diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.4/0091-net-next-mediatek-only-wake-the-queue-if-it-is-stopp.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.4/0091-net-next-mediatek-only-wake-the-queue-if-it-is-stopp.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.4/0091-net-next-mediatek-only-wake-the-queue-if-it-is-stopp.patch b/target/linux/mediatek/patches-4.4/0091-net-next-mediatek-only-wake-the-queue-if-it-is-stopp.patch new file mode 100644 index 0000000000..c292ff9794 --- /dev/null +++ b/target/linux/mediatek/patches-4.4/0091-net-next-mediatek-only-wake-the-queue-if-it-is-stopp.patch @@ -0,0 +1,53 @@ +From 1473b4cce85760c0202a08e6a48ec51867dc1bf7 Mon Sep 17 00:00:00 2001 +From: John Crispin <john@phrozen.org> +Date: Tue, 3 May 2016 04:01:38 +0200 +Subject: [PATCH 091/102] net-next: mediatek: only wake the queue if it is + stopped + +The current code unconditionally wakes up the queue at the end of each +tx_poll action. Change the code to only wake up the queues if any of +them have actually been stopped before. + +Signed-off-by: John Crispin <john@phrozen.org> +--- + drivers/net/ethernet/mediatek/mtk_eth_soc.c | 17 ++++++++++++++++- + 1 file changed, 16 insertions(+), 1 deletion(-) + +diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +index 87b48c0..9da533e 100644 +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +@@ -716,6 +716,20 @@ static inline int mtk_cal_txd_req(struct sk_buff *skb) + return nfrags; + } + ++static int mtk_queue_stopped(struct mtk_eth *eth) ++{ ++ int i; ++ ++ for (i = 0; i < MTK_MAC_COUNT; i++) { ++ if (!eth->netdev[i]) ++ continue; ++ if (netif_queue_stopped(eth->netdev[i])) ++ return 1; ++ } ++ ++ return 0; ++} ++ + static void mtk_wake_queue(struct mtk_eth *eth) + { + int i; +@@ -960,7 +974,8 @@ static int mtk_poll_tx(struct mtk_eth *eth, int budget, bool *tx_again) + if (!total) + return 0; + +- if (atomic_read(&ring->free_count) > ring->thresh) ++ if (mtk_queue_stopped(eth) && ++ (atomic_read(&ring->free_count) > ring->thresh)) + mtk_wake_queue(eth); + + return total; +-- +1.7.10.4 + |