sh: Split out CPU topology initialization.

Split out the CPU topology initialization to a separate file,
and switch it to a percpu type, rather than an NR_CPUS array.

At the same time, switch to only registering present CPUs,
rather than using the possible CPU map.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

3 files changed, 26 insertions, 19 deletions

diff --git a/arch/sh/kernel/Makefile b/arch/sh/kernel/Makefile
index 9104b6257644..fb623e5d1857 100644
--- a/arch/sh/kernel/Makefile
+++ b/arch/sh/kernel/Makefile
@@ -4,10 +4,9 @@
 
 extra-y := head.o init_task.o vmlinux.lds
 
-obj-y   := process.o signal.o traps.o irq.o \
-        ptrace.o setup.o time.o sys_sh.o semaphore.o \
-        io.o io_generic.o sh_ksyms.o syscalls.o \
-        debugtraps.o
+obj-y   := debugtraps.o io.o io_generic.o irq.o process.o ptrace.o \
+           semaphore.o setup.o signal.o sys_sh.o syscalls.o \
+           time.o topology.o traps.o
 
 obj-y                           += cpu/ timers/
 obj-$(CONFIG_VSYSCALL)          += vsyscall/
@@ -17,7 +16,7 @@ obj-$(CONFIG_CF_ENABLER)	+= cf-enabler.o
 obj-$(CONFIG_SH_STANDARD_BIOS)  += sh_bios.o
 obj-$(CONFIG_SH_KGDB)           += kgdb_stub.o kgdb_jmp.o
 obj-$(CONFIG_SH_CPU_FREQ)       += cpufreq.o
-obj-$(CONFIG_MODULES)           += module.o
+obj-$(CONFIG_MODULES)           += sh_ksyms.o module.o
 obj-$(CONFIG_EARLY_PRINTK)      += early_printk.o
 obj-$(CONFIG_KEXEC)             += machine_kexec.o relocate_kernel.o
 obj-$(CONFIG_CRASH_DUMP)        += crash_dump.o
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index c27729135935..61152b438325 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -23,6 +23,7 @@
 #include <linux/kexec.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
+#include <asm/page.h>
 #include <asm/sections.h>
 #include <asm/irq.h>
 #include <asm/setup.h>
@@ -389,20 +390,6 @@ struct sh_machine_vector* __init get_mv_byname(const char* name)
         return NULL;
 }
 
-static struct cpu cpu[NR_CPUS];
-
-static int __init topology_init(void)
-{
-        int cpu_id;
-
-        for_each_possible_cpu(cpu_id)
-                register_cpu(&cpu[cpu_id], cpu_id);
-
-        return 0;
-}
-
-subsys_initcall(topology_init);
-
 static const char *cpu_name[] = {
         [CPU_SH7206]    = "SH7206",     [CPU_SH7619]    = "SH7619",
         [CPU_SH7604]    = "SH7604",     [CPU_SH7300]    = "SH7300",
diff --git a/arch/sh/kernel/topology.c b/arch/sh/kernel/topology.c
new file mode 100644
index 000000000000..8a4664c0ab57
--- /dev/null
+++ b/arch/sh/kernel/topology.c
@@ -0,0 +1,21 @@
+#include <linux/cpu.h>
+#include <linux/cpumask.h>
+#include <linux/init.h>
+#include <linux/percpu.h>
+
+static DEFINE_PER_CPU(struct cpu, cpu_devices);
+
+static int __init topology_init(void)
+{
+        int i, ret;
+
+        for_each_present_cpu(i) {
+                ret = register_cpu(&per_cpu(cpu_devices, i), i);
+                if (unlikely(ret))
+                        printk(KERN_WARNING "%s: register_cpu %d failed (%d)\n",
+                               __FUNCTION__, i, ret);
+        }
+
+        return 0;
+}
+subsys_initcall(topology_init);