linux-kernel - [RFC PATCH 3/8] x86: implement arch interface for scheduler domain setup

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Date:	Fri, 13 Dec 2013 12:11:23 +0000
From:	dietmar.eggemann@....com
To:	peterz@...radead.org, mingo@...hat.com, vincent.guittot@...aro.org,
	morten.rasmussen@....com, chris.redpath@....com
Cc:	linux-kernel@...r.kernel.org, dietmar.eggemann@....com
Subject: [RFC PATCH 3/8] x86: implement arch interface for scheduler domain setup

From: Dietmar Eggemann <dietmar.eggemann@....com>

This patch provides the arch_sched_domain_info array for the x86 arch.

Signed-off-by: Dietmar Eggemann <dietmar.eggemann@....com>
---
 arch/x86/kernel/topology.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/x86/kernel/topology.c b/arch/x86/kernel/topology.c
index 649b010da00b..b9ddd4b50265 100644
--- a/arch/x86/kernel/topology.c
+++ b/arch/x86/kernel/topology.c
@@ -30,11 +30,23 @@
 #include <linux/mmzone.h>
 #include <linux/init.h>
 #include <linux/smp.h>
+#include <linux/sched.h>
 #include <linux/irq.h>
 #include <asm/cpu.h>
 
 static DEFINE_PER_CPU(struct x86_cpu, cpu_devices);
 
+arch_sched_domain_info_t arch_sched_domain_info[] = {
+#ifdef CONFIG_SCHED_SMT
+		{ cpu_smt_mask, SD_SHARE_CPUPOWER | SD_SHARE_PKG_RESOURCES },
+#endif
+#ifdef CONFIG_SCHED_MC
+		{ cpu_coregroup_mask, SD_SHARE_PKG_RESOURCES },
+#endif
+		{ cpu_cpu_mask, SD_PREFER_SIBLING },
+		{ NULL, },
+};
+
 #ifdef CONFIG_HOTPLUG_CPU
 
 #ifdef CONFIG_BOOTPARAM_HOTPLUG_CPU0
-- 
1.7.9.5


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