From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 5DAFDA0A02; Fri, 26 Mar 2021 12:02:54 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 540C9140DD9; Fri, 26 Mar 2021 12:02:24 +0100 (CET) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [63.128.21.124]) by mails.dpdk.org (Postfix) with ESMTP id 4C08D140DBC for ; Fri, 26 Mar 2021 12:02:22 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1616756541; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=sAZYtpWLO7mGMaSsbXsQHbraEkk1Bj6U2vZcikRSkkc=; b=X3gl1awnsJkRdEKD2cx75SanFLy6kTuHUybCXuK8s6Pjuj0NEK+D/72xqUKo9Pxm/t24xg mRnlMOeCSnN3VyNqI1jmnKLWW40OZwVeQMh2oIKfxK2PvNCImaYG4XWe4LhFpuFMbCAxyn pWq/K1ont3LU3bTICMIb5jy1kMBSasM= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-452-DyniDiwMPu6x65-w-PHsuA-1; Fri, 26 Mar 2021 07:02:20 -0400 X-MC-Unique: DyniDiwMPu6x65-w-PHsuA-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id EA05610AF381; Fri, 26 Mar 2021 11:02:18 +0000 (UTC) Received: from bnemeth.users.ipa.redhat.com (ovpn-114-31.ams2.redhat.com [10.36.114.31]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9A1C5369A; Fri, 26 Mar 2021 11:02:17 +0000 (UTC) From: Balazs Nemeth To: bnemeth@redhat.com, dev@dpdk.org Cc: dsinghrawat@marvell.com, rmody@marvell.com, jerinjacobk@gmail.com, irusskikh@marvell.com Date: Fri, 26 Mar 2021 12:01:29 +0100 Message-Id: <0451d740c7207319f7aa09d9f73adefdee9efd4c.1616754844.git.bnemeth@redhat.com> In-Reply-To: References: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=bnemeth@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Subject: [dpdk-dev] [PATCH v2 6/7] net/qede: prefetch next packet to free X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" While handling the current mbuf, pull the next mbuf into the cache. Note that the last four mbufs pulled into the cache are not handled, but that doesn't matter. Signed-off-by: Balazs Nemeth Reviewed-by: Igor Russkikh --- drivers/net/qede/qede_rxtx.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c index 4f58abfbf..ed3617160 100644 --- a/drivers/net/qede/qede_rxtx.c +++ b/drivers/net/qede/qede_rxtx.c @@ -917,6 +917,12 @@ qede_process_tx_compl(__rte_unused struct ecore_dev *edev, nb_segs = mbuf->nb_segs; remaining -= nb_segs; + /* Prefetch the next mbuf. Note that at least the last 4 mbufs + * that are prefetched will not be used in the current call. + */ + rte_mbuf_prefetch_part1(txq->sw_tx_ring[(idx + 4) & mask]); + rte_mbuf_prefetch_part2(txq->sw_tx_ring[(idx + 4) & mask]); + PMD_TX_LOG(DEBUG, txq, "nb_segs to free %u\n", nb_segs); while (nb_segs) { -- 2.30.2