RE: [PATCH 3/3 v3] net/macb: Try to optimize struct macb layout
From: David Laight
Date: Wed May 15 2013 - 05:39:07 EST
> From: Havard Skinnemoen <havard@xxxxxxxxxxxxxx>
> Move the NAPI struct below that since it is used
> from the interrupt handler. This field is also marked as
> ___cacheline_aligned_in_smp.
Is that a good idea if the cache line size is 256 bytes?
Indeed is that ever sane - except for a few special structures
that really need it, and are guaranteed to be allocated
with that much alignment.
David
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/