From: Feifei Wang <feifei.wang2@arm.com>
To: Qiming Yang <qiming.yang@intel.com>, Qi Zhang <qi.z.zhang@intel.com>
Cc: dev@dpdk.org, nd@arm.com, Feifei Wang <feifei.wang2@arm.com>,
Ruifeng Wang <ruifeng.wang@arm.com>
Subject: [PATCH 2/3] net/ice: reduce redundant store operation
Date: Mon, 20 Dec 2021 13:50:38 +0800 [thread overview]
Message-ID: <20211220055039.4035627-3-feifei.wang2@arm.com> (raw)
In-Reply-To: <20211220055039.4035627-1-feifei.wang2@arm.com>
For free buffer in ice driver, it is unnecessary to store 'NULL' into
txep.mbuf. This is because when putting mbuf into Tx queue, tx_tail is
the sentinel. And when doing tx_free, tx_next_dd is the sentinel. In all
processes, mbuf==NULL is not a condition in check. Thus reset of mbuf is
unnecessary and can be omitted.
Signed-off-by: Feifei Wang <feifei.wang2@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
---
drivers/net/ice/ice_rxtx.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c
index f6d8564ab8..e043335bad 100644
--- a/drivers/net/ice/ice_rxtx.c
+++ b/drivers/net/ice/ice_rxtx.c
@@ -2893,12 +2893,10 @@ ice_tx_free_bufs(struct ice_tx_queue *txq)
if (txq->offloads & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) {
for (i = 0; i < txq->tx_rs_thresh; ++i, ++txep) {
rte_mempool_put(txep->mbuf->pool, txep->mbuf);
- txep->mbuf = NULL;
}
} else {
for (i = 0; i < txq->tx_rs_thresh; ++i, ++txep) {
rte_pktmbuf_free_seg(txep->mbuf);
- txep->mbuf = NULL;
}
}
--
2.25.1
next prev parent reply other threads:[~2021-12-20 5:51 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-20 5:50 [PATCH 0/3] reduce redundant store operation for Tx free Feifei Wang
2021-12-20 5:50 ` [PATCH 1/3] net/i40e: reduce redundant store operation Feifei Wang
2021-12-20 5:50 ` Feifei Wang [this message]
2021-12-20 5:50 ` [PATCH 3/3] net/ixgbe: " Feifei Wang
2021-12-20 7:24 ` Wang, Haiyue
2021-12-21 6:55 ` 回复: " Feifei Wang
2022-01-27 7:40 ` [PATCH v3] net/i40e: reduce redundant reset operation Feifei Wang
2022-01-28 6:54 ` Zhang, Qi Z
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