diff --git a/arch/xtensa/include/asm/smp.h b/arch/xtensa/include/asm/smp.h
index 5dc5bf8cdd77..e446e6fc4557 100644
--- a/arch/xtensa/include/asm/smp.h
+++ b/arch/xtensa/include/asm/smp.h
@@ -23,6 +23,7 @@ struct cpumask;
 void arch_send_call_function_ipi_mask(const struct cpumask *mask);
 void arch_send_call_function_single_ipi(int cpu);
 
+void secondary_start_kernel(void);
 void smp_init_cpus(void);
 void secondary_init_irq(void);
 void ipi_init(void);
diff --git a/arch/xtensa/kernel/smp.c b/arch/xtensa/kernel/smp.c
index 07dd6baf18cf..94a23f100726 100644
--- a/arch/xtensa/kernel/smp.c
+++ b/arch/xtensa/kernel/smp.c
@@ -21,6 +21,7 @@
 #include <linux/irq.h>
 #include <linux/kdebug.h>
 #include <linux/module.h>
+#include <linux/profile.h>
 #include <linux/sched/mm.h>
 #include <linux/sched/hotplug.h>
 #include <linux/sched/task_stack.h>