sched_ext: Add scx_skip_subtree_pre()

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Factor the sibling/ancestor portion of scx_next_descendant_pre() out as
scx_skip_subtree_pre(), a pre-order walk primitive that skips @pos's
subtree, and call it from scx_next_descendant_pre(). Same locking rules as
the existing primitive.

Used in a follow-up to fast-skip subtrees that have nothing to do during a
descendant walk.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>

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Tejun Heo 2026-07-13 22:18:43 -10:00

parent 70f8b17853

commit bbda59d853

2 changed files with 30 additions and 9 deletions

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37

kernel/sched/ext/sub.c

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2

kernel/sched/ext/sub.h

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