autonuma: add CONFIG_AUTONUMA and CONFIG_AUTONUMA_DEFAULT_ENABLED
Add the config options to allow building the kernel with AutoNUMA.
If CONFIG_AUTONUMA_DEFAULT_ENABLED is "=y", then
/sys/kernel/mm/autonuma/enabled will be equal to 1, and AutoNUMA will
be enabled automatically at boot.
CONFIG_AUTONUMA currently depends on X86, because no other arch
implements the pte/pmd_numa yet and selecting =y would result in a
failed build, but this shall be relaxed in the future. Porting
AutoNUMA to other archs should be pretty simple.
diff --git a/mm/Kconfig b/mm/Kconfig
index e338407..cbfdb15 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -207,6 +207,19 @@
pages as migration can relocate pages to satisfy a huge page
allocation instead of reclaiming.
+config AUTONUMA
+ bool "Auto NUMA"
+ select MIGRATION
+ depends on NUMA && X86
+ help
+ Automatic NUMA CPU scheduling and memory migration.
+
+config AUTONUMA_DEFAULT_ENABLED
+ bool "Auto NUMA default enabled"
+ depends on AUTONUMA
+ help
+ Automatic NUMA CPU scheduling and memory migration enabled at boot.
+
config PHYS_ADDR_T_64BIT
def_bool 64BIT || ARCH_PHYS_ADDR_T_64BIT
