diff options
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index cd379936cac..4e9937ac352 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -89,3 +89,25 @@ config NEED_MULTIPLE_NODES config HAVE_MEMORY_PRESENT def_bool y depends on ARCH_HAVE_MEMORY_PRESENT || SPARSEMEM + +# +# SPARSEMEM_EXTREME (which is the default) does some bootmem +# allocations when memory_present() is called. If this can not +# be done on your architecture, select this option. However, +# statically allocating the mem_section[] array can potentially +# consume vast quantities of .bss, so be careful. +# +# This option will also potentially produce smaller runtime code +# with gcc 3.4 and later. +# +config SPARSEMEM_STATIC + def_bool n + +# +# Architectecture platforms which require a two level mem_section in SPARSEMEM +# must select this option. This is usually for architecture platforms with +# an extremely sparse physical address space. +# +config SPARSEMEM_EXTREME + def_bool y + depends on SPARSEMEM && !SPARSEMEM_STATIC |