linux-kernel - [PATCH 17/33] sched, mm, x86: Add the ARCH_SUPPORTS_NUMA

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Message-Id: <1353624594-1118-18-git-send-email-mingo@kernel.org>
Date:	Thu, 22 Nov 2012 23:49:38 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Turner <pjt@...gle.com>,
	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	Christoph Lameter <cl@...ux.com>,
	Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Johannes Weiner <hannes@...xchg.org>,
	Hugh Dickins <hughd@...gle.com>
Subject: [PATCH 17/33] 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@...llo.nl>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Andrea Arcangeli <aarcange@...hat.com>
Cc: Rik van Riel <riel@...hat.com>
Cc: Mel Gorman <mgorman@...e.de>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Hugh Dickins <hughd@...gle.com>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 init/Kconfig | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/init/Kconfig b/init/Kconfig
index b8a4a58..cf3e79c 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
-- 
1.7.11.7

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