• Nicolas Pitre's avatar
    [ARM] 5295/1: make ZONE_DMA optional · 3bca103a
    Nicolas Pitre authored
    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: default avatarNicolas Pitre <nico@marvell.com>
    Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
Kconfig 31.3 KB