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ath9k: optimize waking tx queues, slightly improves performance under load

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30918 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2012-03-13 11:19:19 +00:00
parent baf14aebfc
commit 5ce4a896b7
1 changed files with 39 additions and 0 deletions
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39
package/mac80211/patches/565-ath9k_optimize_queue_wake.patch Normal file
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@ -0,0 +1,39 @@
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -121,13 +121,24 @@ static void ath_txq_unlock_complete(stru
{
struct sk_buff_head q;
struct sk_buff *skb;
+ int qnum = txq->mac80211_qnum;
+ bool wake = false;
__skb_queue_head_init(&q);
skb_queue_splice_init(&txq->complete_q, &q);
+
+ if (txq->stopped && txq->pending_frames < ATH_MAX_QDEPTH) {
+ txq->stopped = false;
+ wake = true;
+ }
+
spin_unlock_bh(&txq->axq_lock);
while ((skb = __skb_dequeue(&q)))
ieee80211_tx_status(sc->hw, skb);
+
+ if (wake)
+ ieee80211_wake_queue(sc->hw, qnum);
}
static void ath_tx_queue_tid(struct ath_txq *txq, struct ath_atx_tid *tid)
@@ -2037,11 +2048,6 @@ static void ath_tx_complete(struct ath_s
if (txq == sc->tx.txq_map[q]) {
if (WARN_ON(--txq->pending_frames < 0))
txq->pending_frames = 0;
-
- if (txq->stopped && txq->pending_frames < ATH_MAX_QDEPTH) {
- ieee80211_wake_queue(sc->hw, q);
- txq->stopped = false;
- }
}
__skb_queue_tail(&txq->complete_q, skb);