diff --git a/repos/dde_linux/src/lib/lx_emul/shadow/kernel/locking/spinlock.c b/repos/dde_linux/src/lib/lx_emul/shadow/kernel/locking/spinlock.c
index 8425567b8b..43582c6fd7 100644
--- a/repos/dde_linux/src/lib/lx_emul/shadow/kernel/locking/spinlock.c
+++ b/repos/dde_linux/src/lib/lx_emul/shadow/kernel/locking/spinlock.c
@@ -16,6 +16,9 @@
  */
 
 #include <linux/spinlock.h>
+
+#ifdef CONFIG_SMP
+
 #include <linux/rwlock_api_smp.h>
 #include <asm/spinlock.h>
 
@@ -212,3 +215,5 @@ void __lockfunc _raw_write_unlock_irqrestore(rwlock_t *lock, unsigned long flags
 	local_irq_restore(flags);
 }
 #endif
+
+#endif /* CONFIG_SMP */
diff --git a/repos/dde_linux/src/lib/lx_emul/shadow/kernel/sched/fair.c b/repos/dde_linux/src/lib/lx_emul/shadow/kernel/sched/fair.c
index 9a8350ed76..f322998e45 100644
--- a/repos/dde_linux/src/lib/lx_emul/shadow/kernel/sched/fair.c
+++ b/repos/dde_linux/src/lib/lx_emul/shadow/kernel/sched/fair.c
@@ -15,4 +15,6 @@
 #include <../kernel/sched/sched.h>
 #include <linux/sched/nohz.h>
 
+#ifdef CONFIG_SMP
 void nohz_balance_enter_idle(int cpu) { }
+#endif
diff --git a/repos/dde_linux/src/lib/lx_emul/shadow/kernel/smp.c b/repos/dde_linux/src/lib/lx_emul/shadow/kernel/smp.c
index effa1b2553..497f3d51fb 100644
--- a/repos/dde_linux/src/lib/lx_emul/shadow/kernel/smp.c
+++ b/repos/dde_linux/src/lib/lx_emul/shadow/kernel/smp.c
@@ -13,6 +13,8 @@
 
 #include <linux/cpumask.h>
 
+#if (NR_CPUS != 1)
 unsigned int nr_cpu_ids = 1;
+#endif
 
 unsigned long irq_err_count = 0;
diff --git a/repos/dde_linux/src/lib/lx_emul/shadow/kernel/stop_machine.c b/repos/dde_linux/src/lib/lx_emul/shadow/kernel/stop_machine.c
index 97679db05e..3c5ae068c4 100644
--- a/repos/dde_linux/src/lib/lx_emul/shadow/kernel/stop_machine.c
+++ b/repos/dde_linux/src/lib/lx_emul/shadow/kernel/stop_machine.c
@@ -13,7 +13,9 @@
 
 #include <linux/stop_machine.h>
 
+#ifdef CONFIG_SMP
 int stop_machine(cpu_stop_fn_t fn,void * data,const struct cpumask * cpus)
 {
 	return (*fn)(data);
 }
+#endif
diff --git a/repos/dde_linux/src/lib/lx_emul/shadow/mm/vmstat.c b/repos/dde_linux/src/lib/lx_emul/shadow/mm/vmstat.c
index 28e6940fc5..8f0c75d373 100644
--- a/repos/dde_linux/src/lib/lx_emul/shadow/mm/vmstat.c
+++ b/repos/dde_linux/src/lib/lx_emul/shadow/mm/vmstat.c
@@ -15,4 +15,6 @@
 #include <linux/vmstat.h>
 
 
+#ifdef CONFIG_SMP
 void quiet_vmstat(void) { }
+#endif