tree 586595f3aa88196669cbff3b6580353135c6e335
parent 56e5d1ca183d8616fab377d7d466c244b4dbb3b9
author Eric Dumazet <edumazet@google.com> 1436185089 -0700
committer David S. Miller <davem@davemloft.net> 1436388642 -0700

net_sched: act_mirred: remove spinlock in fast path

Like act_gact, act_mirred can be lockless in packet processing

1) Use percpu stats
2) update lastuse only every clock tick to avoid false sharing
3) use rcu to protect tcfm_dev
4) Remove spinlock usage, as it is no longer needed.

Next step : add multi queue capability to ifb device

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>