[dpdk-dev] [PATCH 1/2] mempool: indicate the usages of multi memzones

[Hemant Agrawal]

This is required for the optimizations w.r.t hw mempools.
They will use different kind of optimizations if the buffers
are from single contiguous memzone.

Signed-off-by: Hemant Agrawal <hemant.agrawal at nxp.com>
---
 lib/librte_mempool/rte_mempool.c | 7 +++++--
 lib/librte_mempool/rte_mempool.h | 5 +++++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/lib/librte_mempool/rte_mempool.c b/lib/librte_mempool/rte_mempool.c
index d50dba4..9d3737c 100644
--- a/lib/librte_mempool/rte_mempool.c
+++ b/lib/librte_mempool/rte_mempool.c
@@ -387,13 +387,16 @@ rte_mempool_populate_iova(struct rte_mempool *mp, char *vaddr,
 	total_elt_sz = mp->header_size + mp->elt_size + mp->trailer_size;
 
 	/* Detect pool area has sufficient space for elements */
-	if (mp->flags & MEMPOOL_F_CAPA_PHYS_CONTIG) {
-		if (len < total_elt_sz * mp->size) {
+	if (len < total_elt_sz * mp->size) {
+		if (mp->flags & MEMPOOL_F_CAPA_PHYS_CONTIG) {
 			RTE_LOG(ERR, MEMPOOL,
 				"pool area %" PRIx64 " not enough\n",
 				(uint64_t)len);
 			return -ENOSPC;
 		}
+	} else {
+		/* Memory will be allocated from multiple memzones */
+		mp->flags |= MEMPOOL_F_MULTI_MEMZONE;
 	}
 
 	memhdr = rte_zmalloc("MEMPOOL_MEMHDR", sizeof(*memhdr), 0);
diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h
index 721227f..394a4fe 100644
--- a/lib/librte_mempool/rte_mempool.h
+++ b/lib/librte_mempool/rte_mempool.h
@@ -292,6 +292,11 @@ struct rte_mempool {
  */
 #define MEMPOOL_F_CAPA_BLK_ALIGNED_OBJECTS 0x0080
 
+/* Indicates that the mempool buffers are allocated from multiple memzones
+ * the buffer may or may not be physically contiguous.
+ */
+#define MEMPOOL_F_MULTI_MEMZONE 0x0100
+
 /**
  * @internal When debug is enabled, store some statistics.
  *
-- 
2.7.4