net/sched: transition act_pedit to rcu and percpu stats

net/sched: transition act_pedit to rcu and percpu stats

[ Upstream commit 2dd76d1716aba71d7692e19d39595a45b70ccf3b ]

The software pedit action didn't get the same love as some of the
other actions and it's still using spinlocks and shared stats in the
datapath.
Transition the action to rcu and percpu stats as this improves the
action's performance dramatically on multiple cpu deployments.

Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Stable-dep-of: 66b12dc272c2 ("net/sched: act_pedit: fix action bind logic")
Signed-off-by: Sasha Levin <sashal@kernel.org>