From: Magnus Damm <magnus.damm@gmail.com>
To: linux-sh@vger.kernel.org
Subject: [PATCH 02/05] ARM: mach-shmobile: Add CONFIG_FORCE_MAX_ZONEORDER
Date: Wed, 12 May 2010 08:34:58 +0000 [thread overview]
Message-ID: <20100512083458.9395.98203.sendpatchset@t400s> (raw)
From: Magnus Damm <damm@opensource.se>
Allow SH-Mobile ARM to specify CONFIG_FORCE_MAX_ZONEORDER.
The Kconfig entry is taken from SH and non-4K page size
stuff has been trimmed away.
Signed-off-by: Magnus Damm <damm@opensource.se>
---
arch/arm/mach-shmobile/Kconfig | 15 +++++++++++++++
1 file changed, 15 insertions(+)
--- 0001/arch/arm/mach-shmobile/Kconfig
+++ work/arch/arm/mach-shmobile/Kconfig 2010-05-12 15:21:55.000000000 +0900
@@ -69,6 +69,21 @@ config MEMORY_SIZE
be overridden as normal by the 'mem=' argument on the kernel command
line.
+config FORCE_MAX_ZONEORDER
+ int "Maximum zone order"
+ range 11 64
+ 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.
+
endmenu
menu "Timer and clock configuration"
reply other threads:[~2010-05-12 8:34 UTC|newest]
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