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| author | Nicolas Pitre <nico@cam.org> | 2008-10-07 23:14:55 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-10-10 00:29:46 +0400 |
| commit | 3bca103a1e658d23737d20e1989139d9ca8973bf (patch) | |
| tree | 672dcfde5a28cd0b2c4b06521f65413eab49750a /arch/arm/Kconfig | |
| parent | 000b50259271c9c14f6e175795f5164e1d51d35b (diff) | |
| download | linux-3bca103a1e658d23737d20e1989139d9ca8973bf.tar.xz | |
[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/Kconfig | 4 |
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. |