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 d774520..644e609 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 @@
}
}
+/* 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)
{