From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69139C4361B for ; Tue, 15 Dec 2020 14:45:25 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 21DD8223D6 for ; Tue, 15 Dec 2020 14:45:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 21DD8223D6 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=virtualization-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 0C4A186E34; Tue, 15 Dec 2020 14:45:25 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id LsaTdv35NPgv; Tue, 15 Dec 2020 14:45:24 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id 942F686E47; Tue, 15 Dec 2020 14:45:24 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 7FE62C0893; Tue, 15 Dec 2020 14:45:24 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id D3075C013B for ; Tue, 15 Dec 2020 14:45:23 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id BEEE686E47 for ; Tue, 15 Dec 2020 14:45:23 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5M0B0D0QjFkW for ; Tue, 15 Dec 2020 14:45:23 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [63.128.21.124]) by fraxinus.osuosl.org (Postfix) with ESMTPS id 15C7386E34 for ; Tue, 15 Dec 2020 14:45:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1608043522; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/v7TjZoHK7SUgKoEpQNmto82yYxN7Hm3NV55qpnAAYk=; b=Rp8N2Fol7duVtuYxju9FCJrsMe+9r7kFcwc7A9Ipbu5zHtJZ2ukg+xsTp/wY4sRHoPWraG Owdu9wIGxjNDxL/wSFKrtYwdeW5pkBMQjvQIoqlQsTbzv6VMl1vSa+UEWzYP28W1j0/bXV AZOQFd3T4v3yFKIlqUG856C4OpT9OTA= 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-334-6_fCJYOsNmqiRGrqR05V7g-1; Tue, 15 Dec 2020 09:45:17 -0500 X-MC-Unique: 6_fCJYOsNmqiRGrqR05V7g-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 435F6801AC3; Tue, 15 Dec 2020 14:45:16 +0000 (UTC) Received: from steredhat.redhat.com (ovpn-115-49.ams2.redhat.com [10.36.115.49]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6B38B60C15; Tue, 15 Dec 2020 14:45:13 +0000 (UTC) From: Stefano Garzarella To: virtualization@lists.linux-foundation.org Subject: [PATCH v4 14/18] vdpa_sim: set vringh notify callback Date: Tue, 15 Dec 2020 15:42:52 +0100 Message-Id: <20201215144256.155342-15-sgarzare@redhat.com> In-Reply-To: <20201215144256.155342-1-sgarzare@redhat.com> References: <20201215144256.155342-1-sgarzare@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Cc: Laurent Vivier , Max Gurtovoy , "Michael S. Tsirkin" , Randy Dunlap , linux-kernel@vger.kernel.org, Shahaf Shuler , Stefan Hajnoczi , Eli Cohen , Oren Duer X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" Instead of calling the vq callback directly, we can leverage the vringh_notify() function, adding vdpasim_vq_notify() and setting it in the vringh notify callback. Suggested-by: Jason Wang Acked-by: Jason Wang Signed-off-by: Stefano Garzarella --- v3: - cleared notify during reset [Jason] --- drivers/vdpa/vdpa_sim/vdpa_sim.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c index e219aa852ef8..19ff5e352782 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -131,6 +131,17 @@ static struct vdpasim *dev_to_sim(struct device *dev) return vdpa_to_sim(vdpa); } +static void vdpasim_vq_notify(struct vringh *vring) +{ + struct vdpasim_virtqueue *vq = + container_of(vring, struct vdpasim_virtqueue, vring); + + if (!vq->cb) + return; + + vq->cb(vq->private); +} + static void vdpasim_queue_ready(struct vdpasim *vdpasim, unsigned int idx) { struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx]; @@ -142,6 +153,8 @@ static void vdpasim_queue_ready(struct vdpasim *vdpasim, unsigned int idx) (uintptr_t)vq->driver_addr, (struct vring_used *) (uintptr_t)vq->device_addr); + + vq->vring.notify = vdpasim_vq_notify; } static void vdpasim_vq_reset(struct vdpasim *vdpasim, @@ -155,6 +168,8 @@ static void vdpasim_vq_reset(struct vdpasim *vdpasim, vq->private = NULL; vringh_init_iotlb(&vq->vring, vdpasim->dev_attr.supported_features, VDPASIM_QUEUE_MAX, false, NULL, NULL, NULL); + + vq->vring.notify = NULL; } static void vdpasim_reset(struct vdpasim *vdpasim) @@ -231,10 +246,10 @@ static void vdpasim_net_work(struct work_struct *work) smp_wmb(); local_bh_disable(); - if (txq->cb) - txq->cb(txq->private); - if (rxq->cb) - rxq->cb(rxq->private); + if (vringh_need_notify_iotlb(&txq->vring) > 0) + vringh_notify(&txq->vring); + if (vringh_need_notify_iotlb(&rxq->vring) > 0) + vringh_notify(&rxq->vring); local_bh_enable(); if (++pkts > 4) { -- 2.26.2 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization