From patchwork Mon Aug 1 06:38:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 12933479 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 301ECC19F2C for ; Mon, 1 Aug 2022 06:40:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236183AbiHAGkF (ORCPT ); Mon, 1 Aug 2022 02:40:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33018 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235971AbiHAGjm (ORCPT ); Mon, 1 Aug 2022 02:39:42 -0400 Received: from out30-132.freemail.mail.aliyun.com (out30-132.freemail.mail.aliyun.com [115.124.30.132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DBEDB140C8; Sun, 31 Jul 2022 23:39:25 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R751e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018045170;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=37;SR=0;TI=SMTPD_---0VL1srZ7_1659335957; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0VL1srZ7_1659335957) by smtp.aliyun-inc.com; Mon, 01 Aug 2022 14:39:19 +0800 From: Xuan Zhuo To: virtualization@lists.linux-foundation.org Cc: Richard Weinberger , Anton Ivanov , Johannes Berg , "Michael S. Tsirkin" , Jason Wang , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Hans de Goede , Mark Gross , Vadim Pasternak , Bjorn Andersson , Mathieu Poirier , Cornelia Huck , Halil Pasic , Eric Farman , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Xuan Zhuo , Vincent Whitchurch , linux-um@lists.infradead.org, netdev@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org, kvm@vger.kernel.org, bpf@vger.kernel.org, kangjie.xu@linux.alibaba.com Subject: [PATCH v14 08/42] virtio_ring: split: __vring_new_virtqueue() accept struct vring_virtqueue_split Date: Mon, 1 Aug 2022 14:38:28 +0800 Message-Id: <20220801063902.129329-9-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20220801063902.129329-1-xuanzhuo@linux.alibaba.com> References: <20220801063902.129329-1-xuanzhuo@linux.alibaba.com> MIME-Version: 1.0 X-Git-Hash: 0f12e405b061 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org __vring_new_virtqueue() instead accepts struct vring_virtqueue_split. The purpose of this is to pass more information into __vring_new_virtqueue() to make the code simpler and the structure cleaner. Signed-off-by: Xuan Zhuo Acked-by: Jason Wang --- drivers/virtio/virtio_ring.c | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 8ce6cc73d814..1d51ed46b295 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -205,7 +205,7 @@ struct vring_virtqueue { }; static struct virtqueue *__vring_new_virtqueue(unsigned int index, - struct vring vring, + struct vring_virtqueue_split *vring_split, struct virtio_device *vdev, bool weak_barriers, bool context, @@ -949,6 +949,7 @@ static struct virtqueue *vring_create_virtqueue_split( void (*callback)(struct virtqueue *), const char *name) { + struct vring_virtqueue_split vring_split = {}; struct virtqueue *vq; void *queue = NULL; dma_addr_t dma_addr; @@ -984,10 +985,10 @@ static struct virtqueue *vring_create_virtqueue_split( return NULL; queue_size_in_bytes = vring_size(num, vring_align); - vring_init(&vring, num, queue, vring_align); + vring_init(&vring_split.vring, num, queue, vring_align); - vq = __vring_new_virtqueue(index, vring, vdev, weak_barriers, context, - notify, callback, name); + vq = __vring_new_virtqueue(index, &vring_split, vdev, weak_barriers, + context, notify, callback, name); if (!vq) { vring_free_queue(vdev, queue_size_in_bytes, queue, dma_addr); @@ -2204,7 +2205,7 @@ EXPORT_SYMBOL_GPL(vring_interrupt); /* Only available for split ring */ static struct virtqueue *__vring_new_virtqueue(unsigned int index, - struct vring vring, + struct vring_virtqueue_split *vring_split, struct virtio_device *vdev, bool weak_barriers, bool context, @@ -2246,7 +2247,7 @@ static struct virtqueue *__vring_new_virtqueue(unsigned int index, vq->split.queue_dma_addr = 0; vq->split.queue_size_in_bytes = 0; - vq->split.vring = vring; + vq->split.vring = vring_split->vring; vq->split.avail_flags_shadow = 0; vq->split.avail_idx_shadow = 0; @@ -2258,21 +2259,21 @@ static struct virtqueue *__vring_new_virtqueue(unsigned int index, vq->split.avail_flags_shadow); } - vq->split.desc_state = kmalloc_array(vring.num, + vq->split.desc_state = kmalloc_array(vring_split->vring.num, sizeof(struct vring_desc_state_split), GFP_KERNEL); if (!vq->split.desc_state) goto err_state; - vq->split.desc_extra = vring_alloc_desc_extra(vring.num); + vq->split.desc_extra = vring_alloc_desc_extra(vring_split->vring.num); if (!vq->split.desc_extra) goto err_extra; /* Put everything in free lists. */ vq->free_head = 0; - memset(vq->split.desc_state, 0, vring.num * + memset(vq->split.desc_state, 0, vring_split->vring.num * sizeof(struct vring_desc_state_split)); - virtqueue_init(vq, vring.num); + virtqueue_init(vq, vring_split->vring.num); spin_lock(&vdev->vqs_list_lock); list_add_tail(&vq->vq.list, &vdev->vqs); @@ -2322,14 +2323,14 @@ struct virtqueue *vring_new_virtqueue(unsigned int index, void (*callback)(struct virtqueue *vq), const char *name) { - struct vring vring; + struct vring_virtqueue_split vring_split = {}; if (virtio_has_feature(vdev, VIRTIO_F_RING_PACKED)) return NULL; - vring_init(&vring, num, pages, vring_align); - return __vring_new_virtqueue(index, vring, vdev, weak_barriers, context, - notify, callback, name); + vring_init(&vring_split.vring, num, pages, vring_align); + return __vring_new_virtqueue(index, &vring_split, vdev, weak_barriers, + context, notify, callback, name); } EXPORT_SYMBOL_GPL(vring_new_virtqueue);