diff options
| author | Felix Fietkau <nbd@nbd.name> | 2020-08-20 11:41:16 +0200 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2020-09-24 18:10:16 +0200 |
| commit | 0f1c443ca9cfa015f205bc003ddecc48531e511b (patch) | |
| tree | fbcd9f21e9eb4581a5ac0145f0b7ab36d27abbcb /drivers/net/wireless/mediatek/mt76/mt7915/mac.c | |
| parent | 68e6644bbd6eb1189b36e933b51632887838f825 (diff) | |
mt76: mt7915: optimize mt7915_mac_sta_poll
Since DMA completion does not imply tx completion, it makes more sense to
poll for airtime from mt7915_mac_tx_free.
Reduce the runtime of the function by moving all items from dev->sta_poll_list
to a local list once and process any stations that were added afterwards
on the next run
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7915/mac.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c index ff08a59c747c..06bb8d0103ba 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c @@ -97,7 +97,7 @@ static u32 mt7915_mac_wtbl_lmac_addr(struct mt7915_dev *dev, u16 wcid) } /* TODO: use txfree airtime info to avoid runtime accessing in the long run */ -void mt7915_mac_sta_poll(struct mt7915_dev *dev) +static void mt7915_mac_sta_poll(struct mt7915_dev *dev) { static const u8 ac_to_tid[] = { [IEEE80211_AC_BE] = 0, @@ -114,8 +114,13 @@ void mt7915_mac_sta_poll(struct mt7915_dev *dev) struct ieee80211_sta *sta; struct mt7915_sta *msta; u32 tx_time[IEEE80211_NUM_ACS], rx_time[IEEE80211_NUM_ACS]; + LIST_HEAD(sta_poll_list); int i; + spin_lock_bh(&dev->sta_poll_lock); + list_splice_init(&dev->sta_poll_list, &sta_poll_list); + spin_unlock_bh(&dev->sta_poll_lock); + rcu_read_lock(); while (true) { @@ -124,11 +129,11 @@ void mt7915_mac_sta_poll(struct mt7915_dev *dev) u16 idx; spin_lock_bh(&dev->sta_poll_lock); - if (list_empty(&dev->sta_poll_list)) { + if (list_empty(&sta_poll_list)) { spin_unlock_bh(&dev->sta_poll_lock); break; } - msta = list_first_entry(&dev->sta_poll_list, + msta = list_first_entry(&sta_poll_list, struct mt7915_sta, poll_list); list_del_init(&msta->poll_list); spin_unlock_bh(&dev->sta_poll_lock); @@ -929,6 +934,8 @@ void mt7915_mac_tx_free(struct mt7915_dev *dev, struct sk_buff *skb) mt76_put_txwi(mdev, txwi); } dev_kfree_skb(skb); + + mt7915_mac_sta_poll(dev); } void mt7915_tx_complete_skb(struct mt76_dev *mdev, enum mt76_txq_id qid, |