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From: David Marchand <david.marchand@redhat.com>
To: dev@dpdk.org
Cc: roretzla@linux.microsoft.com,
=?UTF-8?q?Morten=20Br=C3=B8rup?= <mb@smartsharesystems.com>,
Stephen Hemminger <stephen@networkplumber.org>,
Bruce Richardson <bruce.richardson@intel.com>,
Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>
Subject: [PATCH v12 1/4] net/i40e: use mbuf prefetch helper
Date: Wed, 19 Jun 2024 17:01:23 +0200
Message-ID: <20240619150126.1037902-2-david.marchand@redhat.com>
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References: <1706657173-26166-1-git-send-email-roretzla@linux.microsoft.com>
<20240619150126.1037902-1-david.marchand@redhat.com>
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Errors-To: dev-bounces@dpdk.org
From: Tyler Retzlaff <roretzla@linux.microsoft.com>
Don't directly access the cacheline1 field in rte_mbuf struct for
prefetch instead just use rte_mbuf_prefetch_part2() to prefetch.
Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
Reviewed-by: Morten Brørup <mb@smartsharesystems.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
---
drivers/net/i40e/i40e_rxtx_vec_avx512.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/i40e/i40e_rxtx_vec_avx512.c b/drivers/net/i40e/i40e_rxtx_vec_avx512.c
index f3050cd06c..0238b03f8a 100644
--- a/drivers/net/i40e/i40e_rxtx_vec_avx512.c
+++ b/drivers/net/i40e/i40e_rxtx_vec_avx512.c
@@ -826,7 +826,7 @@ i40e_tx_free_bufs_avx512(struct i40e_tx_queue *txq)
free[0] = m;
nb_free = 1;
for (i = 1; i < n; i++) {
- rte_prefetch0(&txep[i + 3].mbuf->cacheline1);
+ rte_mbuf_prefetch_part2(txep[i + 3].mbuf);
m = rte_pktmbuf_prefree_seg(txep[i].mbuf);
if (likely(m)) {
if (likely(m->pool == free[0]->pool)) {
--
2.45.1