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authorNicolas Pitre <nico@cam.org>2008-10-07 20:14:55 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-10-09 21:29:46 +0100
commit3bca103a1e658d23737d20e1989139d9ca8973bf (patch)
tree672dcfde5a28cd0b2c4b06521f65413eab49750a /arch/arm/Kconfig
parent000b50259271c9c14f6e175795f5164e1d51d35b (diff)
[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>
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r--arch/arm/Kconfig4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index f5bf38b5f38d..ea52fae33290 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -148,7 +148,6 @@ config ARCH_MAY_HAVE_PC_FDC
config ZONE_DMA
bool
- default y
config GENERIC_ISA_DMA
bool
@@ -357,6 +356,7 @@ config ARCH_IXP4XX
select GENERIC_GPIO
select GENERIC_TIME
select GENERIC_CLOCKEVENTS
+ select ZONE_DMA if PCI
help
Support for Intel's IXP4XX (XScale) family of processors.
@@ -503,6 +503,7 @@ config ARCH_SHARK
bool "Shark"
select ISA
select ISA_DMA
+ select ZONE_DMA
select PCI
help
Support for the StrongARM based Digital DNARD machine, also known
@@ -524,6 +525,7 @@ config ARCH_DAVINCI
select GENERIC_CLOCKEVENTS
select GENERIC_GPIO
select HAVE_CLK
+ select ZONE_DMA
help
Support for TI's DaVinci platform.