From: Glauber Costa <gcosta@redhat.com>
Date: Mon, 3 Mar 2008 17:13:03 +0000 (-0300)
Subject: x86: move cpu_coregroup_map to common file
X-Git-Tag: v2.6.26-rc1~1154^2~451
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=70708a18e834fd709a4f497bb419ec84d1eb3511;p=pandora-kernel.git

x86: move cpu_coregroup_map to common file

it is equal between architectures

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index d774520a6b48..644e60969f90 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1,6 +1,7 @@
 #include <linux/init.h>
 #include <linux/smp.h>
 #include <linux/module.h>
+#include <linux/sched.h>
 
 /* Number of siblings per CPU package */
 int smp_num_siblings = 1;
@@ -95,6 +96,21 @@ void __cpuinit set_cpu_sibling_map(int cpu)
 	}
 }
 
+/* maps the cpu to the sched domain representing multi-core */
+cpumask_t cpu_coregroup_map(int cpu)
+{
+	struct cpuinfo_x86 *c = &cpu_data(cpu);
+	/*
+	 * For perf, we return last level cache shared map.
+	 * And for power savings, we return cpu_core_map
+	 */
+	if (sched_mc_power_savings || sched_smt_power_savings)
+		return per_cpu(cpu_core_map, cpu);
+	else
+		return c->llc_shared_map;
+}
+
+
 #ifdef CONFIG_HOTPLUG_CPU
 void remove_siblinginfo(int cpu)
 {
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