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 Received: from smtp4.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 smtp.lore.kernel.org (Postfix) with ESMTPS id 97E2DC4332F for ; Wed, 9 Feb 2022 12:29:13 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 5413041578; Wed, 9 Feb 2022 12:29:13 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8jQpNUh_np0B; Wed, 9 Feb 2022 12:29:12 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp4.osuosl.org (Postfix) with ESMTPS id 0BE8941577; Wed, 9 Feb 2022 12:29:11 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id E3560C0011; Wed, 9 Feb 2022 12:29:11 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [IPv6:2605:bc80:3010::136]) by lists.linuxfoundation.org (Postfix) with ESMTP id A6316C0077 for ; Wed, 9 Feb 2022 12:29:10 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id A182D60F40 for ; Wed, 9 Feb 2022 12:29:10 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id QXOX1n4NDdsQ for ; Wed, 9 Feb 2022 12:29:09 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from out30-42.freemail.mail.aliyun.com (out30-42.freemail.mail.aliyun.com [115.124.30.42]) by smtp3.osuosl.org (Postfix) with ESMTPS id D68A560B58 for ; Wed, 9 Feb 2022 12:29:08 +0000 (UTC) X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R461e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e04394; MF=xuanzhuo@linux.alibaba.com; NM=1; PH=DS; RN=4; SR=0; TI=SMTPD_---0V4.8o.9_1644409744; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0V4.8o.9_1644409744) by smtp.aliyun-inc.com(127.0.0.1); Wed, 09 Feb 2022 20:29:05 +0800 From: Xuan Zhuo To: linux-kernel@vger.kernel.org Subject: [PATCH v4 04/14] virtio_ring: queue_reset: split: add __vring_init_virtqueue() Date: Wed, 9 Feb 2022 20:28:51 +0800 Message-Id: <20220209122901.51790-5-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20220209122901.51790-1-xuanzhuo@linux.alibaba.com> References: <20220209122901.51790-1-xuanzhuo@linux.alibaba.com> MIME-Version: 1.0 Cc: virtualization@lists.linux-foundation.org, "Michael S. Tsirkin" 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" Extract vq's initialization function __vring_init_virtqueue() from __vring_new_virtqueue() Signed-off-by: Xuan Zhuo --- drivers/virtio/virtio_ring.c | 61 +++++++++++++++++++++++++----------- 1 file changed, 42 insertions(+), 19 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 766f4fd8cf06..30be9173c263 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -2167,23 +2167,17 @@ irqreturn_t vring_interrupt(int irq, void *_vq) EXPORT_SYMBOL_GPL(vring_interrupt); /* Only available for split ring */ -struct virtqueue *__vring_new_virtqueue(unsigned int index, - struct vring vring, - struct virtio_device *vdev, - bool weak_barriers, - bool context, - bool (*notify)(struct virtqueue *), - void (*callback)(struct virtqueue *), - const char *name) +static int __vring_init_virtqueue(struct virtqueue *_vq, + unsigned int index, + struct vring vring, + struct virtio_device *vdev, + bool weak_barriers, + bool context, + bool (*notify)(struct virtqueue *), + void (*callback)(struct virtqueue *), + const char *name) { - struct vring_virtqueue *vq; - - if (virtio_has_feature(vdev, VIRTIO_F_RING_PACKED)) - return NULL; - - vq = kmalloc(sizeof(*vq), GFP_KERNEL); - if (!vq) - return NULL; + struct vring_virtqueue *vq = to_vvq(_vq); vq->packed_ring = false; vq->vq.callback = callback; @@ -2243,13 +2237,42 @@ struct virtqueue *__vring_new_virtqueue(unsigned int index, spin_lock(&vdev->vqs_list_lock); list_add_tail(&vq->vq.list, &vdev->vqs); spin_unlock(&vdev->vqs_list_lock); - return &vq->vq; + return 0; err_extra: kfree(vq->split.desc_state); err_state: - kfree(vq); - return NULL; + return -ENOMEM; +} + +struct virtqueue *__vring_new_virtqueue(unsigned int index, + struct vring vring, + struct virtio_device *vdev, + bool weak_barriers, + bool context, + bool (*notify)(struct virtqueue *), + void (*callback)(struct virtqueue *), + const char *name) +{ + struct vring_virtqueue *vq; + int err; + + if (virtio_has_feature(vdev, VIRTIO_F_RING_PACKED)) + return NULL; + + vq = kmalloc(sizeof(*vq), GFP_KERNEL); + if (!vq) + return NULL; + + err = __vring_init_virtqueue(&vq->vq, index, vring, vdev, weak_barriers, + context, notify, callback, name); + + if (err) { + kfree(vq); + return NULL; + } + + return &vq->vq; } EXPORT_SYMBOL_GPL(__vring_new_virtqueue); -- 2.31.0 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization