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-rw-r--r--mm/Kconfig41
1 files changed, 24 insertions, 17 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index f4899ec39cf4..12179b8c3b89 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -519,15 +519,17 @@ config CMA_AREAS
If unsure, leave the default value "7".
-config ZBUD
- tristate
- default n
+config MEM_SOFT_DIRTY
+ bool "Track memory changes"
+ depends on CHECKPOINT_RESTORE && HAVE_ARCH_SOFT_DIRTY && PROC_FS
+ select PROC_PAGE_MONITOR
help
- A special purpose allocator for storing compressed pages.
- It is designed to store up to two compressed pages per physical
- page. While this design limits storage density, it has simple and
- deterministic reclaim properties that make it preferable to a higher
- density approach when reclaim will be used.
+ This option enables memory changes tracking by introducing a
+ soft-dirty bit on pte-s. This bit it set when someone writes
+ into a page just as regular dirty bit, but unlike the latter
+ it can be cleared by hands.
+
+ See Documentation/vm/soft-dirty.txt for more details.
config ZSWAP
bool "Compressed cache for swap pages (EXPERIMENTAL)"
@@ -549,17 +551,22 @@ config ZSWAP
they have not be fully explored on the large set of potential
configurations and workloads that exist.
-config MEM_SOFT_DIRTY
- bool "Track memory changes"
- depends on CHECKPOINT_RESTORE && HAVE_ARCH_SOFT_DIRTY && PROC_FS
- select PROC_PAGE_MONITOR
+config ZPOOL
+ tristate "Common API for compressed memory storage"
+ default n
help
- This option enables memory changes tracking by introducing a
- soft-dirty bit on pte-s. This bit it set when someone writes
- into a page just as regular dirty bit, but unlike the latter
- it can be cleared by hands.
+ Compressed memory storage API. This allows using either zbud or
+ zsmalloc.
- See Documentation/vm/soft-dirty.txt for more details.
+config ZBUD
+ tristate "Low density storage for compressed pages"
+ default n
+ help
+ A special purpose allocator for storing compressed pages.
+ It is designed to store up to two compressed pages per physical
+ page. While this design limits storage density, it has simple and
+ deterministic reclaim properties that make it preferable to a higher
+ density approach when reclaim will be used.
config ZSMALLOC
tristate "Memory allocator for compressed pages"