diff --git a/include/rtdef.h b/include/rtdef.h
index 253ec369689282b42e990e25ec2392f7f8b8ad37..6d5263ef628549172d414ae937aa01056b171220 100644
--- a/include/rtdef.h
+++ b/include/rtdef.h
@@ -500,7 +500,7 @@ typedef siginfo_t rt_siginfo_t;
 #define RT_THREAD_CTRL_CLOSE            0x01                /**< Close thread. */
 #define RT_THREAD_CTRL_CHANGE_PRIORITY  0x02                /**< Change thread priority. */
 #define RT_THREAD_CTRL_INFO             0x03                /**< Get thread information. */
-#define RT_THREAD_CTRL_BIND_CPU         0x03                /**< Set thread bind cpu. */
+#define RT_THREAD_CTRL_BIND_CPU         0x04                /**< Set thread bind cpu. */
 
 #ifdef RT_USING_SMP
 
diff --git a/src/cpu.c b/src/cpu.c
index ef6dce1787ca359006bd939ab371564f7f0b37a2..3e2d65dfb9dfa5724f2ca09c9682938cb6d1359d 100644
--- a/src/cpu.c
+++ b/src/cpu.c
@@ -86,6 +86,6 @@ void rt_cpus_lock_status_restore(struct rt_thread *thread)
         rt_hw_spin_unlock(&_cpus_lock);
     }
 }
-RTM_EXPORT(rt_post_switch);
+RTM_EXPORT(rt_cpus_lock_status_restore);
 
 #endif
diff --git a/src/scheduler.c b/src/scheduler.c
index e177bde6b7ae5ac77c92a8bca85068778cf15265..aafa1f4529643563a75837461646bab7a1485683 100644
--- a/src/scheduler.c
+++ b/src/scheduler.c
@@ -99,11 +99,19 @@ static void _rt_scheduler_stack_check(struct rt_thread *thread)
         level = rt_hw_interrupt_disable();
         while (level);
     }
+#if defined(ARCH_CPU_STACK_GROWS_UPWARD)
+    else if ((rt_ubase_t)thread->sp > ((rt_ubase_t)thread->stack_addr + thread->stack_size))
+    {
+        rt_kprintf("warning: %s stack is close to the top of stack address.\n",
+                   thread->name);
+    }
+#else
     else if ((rt_ubase_t)thread->sp <= ((rt_ubase_t)thread->stack_addr + 32))
     {
         rt_kprintf("warning: %s stack is close to end of stack address.\n",
                    thread->name);
     }
+#endif
 }
 #endif