+#ifdef RTE_ARCH_64
+ RTE_BUILD_BUG_ON(sizeof(struct rte_stack_lf_head) != 16);
+#else
+ if (flags & RTE_STACK_F_LF) {
+ STACK_LOG_ERR("Lock-free stack is not supported on your platform\n");
+ return NULL;
+ }
+#endif
+
+ sz = rte_stack_get_memsize(count, flags);