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Commit fb9829e9 authored by Ping-Ke Shih's avatar Ping-Ke Shih Committed by Kalle Valo
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rtlwifi: Reduce IO in RX interrupt to boost throughput 



Check remaining count of RX packets cost a lot of CPU time, so only update
when the counter decreases to zero. In old flow, the counter was updated
once a RX packet is received.

Signed-off-by: default avatarSteven Ting <steventing@realtek.com>
Signed-off-by: default avatarPing-Ke Shih <pkshih@realtek.com>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
parent 78aa6012

drivers/net/wireless/realtek/rtlwifi/pci.c

+3 −2
Original line number Diff line number Diff line
@@ -747,7 +747,7 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw) 
	u8 tmp_one;

	bool unicast = false;

	u8 hw_queue = 0;

	unsigned int rx_remained_cnt;

	unsigned int rx_remained_cnt = 0;

	struct rtl_stats stats = {

		.signal = 0,

		.rate = 0,
@@ -768,6 +768,7 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw) 
		struct sk_buff *new_skb;



		if (rtlpriv->use_new_trx_flow) {

			if (rx_remained_cnt == 0)

				rx_remained_cnt =

				rtlpriv->cfg->ops->rx_desc_buff_remained_cnt(hw,

								      hw_queue);