Messages in this thread | | | Date | Tue, 22 May 2007 13:39:06 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: Define CONFIG_BOUNCE to avoid useless inclusion of bounce buffer logic. |
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On Mon, 21 May 2007 21:03:40 -0700 (PDT) Christoph Lameter <clameter@sgi.com> wrote:
> The bounce buffer logic is included on systems that do not need it. > If a system does not have zones like ZONE_DMA and ZONE_HIGHMEM that > can lead to the use of bounce buffers then there is no need to reserve > memory pools etc etc. This is true f.e. for SGI Altix.
> +config BOUNCE > + def_bool y > + depends on BLOCK && MMU && (ZONE_DMA || HIGHMEM) > +
AFAIK, ppc has only ZONE_DMA and it never needs bounce. Is this ok ?
-Kame
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