diff options
| author | Rajkumar Manoharan <rmanohar@qti.qualcomm.com> | 2015-10-06 12:19:33 (GMT) |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2015-10-09 08:35:47 (GMT) |
| commit | ab4e3db043589204041c00272f751d05b4e52c50 (patch) | |
| tree | 6829c58ebb20981027d19a7a1c3e4d6f33a9370c /drivers/net/wireless/ath/ath10k/ce.c | |
| parent | 39b91b8144e028cbe383548f76c1f8cdb7977532 (diff) | |
| download | linux-ab4e3db043589204041c00272f751d05b4e52c50.tar.xz | |
ath10k: optimize ce_lock on post rx buffer processing
After processing received packets from copy engine, host will allocate
new buffer and queue them back to copy engine ring for further
packet reception. On post rx processing path, skb allocation and
dma mapping are unnecessarily handled within ce_lock. This is affecting
peak throughput and also causing more CPU consumption. Optimize this
by acquiring ce_lock only when accessing copy engine ring and moving
skb allocation out of ce_lock.
In AP148 platform with QCA99x0 in conducted environment, UDP uplink peak
throughput is improved from ~1320 Mbps to ~1450 Mbps and TCP uplink peak
throughput is increased from ~1240 Mbps (70% host CPU load) to ~1300 Mbps
(71% CPU load). Similarly ~40Mbps improvement is observed in downlink
path.
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/ce.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/ce.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c index cf28fbe..8d7ab1c 100644 --- a/drivers/net/wireless/ath/ath10k/ce.c +++ b/drivers/net/wireless/ath/ath10k/ce.c @@ -413,7 +413,7 @@ int __ath10k_ce_rx_post_buf(struct ath10k_ce_pipe *pipe, void *ctx, u32 paddr) lockdep_assert_held(&ar_pci->ce_lock); if (CE_RING_DELTA(nentries_mask, write_index, sw_index - 1) == 0) - return -EIO; + return -ENOSPC; desc->addr = __cpu_to_le32(paddr); desc->nbytes = 0; |