1 files changed, 83 insertions, 0 deletions
diff --git a/ANDROID_3.4.5/arch/x86/kernel/topology.c b/ANDROID_3.4.5/arch/x86/kernel/topology.c
new file mode 100644
index 00000000..76ee9770
--- /dev/null
+++ b/ANDROID_3.4.5/arch/x86/kernel/topology.c
@@ -0,0 +1,83 @@
+/*
+ * Populate sysfs with topology information
+ *
+ * Written by: Matthew Dobson, IBM Corporation
+ * Original Code: Paul Dorwin, IBM Corporation, Patrick Mochel, OSDL
+ *
+ * Copyright (C) 2002, IBM Corp.
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Send feedback to <colpatch@us.ibm.com>
+ */
+#include <linux/nodemask.h>
+#include <linux/export.h>
+#include <linux/mmzone.h>
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <asm/cpu.h>
+
+static DEFINE_PER_CPU(struct x86_cpu, cpu_devices);
+
+#ifdef CONFIG_HOTPLUG_CPU
+int __ref arch_register_cpu(int num)
+{
+	/*
+	 * CPU0 cannot be offlined due to several
+	 * restrictions and assumptions in kernel. This basically
+	 * doesn't add a control file, one cannot attempt to offline
+	 * BSP.
+	 *
+	 * Also certain PCI quirks require not to enable hotplug control
+	 * for all CPU's.
+	 */
+	if (num)
+		per_cpu(cpu_devices, num).cpu.hotpluggable = 1;
+
+	return register_cpu(&per_cpu(cpu_devices, num).cpu, num);
+}
+EXPORT_SYMBOL(arch_register_cpu);
+
+void arch_unregister_cpu(int num)
+{
+	unregister_cpu(&per_cpu(cpu_devices, num).cpu);
+}
+EXPORT_SYMBOL(arch_unregister_cpu);
+#else /* CONFIG_HOTPLUG_CPU */
+
+static int __init arch_register_cpu(int num)
+{
+	return register_cpu(&per_cpu(cpu_devices, num).cpu, num);
+}
+#endif /* CONFIG_HOTPLUG_CPU */
+
+static int __init topology_init(void)
+{
+	int i;
+
+#ifdef CONFIG_NUMA
+	for_each_online_node(i)
+		register_one_node(i);
+#endif
+
+	for_each_present_cpu(i)
+		arch_register_cpu(i);
+
+	return 0;
+}
+subsys_initcall(topology_init);