and thus won't have
any effect when set on a domain with a single group. Add it to
SD_DEGENERATE_GROUPS_MASK.

Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: https://lore.kernel.org/r/20200817113003.20802-12-valentin.schneider@arm.com

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Valentin Schneider 2020-08-17 12:29:57 +01:00 • committed by Ingo Molnar

parent c200191d4c

commit 3a6712c768

2 changed files with 4 additions and 2 deletions

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4

include/linux/sched/sd_flags.h

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2

kernel/sched/topology.c

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