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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>
26 lines
649 B
Plaintext
26 lines
649 B
Plaintext
choice
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prompt "Memory model"
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default FLATMEM
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default SPARSEMEM if ARCH_SPARSEMEM_DEFAULT
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default DISCONTIGMEM if ARCH_DISCONTIGMEM_DEFAULT
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config FLATMEM
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bool "Flat Memory"
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depends on !ARCH_DISCONTIGMEM_ENABLE || ARCH_FLATMEM_ENABLE
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help
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This option allows you to change some of the ways that
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Linux manages its memory internally. Most users will
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only have one option here: FLATMEM. This is normal
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and a correct option.
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If unsure, choose this option over any other.
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config DISCONTIGMEM
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bool "Discontigious Memory"
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depends on ARCH_DISCONTIGMEM_ENABLE
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help
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If unsure, choose "Flat Memory" over this option.
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endchoice
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