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- From: Michal Kazior <[email protected]>
- Date: Mon, 23 May 2016 23:12:45 +0300
- Subject: [PATCH] ath10k: improve tx scheduling
- 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 <[email protected]>
- Signed-off-by: Kalle Valo <[email protected]>
- ---
- --- a/drivers/net/wireless/ath/ath10k/htt_rx.c
- +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
- @@ -2291,7 +2291,6 @@ bool ath10k_htt_t2h_msg_handler(struct a
- 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(u
- dev_kfree_skb_any(skb);
- }
-
- - ath10k_mac_tx_push_pending(ar);
- -
- num_mpdus = atomic_read(&htt->num_mpdus_ready);
-
- while (num_mpdus) {
- --- a/drivers/net/wireless/ath/ath10k/mac.c
- +++ b/drivers/net/wireless/ath/ath10k/mac.c
- @@ -3827,6 +3827,9 @@ void ath10k_mac_tx_push_pending(struct a
- 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();
-
- @@ -4097,9 +4100,7 @@ static void ath10k_mac_op_wake_tx_queue(
- 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);
- }
-
- --- a/drivers/net/wireless/ath/ath10k/txrx.c
- +++ b/drivers/net/wireless/ath/ath10k/txrx.c
- @@ -117,6 +117,9 @@ int ath10k_txrx_tx_unref(struct ath10k_h
-
- ieee80211_tx_status(htt->ar->hw, msdu);
- /* we do not own the msdu anymore */
- +
- + ath10k_mac_tx_push_pending(ar);
- +
- return 0;
- }
-
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