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net: 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>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Crispin 2016-06-10 13:28:07 +02:00 committed by David S. Miller
parent 12c97c13ea
commit ad3cba989e
1 changed files with 16 additions and 1 deletions
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17
drivers/net/ethernet/mediatek/mtk_eth_soc.c
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@ -704,6 +704,20 @@ 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;
@ -950,7 +964,8 @@ 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;