With sparsemem being introduced, we need a central place for new
memory-related .config options: mm/Kconfig. This allows us to
remove many of the duplicated arch-specific options.
The new option, CONFIG_FLATMEM, is there to enable us to detangle
NUMA and DISCONTIGMEM. This is a requirement for sparsemem
because sparsemem uses the NUMA code without the presence of
DISCONTIGMEM. The sparsemem patches use CONFIG_FLATMEM in generic
code, so this patch is a requirement before applying them.
Almost all places that used to do '#ifndef CONFIG_DISCONTIGMEM'
should use '#ifdef CONFIG_FLATMEM' instead.
Signed-off-by: Andy Whitcroft <[email protected]>
Signed-off-by: Dave Hansen <[email protected]>
---
memhotplug-dave/mm/Kconfig | 25 +++++++++++++++++++++++++
1 files changed, 25 insertions(+)
diff -puN mm/Kconfig~A6-mm-Kconfig mm/Kconfig
--- memhotplug/mm/Kconfig~A6-mm-Kconfig 2005-04-04 09:04:48.000000000 -0700
+++ memhotplug-dave/mm/Kconfig 2005-04-04 10:15:23.000000000 -0700
@@ -0,0 +1,25 @@
+choice
+ prompt "Memory model"
+ default FLATMEM
+ default SPARSEMEM if ARCH_SPARSEMEM_DEFAULT
+ default DISCONTIGMEM if ARCH_DISCONTIGMEM_DEFAULT
+
+config FLATMEM
+ bool "Flat Memory"
+ depends on !ARCH_DISCONTIGMEM_ENABLE || ARCH_FLATMEM_ENABLE
+ help
+ This option allows you to change some of the ways that
+ Linux manages its memory internally. Most users will
+ only have one option here: FLATMEM. This is normal
+ and a correct option.
+
+ If unsure, choose this option over any other.
+
+config DISCONTIGMEM
+ bool "Discontigious Memory"
+ depends on ARCH_DISCONTIGMEM_ENABLE
+ help
+ If unsure, choose "Flat Memory" over this option.
+
+endchoice
+
_
-
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