diff options
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 781be3240e21..d5d4eca947a6 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -934,6 +934,13 @@ config ARCH_SUPPORTS_PUD_PFNMAP depends on ARCH_SUPPORTS_HUGE_PFNMAP && HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD # +# Architectures that always use weak definitions for percpu +# variables in modules should set this. +# +config ARCH_MODULE_NEEDS_WEAK_PER_CPU + bool + +# # UP and nommu archs use km based percpu allocator # config NEED_PER_CPU_KM @@ -1005,8 +1012,8 @@ config ARCH_FORCE_MAX_ORDER # the default page block order is MAX_PAGE_ORDER (10) as per # include/linux/mmzone.h. # -config PAGE_BLOCK_ORDER - int "Page Block Order" +config PAGE_BLOCK_MAX_ORDER + int "Page Block Order Upper Limit" range 1 10 if ARCH_FORCE_MAX_ORDER = 0 default 10 if ARCH_FORCE_MAX_ORDER = 0 range 1 ARCH_FORCE_MAX_ORDER if ARCH_FORCE_MAX_ORDER != 0 @@ -1014,15 +1021,16 @@ config PAGE_BLOCK_ORDER help The page block order refers to the power of two number of pages that are physically contiguous and can have a migrate type associated to - them. The maximum size of the page block order is limited by - ARCH_FORCE_MAX_ORDER. + them. The maximum size of the page block order is at least limited by + ARCH_FORCE_MAX_ORDER/MAX_PAGE_ORDER. - This config allows overriding the default page block order when the - page block order is required to be smaller than ARCH_FORCE_MAX_ORDER - or MAX_PAGE_ORDER. + This config adds a new upper limit of default page block + order when the page block order is required to be smaller than + ARCH_FORCE_MAX_ORDER/MAX_PAGE_ORDER or other limits + (see include/linux/pageblock-flags.h for details). Reducing pageblock order can negatively impact THP generation - success rate. If your workloads uses THP heavily, please use this + success rate. If your workloads use THP heavily, please use this option with caution. Don't change if unsure. @@ -1109,9 +1117,6 @@ config ARCH_HAS_CURRENT_STACK_POINTER register alias named "current_stack_pointer", this config can be selected. -config ARCH_HAS_PTE_DEVMAP - bool - config ARCH_HAS_ZONE_DMA_SET bool @@ -1129,7 +1134,6 @@ config ZONE_DEVICE depends on MEMORY_HOTPLUG depends on MEMORY_HOTREMOVE depends on SPARSEMEM_VMEMMAP - depends on ARCH_HAS_PTE_DEVMAP select XARRAY_MULTI help |