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-rw-r--r--init/Kconfig13
1 files changed, 13 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 54f31a1..bab643f 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -607,6 +607,19 @@ config BASE_SMALL
default 0 if BASE_FULL
default 1 if !BASE_FULL
+config PAGE_GROUP_BY_MOBILITY
+ bool "Group pages based on their mobility in the page allocator"
+ def_bool y
+ help
+ The standard allocator will fragment memory over time which means
+ that high order allocations will fail even if kswapd is running. If
+ this option is set, the allocator will try and group page types
+ based on their ability to migrate or reclaim. This is a best effort
+ attempt at lowering fragmentation which a few workloads care about.
+ The loss is a more complex allocator that may perform slower. If
+ you are interested in working with large pages, say Y and set
+ /proc/sys/vm/min_free_bytes to 16374. Otherwise say N
+
menuconfig MODULES
bool "Enable loadable module support"
help
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