rcu: Remove unused expedited_need_qs field from rcu_state

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The ->expedited_need_qs counter was part of the old expedited
grace-period machinery that spun waiting for each CPU to check in.
The current implementation instead tracks holdout CPUs via the
rcu_node structures' ->expmask fields and waits on the ->exp_wq[]
wait queues, so nothing reads or writes ->expedited_need_qs any
longer.

Remove the field to avoid wasting space in rcu_state and to keep
readers of the expedited code from searching for nonexistent users.

Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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Joel Fernandes 2026-07-18 13:15:32 -04:00 • committed by Paul E. McKenney

parent a050e671d3

commit 4137d69124

1 changed files with 0 additions and 1 deletions

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kernel/rcu/tree.h

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