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 43C05A0562; Tue, 4 May 2021 10:29:10 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 30ADE40147; Tue, 4 May 2021 10:29:10 +0200 (CEST) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by mails.dpdk.org (Postfix) with ESMTP id 8C4EF40141 for ; Tue, 4 May 2021 10:29:08 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1620116948; 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=BrUoRCd8c4bU8bBEX025TZKlWrCHRdwcLuQkGn6k0ck=; b=h9Rd6mkYyS6t+ANc1XLbv871Rk3zcyna+QGCx9mjjXRmeP2ZbSdkjQnHMGyexZX9p8kU7+ 8EdCDNSgyvt36tuxJlsnKHOk4SEz4J2dYpAf3v9NmUlCImuSsewVmbPFWAKVMVwZZS8cLf ijCIyu2enHHidltq+2tl0O5g2d4HAFk= 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-208-vpS4YGKoO3yuyK4cB8Lxdw-1; Tue, 04 May 2021 04:29:04 -0400 X-MC-Unique: vpS4YGKoO3yuyK4cB8Lxdw-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 7F2AA801817; Tue, 4 May 2021 08:29:03 +0000 (UTC) Received: from [10.36.110.22] (unknown [10.36.110.22]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2DBE35C3DF; Tue, 4 May 2021 08:29:02 +0000 (UTC) To: Matan Azrad , dev@dpdk.org Cc: thomas@monjalon.net, chenbo.xia@intel.com, Xueming Li References: <1616058798-303292-1-git-send-email-matan@nvidia.com> <20210502104510.3102095-1-matan@nvidia.com> From: Maxime Coquelin Message-ID: Date: Tue, 4 May 2021 10:29:00 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <20210502104510.3102095-1-matan@nvidia.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=maxime.coquelin@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [PATCH v2] vdpa/mlx5: improve interrupt management 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" On 5/2/21 12:45 PM, Matan Azrad wrote: > The driver should notify the guest for each traffic burst detected by CQ > polling. > > The CQ polling trigger is defined by `event_mode` device argument, > either by busy polling on all the CQs or by blocked call to HW > completion event using DevX channel. > > Also, the polling event modes can move to blocked call when the > traffic rate is low. > > The current blocked call uses the EAL interrupt API suffering a lot > of overhead in the API management and serve all the drivers and > libraries using only single thread. > > Use blocking FD of the DevX channel in order to do blocked call > directly by the DevX channel FD mechanism. > > Signed-off-by: Matan Azrad > Acked-by: Xueming Li > --- > doc/guides/vdpadevs/mlx5.rst | 8 +- > drivers/vdpa/mlx5/mlx5_vdpa.c | 8 +- > drivers/vdpa/mlx5/mlx5_vdpa.h | 8 +- > drivers/vdpa/mlx5/mlx5_vdpa_event.c | 304 +++++++++++----------------- > 4 files changed, 130 insertions(+), 198 deletions(-) > > v2: > Rebased on top of latest updates by Thomas. > Applied to dpdk-next-virtio/main. Thanks, Maxime