From 9be2cd8836bd5adcca6db3bf67f59c663800e30c Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@kernel.org>
Date: Tue, 13 Nov 2012 12:02:13 +0100
Subject: [PATCH] sched, mm, x86: Add the ARCH_SUPPORTS_NUMA_BALANCING flag

Allow architectures to opt-in to the adaptive affinity NUMA balancing code.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 init/Kconfig | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/init/Kconfig b/init/Kconfig
index b8a4a5822cf4..cf3e79c387c7 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -725,6 +725,13 @@ config ARCH_USES_NUMA_GENERIC_PGPROT_HUGEPAGE
 config ARCH_WANTS_NUMA_VARIABLE_LOCALITY
 	bool
 
+#
+# For architectures that want to enable the PROT_NONE driven,
+# NUMA-affine scheduler balancing logic:
+#
+config ARCH_SUPPORTS_NUMA_BALANCING
+	bool
+
 menuconfig CGROUPS
 	boolean "Control Group support"
 	depends on EVENTFD
-- 
2.39.5