diff options
| author | Paul Mackerras <paulus@samba.org> | 2007-12-21 22:21:08 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-12-21 22:21:08 +1100 |
| commit | c2a7dcad9f0d92d7a96e735abb8bec7b9c621536 (patch) | |
| tree | bf9b20fdd5ab07e5b0e4e0b95c6a3dbab1005cb9 /mm/Kconfig | |
| parent | 373a6da165ac3012a74fd072da340eabca55d031 (diff) | |
| parent | ea67db4cdbbf7f4e74150e71da0984e25121f500 (diff) | |
Merge branch 'linux-2.6'
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index c070ec0c15b..9ef97417a0b 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -112,18 +112,17 @@ config SPARSEMEM_EXTREME def_bool y depends on SPARSEMEM && !SPARSEMEM_STATIC -# -# SPARSEMEM_VMEMMAP uses a virtually mapped mem_map to optimise pfn_to_page -# and page_to_pfn. The most efficient option where kernel virtual space is -# not under pressure. -# config SPARSEMEM_VMEMMAP_ENABLE def_bool n config SPARSEMEM_VMEMMAP - bool - depends on SPARSEMEM - default y if (SPARSEMEM_VMEMMAP_ENABLE) + bool "Sparse Memory virtual memmap" + depends on SPARSEMEM && SPARSEMEM_VMEMMAP_ENABLE + default y + help + SPARSEMEM_VMEMMAP uses a virtually mapped memmap to optimise + pfn_to_page and page_to_pfn operations. This is the most + efficient option when sufficient kernel resources are available. # eventually, we can have this option just 'select SPARSEMEM' config MEMORY_HOTPLUG |