sh: Support for multiple nodes.

This adds basic support for multiple nodes on SH machines.
This is primarily useful for boards with many different
memory blocks that are otherwise unused (SH7722/SH7785 URAM
and so forth).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index 955a851c0c75..8c5b73ab4772 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -293,6 +293,17 @@ config VSYSCALL
           For systems with an MMU that can afford to give up a page,
           (the default value) say Y.
 
+config NUMA
+        bool "Non Uniform Memory Access (NUMA) Support"
+        depends on MMU && EXPERIMENTAL
+        default n
+        help
+          Some SH systems have many various memories scattered around
+          the address space, each with varying latencies. This enables
+          support for these blocks by binding them to nodes and allowing
+          memory policies to be used for prioritizing and controlling
+          allocation behaviour.
+
 config NODES_SHIFT
         int
         default "1"