summaryrefslogtreecommitdiffstats
path: root/arch/arm/Kconfig
diff options
context:
space:
mode:
authorMagnus Damm <magnus.damm@gmail.com>2010-07-05 10:00:11 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-07-09 14:41:35 +0100
commitc1b2d9704c77ddaec46d5d681e1360ac40268743 (patch)
tree036c7d36b1f245c918f016725c0a9f4dd0fbc673 /arch/arm/Kconfig
parent5aaf254409f8d58229107b59507a8235b715a960 (diff)
downloadop-kernel-dev-c1b2d9704c77ddaec46d5d681e1360ac40268743.zip
op-kernel-dev-c1b2d9704c77ddaec46d5d681e1360ac40268743.tar.gz
ARM: 6206/1: CONFIG_FORCE_MAX_ZONEORDER update for SH-Mobile ARM
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>
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r--arch/arm/Kconfig21
1 files changed, 16 insertions, 5 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index aa738aa..5f3a9da 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -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 || \
OpenPOWER on IntegriCloud