netdev - Re: [RCU PATCH 06/14] net: sched: fw use RCU

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Message-ID: <20140314153810.GX21124@linux.vnet.ibm.com>
Date:	Fri, 14 Mar 2014 08:38:11 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	John Fastabend <john.fastabend@...il.com>,
	xiyou.wangcong@...il.com, jhs@...atatu.com, netdev@...r.kernel.org,
	davem@...emloft.net
Subject: Re: [RCU PATCH 06/14] net: sched: fw use RCU

On Fri, Mar 14, 2014 at 06:46:38AM -0700, Eric Dumazet wrote:
> On Fri, 2014-03-14 at 06:28 -0700, Paul E. McKenney wrote:
> 
> > Now I just need to figure out why it -causes- a BUILD_BUG_ON for the
> > cris and m68k architectures in Fengguang Wu's testing...
> 
> Right, they don't necessarily align pointers ;)
> 
> alignof(void *) ?

It complained about the size rather than the alignment, but it would
certainly make sense to constrain the rcu_head structure's alignment,
now that you mention it.  I will do that and see if it helps.  ;-)

Thank you for the tip!

							Thanx, Paul

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