From: Ingo Molnar <mingo@kernel.org>
Date: Tue, 13 Nov 2012 11:02:13 +0000 (+0100)
Subject: sched, mm, x86: Add the ARCH_SUPPORTS_NUMA_BALANCING flag
X-Git-Tag: next-20121205~43^2~2^2~11
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9be2cd8836bd5adcca6db3bf67f59c663800e30c;p=karo-tx-linux.git

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>
---

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