# Re: \[PATCH v3 net-next 7/7\] net\_sched: act\_mirred: remove spinlock in fast path

- From: Alexei Starovoitov \<hidden\>
- Date: 2015-07-06 18:30:00 
- List: netdev
- Page: https://ratatoskr.run/netdev/2015/07/10991180
- Thread: https://ratatoskr.run/netdev/2015/07/10991135/t.md

```text
On 7/6/15 5:18 AM, Eric Dumazet wrote:
> 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<redacted>

Nice!
Acked-by: Alexei Starovoitov <redacted>
```