Subject: Re: [RFC PATCH 00/12] RCU'ify the net:sched classifier chains

From: Jamal Hadi Salim <[email-masked]>
Date: Sun, 12 Jan 2014 09:18:06 -0500

On 01/12/14 08:57, Jamal Hadi Salim wrote:

> I looked and here's a general question:
> Does even using RCU make any sense here? What we have
> is a lot of updates and very very little reads (reads essentially
> are done from the control side; the data path is is all about updates).
>
> I am not sure if RCU is a win in such a case - it could make things
> worse. At least that used to be the Truth(tm) many moons back.
> Is that not the case anymore?
>

Never mind.
You are not trying to make stats rcu - rather the list
of filters and actions (which is read mostly from data path).
Looking at the u32 piece - i think this is in the right
direction. Good stuff John!

cheers,
jamal