From c1b2d9704c77ddaec46d5d681e1360ac40268743 Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Mon, 5 Jul 2010 10:00:11 +0100 Subject: [PATCH] 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 Signed-off-by: Russell King --- arch/arm/Kconfig | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index aa738aa70c78..5f3a9da6da07 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 || \