x86: merge native_smp_cpus_done

They look similar enough, and are merged. Only difference
(zap_low_mapping for i386) is inside ifdef

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

arch/x86/kernel/smpboot.c

@@ -880,7 +880,6 @@ do_rest:
 	apic_write(APIC_ESR, 0);
 	apic_read(APIC_ESR);
 
-
 	/*
 	 * Starting actual IPI sequence...
 	 */
@@ -1017,6 +1016,26 @@ void __init native_smp_prepare_boot_cpu(void)
 	per_cpu(cpu_state, me) = CPU_ONLINE;
 }
 
+void __init native_smp_cpus_done(unsigned int max_cpus)
+{
+	/*
+	 * Cleanup possible dangling ends...
+	 */
+	smpboot_restore_warm_reset_vector();
+
+	Dprintk("Boot done.\n");
+
+	impress_friends();
+	smp_checks();
+#ifdef CONFIG_X86_IO_APIC
+	setup_ioapic_dest();
+#endif
+	check_nmi_watchdog();
+#ifdef CONFIG_X86_32
+	zap_low_mappings();
+#endif
+}
+
 #ifdef CONFIG_HOTPLUG_CPU
 void remove_siblinginfo(int cpu)
 {

arch/x86/kernel/smpboot_32.c

@@ -215,24 +215,3 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
 	mb();
 	smp_boot_cpus(max_cpus);
 }
-
-extern void impress_friends(void);
-extern void smp_checks(void);
-
-void __init native_smp_cpus_done(unsigned int max_cpus)
-{
-	/*
-	 * Cleanup possible dangling ends...
-	 */
-	smpboot_restore_warm_reset_vector();
-
-	Dprintk("Boot done.\n");
-
-	impress_friends();
-	smp_checks();
-#ifdef CONFIG_X86_IO_APIC
-	setup_ioapic_dest();
-#endif
-	check_nmi_watchdog();
-	zap_low_mappings();
-}

arch/x86/kernel/smpboot_64.c

@@ -212,21 +212,3 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
 	printk(KERN_INFO "CPU%d: ", 0);
 	print_cpu_info(&cpu_data(0));
 }
-
-extern void impress_friends(void);
-extern void smp_checks(void);
-
-/*
- * Finish the SMP boot.
- */
-void __init native_smp_cpus_done(unsigned int max_cpus)
-{
-	smpboot_restore_warm_reset_vector();
-
-	Dprintk("Boot done.\n");
-
-	impress_friends();
-	smp_checks();
-	setup_ioapic_dest();
-	check_nmi_watchdog();
-}