From: Intel <intel.com>
Date: Wed, 18 Sep 2013 10:00:00 +0000 (+0200)
Subject: mem: retrieve mempool cache only when needed
X-Git-Tag: spdx-start~11149
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=d15808aa1e8299271e72ed6b89785703df34fb53;p=dpdk.git

mem: retrieve mempool cache only when needed

It is an optimization for the single consumer case,
or when cache is too small,
or when cache is disabled.

Signed-off-by: Intel
---

diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h
index d1f70b8c07..dd8764ae5f 100644
--- a/lib/librte_mempool/rte_mempool.h
+++ b/lib/librte_mempool/rte_mempool.h
@@ -654,12 +654,11 @@ __mempool_get_bulk(struct rte_mempool *mp, void **obj_table,
 	unsigned lcore_id = rte_lcore_id();
 	uint32_t cache_size = mp->cache_size;
 
-	cache = &mp->local_cache[lcore_id];
-
 	/* cache is not enabled or single consumer */
 	if (unlikely(cache_size == 0 || is_mc == 0 || n >= cache_size))
 		goto ring_dequeue;
 
+	cache = &mp->local_cache[lcore_id];
 	cache_objs = cache->objs;
 
 	/* Can this be satisfied from the cache? */