[SPARC64]: Move topology init code into new file, sysfs.c

Also, use per-cpu data for struct cpu.  Calling kmalloc for
each cpu in topology_init() is just plain clumsy.
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/Makefile

-# $Id: Makefile,v 1.70 2002/02/09 19:49:30 davem Exp $
+#
 # Makefile for the linux kernel.
 #
 
@@ -8,7 +8,7 @@ EXTRA_CFLAGS := -Werror
 extra-y		:= head.o init_task.o vmlinux.lds
 
 obj-y		:= process.o setup.o cpu.o idprom.o \
-		   traps.o auxio.o una_asm.o \
+		   traps.o auxio.o una_asm.o sysfs.o \
 		   irq.o ptrace.o time.o sys_sparc.o signal.o \
 		   unaligned.o central.o pci.o starfire.o semaphore.o \
 		   power.o sbus.o iommu_common.o sparc64_ksyms.o chmc.o \

arch/sparc64/kernel/setup.c

@@ -513,22 +513,3 @@ void sun_do_break(void)
 
 int serial_console = -1;
 int stop_a_enabled = 1;
-
-static int __init topology_init(void)
-{
-	int i, err;
-
-	err = -ENOMEM;
-
-	for_each_possible_cpu(i) {
-		struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
-		if (p) {
-			register_cpu(p, i);
-			err = 0;
-		}
-	}
-
-	return err;
-}
-
-subsys_initcall(topology_init);

arch/sparc64/kernel/sysfs.c

+/* sysfs.c: Toplogy sysfs support code for sparc64.
+ *
+ * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
+ */
+#include <linux/sysdev.h>
+#include <linux/cpu.h>
+#include <linux/smp.h>
+#include <linux/percpu.h>
+#include <linux/init.h>
+
+static DEFINE_PER_CPU(struct cpu, cpu_devices);
+
+static int __init topology_init(void)
+{
+	int cpu;
+
+	for_each_possible_cpu(cpu) {
+		struct cpu *c = &per_cpu(cpu_devices, cpu);
+
+		register_cpu(c, cpu);
+	}
+
+	return 0;
+}
+
+subsys_initcall(topology_init);