From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <dev-bounces@dpdk.org> Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 8F2E5A0562; Mon, 3 May 2021 16:28:06 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 1721C40150; Mon, 3 May 2021 16:28:06 +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 CF0AD4014E for <dev@dpdk.org>; Mon, 3 May 2021 16:28:04 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1620052084; 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=wyBCsPQQyazgFcaEjJ6bWN8eGl780lB6ckaEddZrj88=; b=hM4f7OqYTTcqnoL9x8or6qyLrkkXpngztphSmlZGUwITvomlXV7AbdzaOpYEusTES37XSl rMiD3iyyJFZUPdtaAK2eEJijUBvpfLQGJ4aH8nXsAAM3wweTghVQPBIXacw21pYb2lXY8R hoymfNF2DFvxITnM7fXyi9w4xqs5CE0= 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-38-OT-Sq-wqPdavTwX7D8f3RA-1; Mon, 03 May 2021 10:28:02 -0400 X-MC-Unique: OT-Sq-wqPdavTwX7D8f3RA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 1D8BC801106; Mon, 3 May 2021 14:28:01 +0000 (UTC) Received: from [10.36.110.22] (unknown [10.36.110.22]) by smtp.corp.redhat.com (Postfix) with ESMTPS id AC9F66061F; Mon, 3 May 2021 14:27:59 +0000 (UTC) To: Matan Azrad <matan@nvidia.com>, dev@dpdk.org Cc: thomas@monjalon.net, chenbo.xia@intel.com, Xueming Li <xuemingl@nvidia.com> References: <1616058798-303292-1-git-send-email-matan@nvidia.com> <20210502104510.3102095-1-matan@nvidia.com> From: Maxime Coquelin <maxime.coquelin@redhat.com> Message-ID: <933598d5-3933-6491-e763-0632f6a45a8e@redhat.com> Date: Mon, 3 May 2021 16:27:58 +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 10.5.11.13 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 <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org Sender: "dev" <dev-bounces@dpdk.org> 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 <matan@nvidia.com> > Acked-by: Xueming Li <xuemingl@nvidia.com> > --- > 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. > > Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com> Thanks, Maxime