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ath10k: improve tx scheduling

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Recent changes revolving around implementing
wake_tx_queue support introduced a significant
performance regressions on some (slower, uni-proc)
systems.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Michal Kazior 2016-05-23 23:12:45 +03:00 committed by Kalle Valo
parent 651b4cdcf9
commit 7a0adc83f3
3 changed files with 7 additions and 6 deletions
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3
drivers/net/wireless/ath/ath10k/htt_rx.c
View File

@ -2291,7 +2291,6 @@ bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb)
ath10k_htt_tx_mgmt_dec_pending(htt);
spin_unlock_bh(&htt->tx_lock);
}
ath10k_mac_tx_push_pending(ar);
break;
}
case HTT_T2H_MSG_TYPE_TX_COMPL_IND:
@ -2442,8 +2441,6 @@ static void ath10k_htt_txrx_compl_task(unsigned long ptr)
dev_kfree_skb_any(skb);
}
ath10k_mac_tx_push_pending(ar);
num_mpdus = atomic_read(&htt->num_mpdus_ready);
while (num_mpdus) {

7
drivers/net/wireless/ath/ath10k/mac.c
View File

@ -3781,6 +3781,9 @@ void ath10k_mac_tx_push_pending(struct ath10k *ar)
int ret;
int max;
if (ar->htt.num_pending_tx >= (ar->htt.max_num_pending_tx / 2))
return;
spin_lock_bh(&ar->txqs_lock);
rcu_read_lock();
@ -4051,9 +4054,7 @@ static void ath10k_mac_op_wake_tx_queue(struct ieee80211_hw *hw,
list_add_tail(&artxq->list, &ar->txqs);
spin_unlock_bh(&ar->txqs_lock);
if (ath10k_mac_tx_can_push(hw, txq))
tasklet_schedule(&ar->htt.txrx_compl_task);
ath10k_mac_tx_push_pending(ar);
ath10k_htt_tx_txq_update(hw, txq);
}

3
drivers/net/wireless/ath/ath10k/txrx.c
View File

@ -117,6 +117,9 @@ int ath10k_txrx_tx_unref(struct ath10k_htt *htt,
ieee80211_tx_status(htt->ar->hw, msdu);
/* we do not own the msdu anymore */
ath10k_mac_tx_push_pending(ar);
return 0;
}