X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=mm%2FKconfig;h=0016ebd4dcbac755450579197d317738727816a8;hb=cc38108e1ba7f3b9e12b82d0236fa3730c2e0439;hp=086af703da43345ecf47d6168ca7b84f5616d050;hpb=b91cba52e9b7b3f1c0037908a192d93a869ca9e5;p=safe%2Fjmp%2Flinux-2.6 diff --git a/mm/Kconfig b/mm/Kconfig index 086af70..0016ebd 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -37,7 +37,7 @@ config DISCONTIGMEM_MANUAL in their physical address spaces, and this option provides more efficient handling of these holes. However, the vast majority of hardware has quite flat address spaces, and - can have degraded performance from extra overhead that + can have degraded performance from the extra overhead that this option imposes. Many NUMA configurations will have this as the only option. @@ -112,20 +112,37 @@ config SPARSEMEM_EXTREME def_bool y depends on SPARSEMEM && !SPARSEMEM_STATIC +config SPARSEMEM_VMEMMAP_ENABLE + def_bool n + +config SPARSEMEM_VMEMMAP + 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 bool "Allow for memory hot-add" depends on SPARSEMEM || X86_64_ACPI_NUMA - depends on HOTPLUG && !SOFTWARE_SUSPEND && ARCH_ENABLE_MEMORY_HOTPLUG + depends on HOTPLUG && !HIBERNATION && ARCH_ENABLE_MEMORY_HOTPLUG depends on (IA64 || X86 || PPC64 || SUPERH) comment "Memory hotplug is currently incompatible with Software Suspend" - depends on SPARSEMEM && HOTPLUG && SOFTWARE_SUSPEND + depends on SPARSEMEM && HOTPLUG && HIBERNATION config MEMORY_HOTPLUG_SPARSE def_bool y depends on SPARSEMEM && MEMORY_HOTPLUG +config MEMORY_HOTREMOVE + bool "Allow for memory hot remove" + depends on MEMORY_HOTPLUG && ARCH_ENABLE_MEMORY_HOTREMOVE + depends on MIGRATION + # Heavily threaded applications may benefit from splitting the mm-wide # page_table_lock, so that faults on different parts of the user address # space can be handled with less contention: split it at this NR_CPUS. @@ -163,10 +180,14 @@ config ZONE_DMA_FLAG default "0" if !ZONE_DMA default "1" +config BOUNCE + def_bool y + depends on BLOCK && MMU && (ZONE_DMA || HIGHMEM) + config NR_QUICK int depends on QUICKLIST - default "2" if (SUPERH && !SUPERH64) + default "2" if SUPERH default "1" config VIRT_TO_BUS