sched/tcb: add a reference count to the TCB to prevent it from being deleted.

To replace the large lock with smaller ones and reduce the large locks related to the TCB,
in many scenarios, we only need to ensure that the TCB won't be released
instead of locking, thus reducing the possibility of lock recursion.

Signed-off-by: hujun5 <[email protected]>

Author: hujun260

crypto/controlse/controlse_main.cxx

@@ -701,8 +701,12 @@ int main(int argc, FAR char *argv[])
 #ifdef CONFIG_STACK_COLORATION
       FAR struct tcb_s *tcb;
       tcb = nxsched_get_tcb(getpid());
-      fprintf(stderr, "\nStack used: %zu / %zu\n", up_check_tcbstack(tcb),
-              tcb->adj_stack_size);
+      if (tcb)
+        {
+          fprintf(stderr, "\nStack used: %zu / %zu\n", up_check_tcbstack(tcb),
+                  tcb->adj_stack_size);
+          nxsched_put_tcb(tcb);
+        }
 #else
       fprintf(stderr, "\nStack used: unknown"
                       " (STACK_COLORATION must be enabled)\n");