wangchdo commented on code in PR #17043:
URL: https://github.com/apache/nuttx/pull/17043#discussion_r2363554190


##########
include/nuttx/arch.h:
##########
@@ -2564,6 +2564,9 @@ void irq_dispatch(int irq, FAR void *context);
 #ifdef CONFIG_STACK_COLORATION
 struct tcb_s;
 size_t up_check_tcbstack(FAR struct tcb_s *tcb);
+#ifdef CONFIG_TASK_STACK_OVERFLOW_CHECK
+bool up_check_tcbstack_overflow(FAR struct tcb_s *tcb);

Review Comment:
   By the way, the threashold here is the minimum stack size left 
threshold(default value is 16), this stack overflow checking mechanism does not 
need to know exactly how many stack used or left, it just need to know the 
stack left is bigger than the threshold or not, so the maximum loop iteration 
in this stackoverflow checking function is 4 if the threshold is 16, which is 
very efficient



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