diff options
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index e0dfb268717c..b72e7d040f78 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -128,7 +128,7 @@ config ZSWAP_COMPRESSOR_DEFAULT choice prompt "Default allocator" depends on ZSWAP - default ZSWAP_ZPOOL_DEFAULT_ZSMALLOC if MMU + default ZSWAP_ZPOOL_DEFAULT_ZSMALLOC if HAVE_ZSMALLOC default ZSWAP_ZPOOL_DEFAULT_ZBUD help Selects the default allocator for the compressed cache for @@ -154,6 +154,7 @@ config ZSWAP_ZPOOL_DEFAULT_Z3FOLD config ZSWAP_ZPOOL_DEFAULT_ZSMALLOC bool "zsmalloc" + depends on HAVE_ZSMALLOC select ZSMALLOC help Use the zsmalloc allocator as the default allocator. @@ -186,10 +187,15 @@ config Z3FOLD page. It is a ZBUD derivative so the simplicity and determinism are still there. +config HAVE_ZSMALLOC + def_bool y + depends on MMU + depends on PAGE_SIZE_LESS_THAN_256KB # we want <= 64 KiB + config ZSMALLOC tristate prompt "N:1 compression allocator (zsmalloc)" if ZSWAP - depends on MMU + depends on HAVE_ZSMALLOC help zsmalloc is a slab-based memory allocator designed to store pages of various compression levels efficiently. It achieves @@ -731,7 +737,7 @@ config DEFAULT_MMAP_MIN_ADDR from userspace allocation. Keeping a user from writing to low pages can help reduce the impact of kernel NULL pointer bugs. - For most ppc64 and x86 users with lots of address space + For most arm64, ppc64 and x86 users with lots of address space a value of 65536 is reasonable and should cause no problems. On arm and other archs it should not be higher than 32768. Programs which use vm86 functionality or have some need to map @@ -963,6 +969,7 @@ config DEFERRED_STRUCT_PAGE_INIT depends on SPARSEMEM depends on !NEED_PER_CPU_KM depends on 64BIT + depends on !KMSAN select PADATA help Ordinarily all struct pages are initialised during early boot in a @@ -1136,16 +1143,6 @@ config DMAPOOL_TEST config ARCH_HAS_PTE_SPECIAL bool -# -# Some architectures require a special hugepage directory format that is -# required to support multiple hugepage sizes. For example a4fe3ce76 -# "powerpc/mm: Allow more flexible layouts for hugepage pagetables" -# introduced it on powerpc. This allows for a more flexible hugepage -# pagetable layouts. -# -config ARCH_HAS_HUGEPD - bool - config MAPPING_DIRTY_HELPERS bool |