[dpdk-dev] [PATCH v2 2/4] hash: add local cache for TSX region

[Bruce Richardson <bruce.richardson@intel.com>]

From: Yipeng Wang <yipeng1.wang@intel.com>

This patch adds back the local cache when TSX support is turned on.

When TSX is turned on, free key-data slot ring would be contended by
various TSX regions. The purpose of this commit is to reduce possible
memory collisions during key insertion.

Signed-off-by: Yipeng Wang <yipeng1.wang@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
---
 lib/librte_hash/rte_cuckoo_hash.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/librte_hash/rte_cuckoo_hash.c b/lib/librte_hash/rte_cuckoo_hash.c
index 76f5dc8..5d5f9f1 100644
--- a/lib/librte_hash/rte_cuckoo_hash.c
+++ b/lib/librte_hash/rte_cuckoo_hash.c
@@ -180,8 +180,10 @@ struct rte_hash *
 	}
 
 	/* Check extra flags field to check extra options. */
-	if (params->extra_flag & RTE_HASH_EXTRA_FLAGS_TRANS_MEM_SUPPORT)
+	if (params->extra_flag & RTE_HASH_EXTRA_FLAGS_TRANS_MEM_SUPPORT) {
+		use_local_cache = 1;
 		hw_trans_mem_support = 1;
+	}
 
 	if (params->extra_flag & RTE_HASH_EXTRA_FLAGS_MULTI_WRITER_ADD) {
 		use_local_cache = 1;
-- 
1.8.5.6