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ARM: 6206/1: CONFIG_FORCE_MAX_ZONEORDER update for SH-Mobile ARM

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Allow SH-Mobile ARM users to adjust FORCE_MAX_ZONEORDER.

The Kconfig entry is taken from SH and non-4K page size
stuff has been trimmed away. For now only SH-Mobile ARM is
allowed to change this variable, SA1111 configs are kept at
"9" and the rest at "11".

CONFIG_FORCE_MAX_ZONEORDER lets the user tweak the maximum
amount of physically contiguous memory that can be allocated
by the kernel.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Magnus Damm 2010-07-05 10:00:11 +01:00 committed by Russell King
parent 5aaf254409
commit c1b2d9704c
1 changed files with 16 additions and 5 deletions
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21
arch/arm/Kconfig
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@ -1031,11 +1031,6 @@ endmenu
source "arch/arm/common/Kconfig"
config FORCE_MAX_ZONEORDER
int
depends on SA1111
default "9"
menu "Bus support"
config ARM_AMBA
@ -1304,6 +1299,22 @@ config SPARSE_IRQ
source "mm/Kconfig"
config FORCE_MAX_ZONEORDER
int "Maximum zone order" if ARCH_SHMOBILE
range 11 64 if ARCH_SHMOBILE
default "9" if SA1111
default "11"
help
The kernel memory allocator divides physically contiguous memory
blocks into "zones", where each zone is a power of two number of
pages. This option selects the largest power of two that the kernel
keeps in the memory allocator. If you need to allocate very large
blocks of physically contiguous memory, then you may need to
increase this value.
This config option is actually maximum order plus one. For example,
a value of 11 means that the largest free memory block is 2^10 pages.
config LEDS
bool "Timer and CPU usage LEDs"
depends on ARCH_CDB89712 || ARCH_EBSA110 || \