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authorFelix Fietkau <nbd@openwrt.org>2012-03-13 11:19:19 +0000
committerFelix Fietkau <nbd@openwrt.org>2012-03-13 11:19:19 +0000
commitdce6ee5830d79c038011ade15b970448a8215a3c (patch)
tree5ca73a66f6d892b4670c7b5e3ba4ee341209d2a6 /package/mac80211/patches
parentb387cfd6e4a6b211061db56495d9b96570b9e634 (diff)
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ath9k: optimize waking tx queues, slightly improves performance under load
SVN-Revision: 30918
Diffstat (limited to 'package/mac80211/patches')
-rw-r--r--package/mac80211/patches/565-ath9k_optimize_queue_wake.patch39
1 files changed, 39 insertions, 0 deletions
diff --git a/package/mac80211/patches/565-ath9k_optimize_queue_wake.patch b/package/mac80211/patches/565-ath9k_optimize_queue_wake.patch
new file mode 100644
index 0000000..e04ffaa
--- /dev/null
+++ b/package/mac80211/patches/565-ath9k_optimize_queue_wake.patch
@@ -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);