Merge pull request #4602 from mysterywolf/isr

[kernel][irq] 优化DEBUG打印输出位置，防止造成歧义

src/irq.c

@@ -66,13 +66,13 @@ void rt_interrupt_enter(void)
 {
     rt_base_t level;
 
-    RT_DEBUG_LOG(RT_DEBUG_IRQ, ("irq coming..., irq nest:%d\n",
-                                rt_interrupt_nest));
-
     level = rt_hw_interrupt_disable();
     rt_interrupt_nest ++;
     RT_OBJECT_HOOK_CALL(rt_interrupt_enter_hook,());
     rt_hw_interrupt_enable(level);
+
+    RT_DEBUG_LOG(RT_DEBUG_IRQ, ("irq has come..., irq current nest:%d\n",
+                                rt_interrupt_nest));
 }
 RTM_EXPORT(rt_interrupt_enter);
 
@@ -87,7 +87,7 @@ void rt_interrupt_leave(void)
 {
     rt_base_t level;
 
-    RT_DEBUG_LOG(RT_DEBUG_IRQ, ("irq leave, irq nest:%d\n",
+    RT_DEBUG_LOG(RT_DEBUG_IRQ, ("irq is going to leave, irq current nest:%d\n",
                                 rt_interrupt_nest));
 
     level = rt_hw_interrupt_disable();