Merge tag 'balancenuma-v11' of git://git.kernel.org/pub/scm/linux/kernel/git/mel...

[cascardo/linux.git] / init / Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index 2054e04..1a207ef 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -717,6 +717,50 @@ config LOG_BUF_SHIFT
 config HAVE_UNSTABLE_SCHED_CLOCK
        bool
 
+#
+# For architectures that want to enable the support for NUMA-affine scheduler
+# balancing logic:
+#
+config ARCH_SUPPORTS_NUMA_BALANCING
+       bool
+
+# For architectures that (ab)use NUMA to represent different memory regions
+# all cpu-local but of different latencies, such as SuperH.
+#
+config ARCH_WANT_NUMA_VARIABLE_LOCALITY
+       bool
+
+#
+# For architectures that are willing to define _PAGE_NUMA as _PAGE_PROTNONE
+config ARCH_WANTS_PROT_NUMA_PROT_NONE
+       bool
+
+config ARCH_USES_NUMA_PROT_NONE
+       bool
+       default y
+       depends on ARCH_WANTS_PROT_NUMA_PROT_NONE
+       depends on NUMA_BALANCING
+
+config NUMA_BALANCING_DEFAULT_ENABLED
+       bool "Automatically enable NUMA aware memory/task placement"
+       default y
+       depends on NUMA_BALANCING
+       help
+         If set, autonumic NUMA balancing will be enabled if running on a NUMA
+         machine.
+
+config NUMA_BALANCING
+       bool "Memory placement aware NUMA scheduler"
+       depends on ARCH_SUPPORTS_NUMA_BALANCING
+       depends on !ARCH_WANT_NUMA_VARIABLE_LOCALITY
+       depends on SMP && NUMA && MIGRATION
+       help
+         This option adds support for automatic NUMA aware memory/task placement.
+         The mechanism is quite primitive and is based on migrating memory when
+         it is references to the node the task is running on.
+
+         This system will be inactive on UMA systems.
+
 menuconfig CGROUPS
        boolean "Control Group support"
        depends on EVENTFD