tree 672dcfde5a28cd0b2c4b06521f65413eab49750a
parent 000b50259271c9c14f6e175795f5164e1d51d35b
author Nicolas Pitre <nico@cam.org> 1223406895 +0100
committer Russell King <rmk+kernel@arm.linux.org.uk> 1223584186 +0100

[ARM] 5295/1: make ZONE_DMA optional

Most ARM machines don't need a special "DMA" memory zone, and
when configured out, the kernel becomes a bit smaller:

|   text    data     bss     dec     hex filename
|3826182  102384  111700 4040266  3da64a vmlinux
|3823593  101616  111700 4036909  3d992d vmlinux.nodmazone

This is because the system now has only one zone total which effect is
to optimize away many conditionals in page allocation paths.

So let's configure this zone only on machines that need split zones.

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>