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 9AAA5A0A02; Fri, 26 Mar 2021 12:02:47 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 11D76140DC9; Fri, 26 Mar 2021 12:02:23 +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 BCDDC140DB9 for ; Fri, 26 Mar 2021 12:02:20 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1616756540; 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=uh7e1gsjMthUFVB/YBNaTBWPr3JzNZAm9Kv2PY2ZAe4=; b=XOyuxb1nmxMerg2eZWuE1jojhn9mLRB+9kXormelAj6jRqmKRVGcVl9VNEITXQd2MUjrST K3Lv6+Mq3WhP1zcgUrSoEGwNqm/jp910f5hdggI/5QVoRBZSmzOSg7iYD5NdQutj/ICNub qLCI//eBeBI1BeS/RB0tuBSg4WmQLBY= 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-390-8lolUaADNqStld5qTK1fbg-1; Fri, 26 Mar 2021 07:02:18 -0400 X-MC-Unique: 8lolUaADNqStld5qTK1fbg-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 3F73310AF380; Fri, 26 Mar 2021 11:02:17 +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 C098D369A; Fri, 26 Mar 2021 11:02:15 +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 12:01:28 +0100 Message-Id: <3aed2588b66f2b584237bf6037d71e8b4c791d3e.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 5/7] net/qede: prefetch hardware consumer 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" Ensure that, while ecore_chain_get_cons_idx is running, txq->hw_cons_ptr is prefetched. This shows a slight performance improvement. Signed-off-by: Balazs Nemeth Reviewed-by: Igor Russkikh --- drivers/net/qede/qede_rxtx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c index f439ee056..4f58abfbf 100644 --- a/drivers/net/qede/qede_rxtx.c +++ b/drivers/net/qede/qede_rxtx.c @@ -896,6 +896,7 @@ qede_process_tx_compl(__rte_unused struct ecore_dev *edev, uint16_t first_idx; rte_compiler_barrier(); + rte_prefetch0(txq->hw_cons_ptr); sw_tx_cons = ecore_chain_get_cons_idx(&txq->tx_pbl); hw_bd_cons = rte_le_to_cpu_16(*txq->hw_cons_ptr); #ifdef RTE_LIBRTE_QEDE_DEBUG_TX -- 2.30.2