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ath11k: remove unused tx ring counters

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remove unused counter to avoid taking locks inorder to optimize
cpu load.

Using Flamegraph, cpu usage of ath11k_dp_tx() observed to be decreased
from 5.58% to 3.74% with iperf traffic running with 80MHz bandwidth ap
mode.

Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Pradeep Kumar Chitrapu 2019-11-27 18:30:01 +02:00 committed by Kalle Valo
parent f1d34a01ed
commit d12ac6c47a
2 changed files with 0 additions and 8 deletions
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1
drivers/net/wireless/ath/ath11k/dp.h
View File

@ -63,7 +63,6 @@ struct dp_tx_ring {
struct dp_srng tcl_data_ring;
struct dp_srng tcl_comp_ring;
struct idr txbuf_idr;
u32 num_tx_pending;
/* Protects txbuf_idr and num_pending */
spinlock_t tx_idr_lock;
DECLARE_KFIFO_PTR(tx_status_fifo, struct hal_wbm_release_ring);

7
drivers/net/wireless/ath/ath11k/dp_tx.c
View File

@ -196,10 +196,6 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif,
spin_unlock_bh(&tcl_ring->lock);
spin_lock_bh(&tx_ring->tx_idr_lock);
tx_ring->num_tx_pending++;
spin_unlock_bh(&tx_ring->tx_idr_lock);
atomic_inc(&ar->dp.num_tx_pending);
return 0;
@ -236,7 +232,6 @@ static void ath11k_dp_tx_free_txbuf(struct ath11k_base *ab, u8 mac_id,
skb_cb = ATH11K_SKB_CB(msdu);
idr_remove(&tx_ring->txbuf_idr, msdu_id);
tx_ring->num_tx_pending--;
spin_unlock_bh(&tx_ring->tx_idr_lock);
dma_unmap_single(ab->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
@ -272,7 +267,6 @@ ath11k_dp_tx_htt_tx_complete_buf(struct ath11k_base *ab,
ar = skb_cb->ar;
idr_remove(&tx_ring->txbuf_idr, ts->msdu_id);
tx_ring->num_tx_pending--;
spin_unlock_bh(&tx_ring->tx_idr_lock);
if (atomic_dec_and_test(&ar->dp.num_tx_pending))
@ -495,7 +489,6 @@ void ath11k_dp_tx_completion_handler(struct ath11k_base *ab, int ring_id)
continue;
}
idr_remove(&tx_ring->txbuf_idr, msdu_id);
tx_ring->num_tx_pending--;
spin_unlock_bh(&tx_ring->tx_idr_lock);
ar = ab->pdevs[mac_id].ar;