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From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] net: force dst_default_metrics to const section
Date: Tue, 07 Aug 2012 14:55:33 -0700 (PDT)
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From: Ben Hutchings <bhutchings@solarflare.com>
Date: Tue, 7 Aug 2012 21:15:27 +0100

> Some day the compiler may be smart enough to ignore the different
> between explicit and implicit zero-initialisation, and put it back in
> BSS.  Declaring this __cache_aligned_in_smp might be a better option.

I'm surprised it doesn't already do this.

It definitely puts scalar explicit zero initializers into the BSS.