+ * Return the number of elements which have been allocated from the mempool
+ *
+ * When cache is enabled, this function has to browse the length of
+ * all lcores, so it should not be used in a data path, but only for
+ * debug purposes.
+ *
+ * @param mp
+ * A pointer to the mempool structure.
+ * @return
+ * The number of free entries in the mempool.
+ */
+unsigned int
+rte_mempool_in_use_count(const struct rte_mempool *mp);
+
+/**
+ * @deprecated