sched/wdog: move g_wdtimernested to wd_start.c

This patch moved the g_wdtimernested to wd_start.c

Signed-off-by: ouyangxiangzhen <ouyangxiangzhen@xiaomi.com>
Signed-off-by: ligd <liguiding1@xiaomi.com>

sched/sched/sched_timerexpiration.c

@@ -528,9 +528,7 @@ void nxsched_alarm_tick_expiration(clock_t ticks)
 
   /* Process the timer ticks and set up the next interval (or not) */
 
-  g_wdtimernested++;
   nexttime = nxsched_timer_process(ticks, elapsed, false);
-  g_wdtimernested--;
 
   nxsched_timer_start(nexttime);
 #ifdef CONFIG_SMP

sched/wdog/wd_initialize.c

@@ -39,10 +39,6 @@
 
 struct list_node g_wdactivelist = LIST_INITIAL_VALUE(g_wdactivelist);
 
-#ifdef CONFIG_SCHED_TICKLESS
-unsigned int g_wdtimernested;
-#endif
-
 /****************************************************************************
  * Public Functions
  ****************************************************************************/

sched/wdog/wd_start.c

@@ -69,6 +69,14 @@
 #  define CALL_FUNC(func, arg) func(arg)
 #endif
 
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+#ifdef CONFIG_SCHED_TICKLESS
+static unsigned int g_wdtimernested;
+#endif
+
 /****************************************************************************
  * Private Functions
  ****************************************************************************/
@@ -93,6 +101,14 @@ static inline_function void wd_expiration(clock_t ticks)
   FAR struct wdog_s *wdog;
   wdentry_t func;
 
+#ifdef CONFIG_SCHED_TICKLESS
+  /* Increment the nested watchdog timer count to handle cases where wd_start
+   * is called in the watchdog callback functions.
+   */
+
+  g_wdtimernested++;
+#endif
+
   /* Process the watchdog at the head of the list as well as any
    * other watchdogs that became ready to run at this time
    */
@@ -122,6 +138,12 @@ static inline_function void wd_expiration(clock_t ticks)
       up_setpicbase(wdog->picbase);
       CALL_FUNC(func, wdog->arg);
     }
+
+#ifdef CONFIG_SCHED_TICKLESS
+  /* Decrement the nested watchdog timer count */
+
+  g_wdtimernested--;
+#endif
 }
 
 /****************************************************************************

sched/wdog/wdog.h

@@ -63,10 +63,6 @@ extern "C"
 
 extern struct list_node g_wdactivelist;
 
-#ifdef CONFIG_SCHED_TICKLESS
-extern unsigned int g_wdtimernested;
-#endif
-
 /****************************************************************************
  * Public Function Prototypes
  ****************************************************************************/