diff options
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index c070ec0c15bf..0016ebd4dcba 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 @@ -188,7 +187,7 @@ config BOUNCE config NR_QUICK int depends on QUICKLIST - default "2" if (SUPERH && !SUPERH64) + default "2" if SUPERH default "1" config VIRT_TO_BUS |