netdev - Re: [PATCH] net: force dst_default

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Message-ID: <1344380200.28967.207.camel@edumazet-glaptop>
Date:	Wed, 08 Aug 2012 00:56:40 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] net: force dst_default_metrics to const section

On Tue, 2012-08-07 at 23:44 +0100, Ben Hutchings wrote:

> Any consideration of implementation details like BSS and cache line
> sharing is already outside of 'plain C'.  And you don't have to 'mess
> with all arches'; just look at what <linux/init.h> and <linux/module.h>
> do.

"const" is the clean and portable way to express my needs. No magic
section.

All is self-contained in the definition of the metrics, with a nice
comment.

All const are naturally shared by all cpus, without adding extra cache
line boundaries.

Please feel free to send another version, but I wont spend more time
myself.

Thanks


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