From: Damjan Marion <damarion@cisco.com>
Date: Thu, 23 Nov 2017 16:27:05 +0000 (+0100)
Subject: dpdk: prefetch both cachelines during buffer free
X-Git-Tag: v18.04-rc0~189
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=63118b1afd58501377684b800dc86326a3c6038e;p=vpp.git

dpdk: prefetch both cachelines during buffer free

Change-Id: I4ae65494b8f9bc51521add5e66a51b594aad6716
Signed-off-by: Damjan Marion <damarion@cisco.com>
---

diff --git a/src/plugins/dpdk/buffer.c b/src/plugins/dpdk/buffer.c
index 293fb6cba27..baa190df4c4 100644
--- a/src/plugins/dpdk/buffer.c
+++ b/src/plugins/dpdk/buffer.c
@@ -363,7 +363,7 @@ dpdk_prefetch_buffer_by_index (vlib_main_t * vm, u32 bi)
   struct rte_mbuf *mb;
   b = vlib_get_buffer (vm, bi);
   mb = rte_mbuf_from_vlib_buffer (b);
-  CLIB_PREFETCH (mb, CLIB_CACHE_LINE_BYTES, STORE);
+  CLIB_PREFETCH (mb, 2 * CLIB_CACHE_LINE_BYTES, STORE);
   CLIB_PREFETCH (b, CLIB_CACHE_LINE_BYTES, LOAD);
 }