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| author | Dave Hansen <haveblue@us.ibm.com> | 2005-06-23 00:07:42 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-23 09:45:01 -0700 |
| commit | 3a9da7655d2d5b7f790a370328cf093440c80496 (patch) | |
| tree | 29fd39ee7dce0cfb4abc104a8492c22ff7f06111 /mm | |
| parent | 5b505b90b2d54e526cc8d123bdef3b98c9f0bbc6 (diff) | |
| download | lwn-3a9da7655d2d5b7f790a370328cf093440c80496.tar.gz lwn-3a9da7655d2d5b7f790a370328cf093440c80496.zip | |
[PATCH] create mm/Kconfig for arch-independent memory options
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 <apw@shadowen.org>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/Kconfig | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig new file mode 100644 index 000000000000..69caa9d8674e --- /dev/null +++ b/mm/Kconfig @@ -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 + |