doc: fix file argument of debug functions

[dpdk.git] / lib / librte_mempool / rte_mempool.h

diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h
index c8a81e2..440f3b1 100644 (file)
--- a/lib/librte_mempool/rte_mempool.h
+++ b/lib/librte_mempool/rte_mempool.h
@@ -75,6 +75,7 @@
 #include <rte_branch_prediction.h>
 #include <rte_ring.h>
 #include <rte_memcpy.h>
+#include <rte_common.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -123,7 +124,9 @@ struct rte_mempool_objsz {
        /**< Total size of an object (header + elt + trailer). */
 };
 
-#define RTE_MEMPOOL_NAMESIZE 32 /**< Maximum length of a memory pool. */
+/**< Maximum length of a memory pool's name. */
+#define RTE_MEMPOOL_NAMESIZE (RTE_RING_NAMESIZE - \
+                             sizeof(RTE_MEMPOOL_MZ_PREFIX) + 1)
 #define RTE_MEMPOOL_MZ_PREFIX "MP_"
 
 /* "MP_<name>" */
@@ -163,6 +166,8 @@ struct rte_mempool_objhdr {
  */
 STAILQ_HEAD(rte_mempool_objhdr_list, rte_mempool_objhdr);
 
+#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
+
 /**
  * Mempool object trailer structure
  *
@@ -170,11 +175,11 @@ STAILQ_HEAD(rte_mempool_objhdr_list, rte_mempool_objhdr);
  * trailer structure containing a cookie preventing memory corruptions.
  */
 struct rte_mempool_objtlr {
-#ifdef RTE_LIBRTE_MEMPOOL_DEBUG
        uint64_t cookie;                 /**< Debug cookie. */
-#endif
 };
 
+#endif
+
 /**
  * A list of memory where objects are stored
  */
@@ -206,7 +211,13 @@ struct rte_mempool_memhdr {
  * The RTE mempool structure.
  */
 struct rte_mempool {
-       char name[RTE_MEMPOOL_NAMESIZE]; /**< Name of mempool. */
+       /*
+        * Note: this field kept the RTE_MEMZONE_NAMESIZE size due to ABI
+        * compatibility requirements, it could be changed to
+        * RTE_MEMPOOL_NAMESIZE next time the ABI changes
+        */
+       char name[RTE_MEMZONE_NAMESIZE]; /**< Name of mempool. */
+       RTE_STD_C11
        union {
                void *pool_data;         /**< Ring or pool to store objects. */
                uint64_t pool_id;        /**< External mempool identifier. */
@@ -578,10 +589,8 @@ typedef void (rte_mempool_ctor_t)(struct rte_mempool *, void *);
 /**
  * Create a new mempool named *name* in memory.
  *
- * This function uses ``memzone_reserve()`` to allocate memory. The
+ * This function uses ``rte_memzone_reserve()`` to allocate memory. The
  * pool contains n elements of elt_size. Its size is set to n.
- * All elements of the mempool are allocated together with the mempool header,
- * in one physically continuous chunk of memory.
  *
  * @param name
  *   The name of the mempool.
@@ -737,7 +746,7 @@ rte_mempool_xmem_create(const char *name, unsigned n, unsigned elt_size,
  *
  * The mempool is allocated and initialized, but it is not populated: no
  * memory is allocated for the mempool elements. The user has to call
- * rte_mempool_populate_*() or to add memory chunks to the pool. Once
+ * rte_mempool_populate_*() to add memory chunks to the pool. Once
  * populated, the user may also want to initialize each object with
  * rte_mempool_obj_iter().
  *
@@ -789,6 +798,10 @@ rte_mempool_free(struct rte_mempool *mp);
  * Add a virtually and physically contiguous memory chunk in the pool
  * where objects can be instanciated.
  *
+ * If the given physical address is unknown (paddr = RTE_BAD_PHYS_ADDR),
+ * the chunk doesn't need to be physically contiguous (only virtually),
+ * and allocated objects may span two pages.
+ *
  * @param mp
  *   A pointer to the mempool structure.
  * @param vaddr
@@ -937,7 +950,7 @@ uint32_t rte_mempool_mem_iter(struct rte_mempool *mp,
        rte_mempool_mem_cb_t *mem_cb, void *mem_cb_arg);
 
 /**
- * Dump the status of the mempool to the console.
+ * Dump the status of the mempool to a file.
  *
  * @param f
  *   A pointer to a file for output
@@ -1498,9 +1511,41 @@ rte_mempool_get(struct rte_mempool *mp, void **obj_p)
  * @return
  *   The number of entries in the mempool.
  */
+unsigned int rte_mempool_avail_count(const struct rte_mempool *mp);
+
+/**
+ * @deprecated
+ * Return the number of entries in 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 entries in the mempool.
+ */
+__rte_deprecated
 unsigned rte_mempool_count(const struct rte_mempool *mp);
 
 /**
+ * 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
  * Return the number of free entries in the mempool ring.
  * i.e. how many entries can be freed back to the mempool.
  *
@@ -1517,10 +1562,11 @@ unsigned rte_mempool_count(const struct rte_mempool *mp);
  * @return
  *   The number of free entries in the mempool.
  */
+__rte_deprecated
 static inline unsigned
 rte_mempool_free_count(const struct rte_mempool *mp)
 {
-       return mp->size - rte_mempool_count(mp);
+       return rte_mempool_in_use_count(mp);
 }
 
 /**
@@ -1539,7 +1585,7 @@ rte_mempool_free_count(const struct rte_mempool *mp)
 static inline int
 rte_mempool_full(const struct rte_mempool *mp)
 {
-       return !!(rte_mempool_count(mp) == mp->size);
+       return !!(rte_mempool_avail_count(mp) == mp->size);
 }
 
 /**
@@ -1558,7 +1604,7 @@ rte_mempool_full(const struct rte_mempool *mp)
 static inline int
 rte_mempool_empty(const struct rte_mempool *mp)
 {
-       return !!(rte_mempool_count(mp) == 0);
+       return !!(rte_mempool_avail_count(mp) == 0);
 }
 
 /**