netdev - Re: [PATCH] net: use synchronize_rcu

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Date:	Tue, 24 May 2011 12:56:44 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] net: use synchronize_rcu_expedited()

On Tue, May 24, 2011 at 09:44:45PM +0200, Eric Dumazet wrote:
> Le mardi 24 mai 2011 à 12:24 -0700, Paul E. McKenney a écrit :
> 
> > Might make sense, though most of the gains would need to come from
> > kicking the grace-period machinery hard in order to make it go faster.
> > 
> > Interesting -- I will give this some thought.
> 
> I am working on a final step, using a workqueue so that the
> rcu_barrier() is not done under RTNL, so it wont be anymore a blocking
> point to dismantle hundred of devices per second...

OK, I will keep rcu_barrier_expedited() on the "might be useful list",
but will keep to the current plan: finishing up rough edges on RCU
priority boosting, merging SRCU into TREE_RCU and TINY_RCU, and so forth.

But let me know if you do need it.

							Thanx, Paul
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