sched_ext: Add scx_skip_subtree_pre()

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>

0 files changed, 0 insertions, 0 deletions