From patchwork Wed Nov 11 15:40:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Marvin Liu X-Patchwork-Id: 84024 X-Patchwork-Delegate: maxime.coquelin@redhat.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id D9F84A09D9; Wed, 11 Nov 2020 16:40:16 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id B868156A3; Wed, 11 Nov 2020 16:40:15 +0100 (CET) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 2179A58C4 for ; Wed, 11 Nov 2020 16:40:13 +0100 (CET) IronPort-SDR: MBBPu54Lh81uWi5XHnHVpH1IrhcANSDXlwz9beqqit8i5CnTVhSp2yilPiJwMh3CK+q/jDguVM 11CkJRxetVQg== X-IronPort-AV: E=McAfee;i="6000,8403,9801"; a="167579785" X-IronPort-AV: E=Sophos;i="5.77,469,1596524400"; d="scan'208";a="167579785" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Nov 2020 07:40:11 -0800 IronPort-SDR: ZRctN9wWuULxg6/b3awha45JCpK97nc7xGXMTYYnYeEk7elfmxBKY6Kj8tXPv4mA7HQZOJOsSd +jwa8fb4VnVw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,469,1596524400"; d="scan'208";a="541847869" Received: from npg-dpdk-virtual-marvin-dev.sh.intel.com ([10.67.119.56]) by orsmga005.jf.intel.com with ESMTP; 11 Nov 2020 07:40:10 -0800 From: Marvin Liu To: maxime.coquelin@redhat.com, chenbo.xia@intel.com Cc: dev@dpdk.org, Marvin Liu Date: Wed, 11 Nov 2020 23:40:07 +0800 Message-Id: <20201111154007.13426-1-yong.liu@intel.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH] net/virtio: enable packet data prefetch on x86 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 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" Data prefetch instruction can preload data into cpu’s hierarchical cache before data access. Virtio datapath utilized this feature for data access acceleration. As config RTE_PMD_PACKET_PREFETCH was discarded, now packet data prefetch is enabled based on architecture. Signed-off-by: Marvin Liu diff --git a/drivers/net/virtio/virtqueue.h b/drivers/net/virtio/virtqueue.h index 42c4c9882..0196290a5 100644 --- a/drivers/net/virtio/virtqueue.h +++ b/drivers/net/virtio/virtqueue.h @@ -106,7 +106,7 @@ virtqueue_store_flags_packed(struct vring_packed_desc *dp, dp->flags = flags; } } -#ifdef RTE_PMD_PACKET_PREFETCH +#if defined(RTE_ARCH_X86) #define rte_packet_prefetch(p) rte_prefetch1(p) #else #define rte_packet_prefetch(p) do {} while(0)