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- 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(-)
- --- 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
- 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 *e
- 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;
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