1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index a59638b37c1a..fd3266696a4d 100644
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -9,6 +9,23 @@ config XEN_BALLOON
           the system to expand the domain's memory allocation, or alternatively
           return unneeded memory to the system.
 
+config XEN_SELFBALLOONING
+        bool "Dynamically self-balloon kernel memory to target"
+        depends on XEN && XEN_BALLOON && CLEANCACHE && SWAP
+        default n
+        help
+          Self-ballooning dynamically balloons available kernel memory driven
+          by the current usage of anonymous memory ("committed AS") and
+          controlled by various sysfs-settable parameters.  Configuring
+          FRONTSWAP is highly recommended; if it is not configured, self-
+          ballooning is disabled by default but can be enabled with the
+          'selfballooning' kernel boot parameter.  If FRONTSWAP is configured,
+          frontswap-selfshrinking is enabled by default but can be disabled
+          with the 'noselfshrink' kernel boot parameter; and self-ballooning
+          is enabled by default but can be disabled with the 'noselfballooning'
+          kernel boot parameter.  Note that systems without a sufficiently
+          large swap device should not enable self-ballooning.
+
 config XEN_SCRUB_PAGES
         bool "Scrub pages before returning them to system"
         depends on XEN_BALLOON