[PATCH 1/15] x86, sched: Add config option for multi-node CPU scheduling

[Andreas Herrmann <andreas.herrmann3@amd.com>]

I've decided to add this as a subitem of MC scheduling.
I think the normal case will be that a multi-node CPU has more than 1
core on each of its nodes. Thus using MN scheduling without MC
scheduling does not make much sense.

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
---
 arch/x86/Kconfig |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 65fb791..594e7bc 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -713,6 +713,16 @@ config SCHED_MC
 	  making when dealing with multi-core CPU chips at a cost of slightly
 	  increased overhead in some places. If unsure say N here.
 
+config SCHED_MN
+	def_bool n
+	prompt "Multi-node CPU scheduler support"
+	depends on X86_HT && SCHED_MC
+	---help---
+	  Multi-node CPU scheduler support improves the CPU
+	  scheduler's decision making when dealing with multi-node
+	  CPUs (e.g. AMD Magny-Cours) at a cost of slightly increased
+	  overhead in some places. If unsure say N here.
+
 source "kernel/Kconfig.preempt"
 
 config X86_UP_APIC
-- 
1.6.0.4