linux-kernel - Re: [PATCH 1/2] ARM: kirkwood: proper retain MAC address workaround on DT ethernet

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Message-Id: <20130527.151744.1526437556583356156.davem@davemloft.net>
Date:	Mon, 27 May 2013 15:17:44 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	benh@...nel.crashing.org
Cc:	arnd@...db.de, linuxppc-dev@...ts.ozlabs.org,
	sebastian.hesselbarth@...il.com, andrew@...n.ch,
	jason@...edaemon.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, buytenh@...tstofly.org,
	grant.likely@...aro.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/2] ARM: kirkwood: proper retain MAC address
 workaround on DT ethernet

From: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Date: Tue, 28 May 2013 07:50:06 +1000

> On Mon, 2013-05-27 at 14:47 +0200, Arnd Bergmann wrote:
>> On Monday 27 May 2013 21:50:04 Benjamin Herrenschmidt wrote:
>> > However, that wouldn't help much with the allocation/leak problem,
>> > though at least it would be easier to use. It could also *try* to re-use
>> > the current allocation if the new content is of smaller or equal size.
>> 
>> I thought that dtc tried to aggressively save space by folding identical
>> strings. If you tried to reuse a property that had its contents shared
>> with another one, you would get interesting results I guess.
> 
> It used to be only property names, unless that has changed in recent
> dtc. But that's a good point, we probably want a flag in struct property
> like we have for nodes, indicating whether it comes from the original
> fdt data pool or not.

This is similar to what the "OF_IS_DYNAMIC()" thing on sparc
indicates.
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