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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AE1A5C4332F for ; Wed, 9 Feb 2022 12:29:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230181AbiBIM3P (ORCPT ); Wed, 9 Feb 2022 07:29:15 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52958 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232740AbiBIM3E (ORCPT ); Wed, 9 Feb 2022 07:29:04 -0500 Received: from out30-44.freemail.mail.aliyun.com (out30-44.freemail.mail.aliyun.com [115.124.30.44]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1885EC05CB97 for ; Wed, 9 Feb 2022 04:29:06 -0800 (PST) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R131e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04407;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=4;SR=0;TI=SMTPD_---0V4.Hs8d_1644409744; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0V4.Hs8d_1644409744) by smtp.aliyun-inc.com(127.0.0.1); Wed, 09 Feb 2022 20:29:04 +0800 From: Xuan Zhuo To: linux-kernel@vger.kernel.org Cc: "Michael S. Tsirkin" , Jason Wang , virtualization@lists.linux-foundation.org Subject: [PATCH v4 03/14] virtio_ring: queue_reset: add function vring_setup_virtqueue() Date: Wed, 9 Feb 2022 20:28:50 +0800 Message-Id: <20220209122901.51790-4-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 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Added function vring_setup_virtqueue() to allow passing existing vq without reallocating vq. The purpose of adding this function is to not break the form of vring_create_virtqueue(). Signed-off-by: Xuan Zhuo --- drivers/virtio/virtio_ring.c | 7 ++++--- include/linux/virtio_ring.h | 37 ++++++++++++++++++++++++++---------- 2 files changed, 31 insertions(+), 13 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 028b05d44546..766f4fd8cf06 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -2253,7 +2253,7 @@ struct virtqueue *__vring_new_virtqueue(unsigned int index, } EXPORT_SYMBOL_GPL(__vring_new_virtqueue); -struct virtqueue *vring_create_virtqueue( +struct virtqueue *vring_setup_virtqueue( unsigned int index, unsigned int num, unsigned int vring_align, @@ -2263,7 +2263,8 @@ struct virtqueue *vring_create_virtqueue( bool context, bool (*notify)(struct virtqueue *), void (*callback)(struct virtqueue *), - const char *name) + const char *name, + struct virtqueue *vq) { if (virtio_has_feature(vdev, VIRTIO_F_RING_PACKED)) @@ -2275,7 +2276,7 @@ struct virtqueue *vring_create_virtqueue( vdev, weak_barriers, may_reduce_num, context, notify, callback, name); } -EXPORT_SYMBOL_GPL(vring_create_virtqueue); +EXPORT_SYMBOL_GPL(vring_setup_virtqueue); /* Only available for split ring */ struct virtqueue *vring_new_virtqueue(unsigned int index, diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h index b485b13fa50b..e90323fce4bf 100644 --- a/include/linux/virtio_ring.h +++ b/include/linux/virtio_ring.h @@ -65,16 +65,33 @@ struct virtqueue; * expected. The caller should query virtqueue_get_vring_size to learn * the actual size of the ring. */ -struct virtqueue *vring_create_virtqueue(unsigned int index, - unsigned int num, - unsigned int vring_align, - struct virtio_device *vdev, - bool weak_barriers, - bool may_reduce_num, - bool ctx, - bool (*notify)(struct virtqueue *vq), - void (*callback)(struct virtqueue *vq), - const char *name); +struct virtqueue *vring_setup_virtqueue(unsigned int index, + unsigned int num, + unsigned int vring_align, + struct virtio_device *vdev, + bool weak_barriers, + bool may_reduce_num, + bool ctx, + bool (*notify)(struct virtqueue *vq), + void (*callback)(struct virtqueue *vq), + const char *name, + struct virtqueue *vq); + +static inline struct virtqueue *vring_create_virtqueue(unsigned int index, + unsigned int num, + unsigned int vring_align, + struct virtio_device *vdev, + bool weak_barriers, + bool may_reduce_num, + bool ctx, + bool (*notify)(struct virtqueue *vq), + void (*callback)(struct virtqueue *vq), + const char *name) +{ + return vring_setup_virtqueue(index, num, vring_align, vdev, + weak_barriers, may_reduce_num, ctx, + notify, callback, name, NULL); +} /* Creates a virtqueue with a custom layout. */ struct virtqueue *__vring_new_virtqueue(unsigned int index, -- 2.31.0