[kernel][scheduler]Modify the timing of clearing RT_THREAD_STAT_YIELD… (#8142)

src/scheduler_up.c

@@ -29,6 +29,7 @@
  *                             new task directly
  * 2022-01-07     Gabriel      Moving __on_rt_xxxxx_hook to scheduler.c
  * 2023-03-27     rose_man     Split into scheduler upc and scheduler_mp.c
+ * 2023-10-17     ChuShicheng  Modify the timing of clearing RT_THREAD_STAT_YIELD flag bits
  */
 
 #include <rtthread.h>
@@ -270,7 +271,6 @@ void rt_schedule(void)
                 {
                     need_insert_from_thread = 1;
                 }
-                rt_current_thread->stat &= ~RT_THREAD_STAT_YIELD_MASK;
             }
 
             if (to_thread != rt_current_thread)
@@ -287,6 +287,11 @@ void rt_schedule(void)
                     rt_schedule_insert_thread(from_thread);
                 }
 
+                if ((from_thread->stat & RT_THREAD_STAT_YIELD_MASK) != 0)
+                {
+                    from_thread->stat &= ~RT_THREAD_STAT_YIELD_MASK;
+                }
+
                 rt_schedule_remove_thread(to_thread);
                 to_thread->stat = RT_THREAD_RUNNING | (to_thread->stat & ~RT_THREAD_STAT_MASK);