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--- a/arch/arm/mach-cns3xxx/Makefile
+++ b/arch/arm/mach-cns3xxx/Makefile
@@ -5,3 +5,5 @@ cns3xxx-y += core.o pm.o
cns3xxx-$(CONFIG_ATAGS) += devices.o
cns3xxx-$(CONFIG_PCI) += pcie.o
cns3xxx-$(CONFIG_MACH_CNS3420VB) += cns3420vb.o
+cns3xxx-$(CONFIG_SMP) += platsmp.o headsmp.o
+cns3xxx-$(CONFIG_HOTPLUG_CPU) += hotplug.o
--- a/arch/arm/mach-cns3xxx/Kconfig
+++ b/arch/arm/mach-cns3xxx/Kconfig
@@ -6,6 +6,9 @@ config ARCH_CNS3XXX
select MIGHT_HAVE_CACHE_L2X0
select MIGHT_HAVE_PCI
select PCI_DOMAINS if PCI
+ select HAVE_ARM_SCU if SMP
+ select HAVE_ARM_TWD if LOCAL_TIMERS
+ select HAVE_SMP
help
Support for Cavium Networks CNS3XXX platform.
--- a/arch/arm/mach-cns3xxx/core.h
+++ b/arch/arm/mach-cns3xxx/core.h
@@ -13,6 +13,7 @@
#include <linux/reboot.h>
+extern struct smp_operations cns3xxx_smp_ops;
extern void cns3xxx_timer_init(void);
#ifdef CONFIG_CACHE_L2X0
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