From patchwork Wed Feb 27 21:40:41 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 10832345 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B987F1669 for ; Wed, 27 Feb 2019 21:40:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A64962EBBC for ; Wed, 27 Feb 2019 21:40:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A423F2E8B1; Wed, 27 Feb 2019 21:40:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ED4A52EBC0 for ; Wed, 27 Feb 2019 21:40:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730363AbfB0Vk5 (ORCPT ); Wed, 27 Feb 2019 16:40:57 -0500 Received: from mail.kernel.org ([198.145.29.99]:36808 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727488AbfB0Vk5 (ORCPT ); Wed, 27 Feb 2019 16:40:57 -0500 Received: from lore-desk.lan (unknown [151.66.48.245]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AA74720863; Wed, 27 Feb 2019 21:40:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551303656; bh=0My3DrALWIusCRD4+BR3kQmYP+h6hyatHEzSS0in6lA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TLBrfbxcrUxYpi2+JUzrQlWtRSd9vb7CpCDqpxXlbAoqoTsPrUvOdNdVtYsoBj5Kn 1NNUlhWE1+F9d3VTmXxTC7YBoHb0pQiSHh56yy3un5U89sZH0a+1xKnfSaCq0d1UQl sDSe8yKpX4wpG4wCPmwhPKzledfAek6bHZn6DEbE= From: Lorenzo Bianconi To: nbd@nbd.name Cc: linux-wireless@vger.kernel.org, sgruszka@redhat.com, lorenzo.bianconi@redhat.com Subject: [PATCH] mt76: introduce q->stopped parameter Date: Wed, 27 Feb 2019 22:40:41 +0100 Message-Id: X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Introduce mt76_queue stopped parameter in order to run ieee80211_wake_queue only when mac80211 queues have been previously stopped and avoid to disable interrupts when it is not necessary. Move ieee80211_stop_queue out of q->lock critical section Signed-off-by: Lorenzo Bianconi --- drivers/net/wireless/mediatek/mt76/dma.c | 5 ++++- drivers/net/wireless/mediatek/mt76/mt76.h | 1 + drivers/net/wireless/mediatek/mt76/tx.c | 12 +++++++++--- drivers/net/wireless/mediatek/mt76/usb.c | 6 +++++- 4 files changed, 19 insertions(+), 5 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c index 6eedc0ec7661..99e341cb1f92 100644 --- a/drivers/net/wireless/mediatek/mt76/dma.c +++ b/drivers/net/wireless/mediatek/mt76/dma.c @@ -180,7 +180,10 @@ mt76_dma_tx_cleanup(struct mt76_dev *dev, enum mt76_txq_id qid, bool flush) else mt76_dma_sync_idx(dev, q); - wake = wake && qid < IEEE80211_NUM_ACS && q->queued < q->ndesc - 8; + wake = wake && q->stopped && + qid < IEEE80211_NUM_ACS && q->queued < q->ndesc - 8; + if (wake) + q->stopped = false; if (!q->queued) wake_up(&dev->tx_wait); diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h index 5dfb0601f101..3152b8c73c4a 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76.h +++ b/drivers/net/wireless/mediatek/mt76/mt76.h @@ -126,6 +126,7 @@ struct mt76_queue { int ndesc; int queued; int buf_size; + bool stopped; u8 buf_offset; u8 hw_idx; diff --git a/drivers/net/wireless/mediatek/mt76/tx.c b/drivers/net/wireless/mediatek/mt76/tx.c index 5a349fe3e576..97215c3a30d1 100644 --- a/drivers/net/wireless/mediatek/mt76/tx.c +++ b/drivers/net/wireless/mediatek/mt76/tx.c @@ -258,8 +258,9 @@ mt76_tx(struct mt76_dev *dev, struct ieee80211_sta *sta, { struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; - struct mt76_queue *q; int qid = skb_get_queue_mapping(skb); + struct mt76_queue *q; + bool stop; if (WARN_ON(qid >= MT_TXQ_PSD)) { qid = MT_TXQ_BE; @@ -289,9 +290,14 @@ mt76_tx(struct mt76_dev *dev, struct ieee80211_sta *sta, dev->queue_ops->tx_queue_skb(dev, q, skb, wcid, sta); dev->queue_ops->kick(dev, q); - if (q->queued > q->ndesc - 8) - ieee80211_stop_queue(dev->hw, skb_get_queue_mapping(skb)); + stop = q->queued > q->ndesc - 8 && !q->stopped; + if (stop) + q->stopped = true; + spin_unlock_bh(&q->lock); + + if (stop) + ieee80211_stop_queue(dev->hw, skb_get_queue_mapping(skb)); } EXPORT_SYMBOL_GPL(mt76_tx); diff --git a/drivers/net/wireless/mediatek/mt76/usb.c b/drivers/net/wireless/mediatek/mt76/usb.c index ae6ada370597..4c1abd492405 100644 --- a/drivers/net/wireless/mediatek/mt76/usb.c +++ b/drivers/net/wireless/mediatek/mt76/usb.c @@ -655,7 +655,11 @@ static void mt76u_tx_tasklet(unsigned long data) spin_lock_bh(&q->lock); } mt76_txq_schedule(dev, q); - wake = i < IEEE80211_NUM_ACS && q->queued < q->ndesc - 8; + + wake = q->stopped && q->queued < q->ndesc - 8; + if (wake) + q->stopped = false; + if (!q->queued) wake_up(&dev->tx_wait);