linux-kernel - [RFC,PATCH 2/2] net: stmmac: Change the tx clean lock

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Message-Id: <20200324093828.30019-2-david.wu@rock-chips.com>
Date:   Tue, 24 Mar 2020 17:38:28 +0800
From:   David Wu <david.wu@...k-chips.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, joabreu@...opsys.com,
        alexandre.torgue@...com, peppe.cavallaro@...com,
        linux-kernel@...r.kernel.org, David Wu <david.wu@...k-chips.com>
Subject: [RFC,PATCH 2/2] net: stmmac: Change the tx clean lock

At tx clean, use a frozen queue instead of blocking
the current queue, could still queue skb, which improve
performance.

Signed-off-by: David Wu <david.wu@...k-chips.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index cb7a5bad4cfe..946058bcc9ed 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1897,7 +1897,7 @@ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue)
 	unsigned int bytes_compl = 0, pkts_compl = 0;
 	unsigned int entry, count = 0;
 
-	__netif_tx_lock_bh(netdev_get_tx_queue(priv->dev, queue));
+	netif_tx_lock_q(netdev_get_tx_queue(priv->dev, queue));
 
 	priv->xstats.tx_clean++;
 
@@ -1994,7 +1994,7 @@ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue)
 	if (tx_q->dirty_tx != tx_q->cur_tx)
 		mod_timer(&tx_q->txtimer, STMMAC_COAL_TIMER(priv->tx_coal_timer));
 
-	__netif_tx_unlock_bh(netdev_get_tx_queue(priv->dev, queue));
+	netif_tx_unlock_q(netdev_get_tx_queue(priv->dev, queue));
 
 	return count;
 }
-- 
2.19.1