1 files changed, 13 insertions, 0 deletions

diff --git a/init/Kconfig b/init/Kconfig
index 54f31a191b88..bab643f7717f 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