rcu: Make synchronize_rcu() fast path update ->gp_seq counters

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This commit causes the early boot single-CPU synchronize_rcu() fastpath to
update the rcu_state and rcu_node structures' ->gp_seq and ->gp_seq_needed
counters.  This will allow the full-state polled grace-period APIs to
detect all normal grace periods without the need to track the special
combined polling-only counter, which is a step towards removing the
->rgos_polled field from the rcu_gp_oldstate, thereby reducing its size
by one third.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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This commit is contained in:

Paul E. McKenney 2022-08-04 17:28:01 -07:00

parent 5f11bad6b7

commit 910e12092e

1 changed files with 26 additions and 13 deletions

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kernel/rcu/tree.c

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