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Date: Wed, 27 Jul 2022 10:58:05 +0800
From: Jason Wang <jasowang@...hat.com>
To: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
virtualization@...ts.linux-foundation.org
Cc: Richard Weinberger <richard@....at>,
Anton Ivanov <anton.ivanov@...bridgegreys.com>,
Johannes Berg <johannes@...solutions.net>,
"Michael S. Tsirkin" <mst@...hat.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Hans de Goede <hdegoede@...hat.com>,
Mark Gross <markgross@...nel.org>,
Vadim Pasternak <vadimp@...dia.com>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Cornelia Huck <cohuck@...hat.com>,
Halil Pasic <pasic@...ux.ibm.com>,
Eric Farman <farman@...ux.ibm.com>,
Heiko Carstens <hca@...ux.ibm.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
Alexander Gordeev <agordeev@...ux.ibm.com>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Sven Schnelle <svens@...ux.ibm.com>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Jesper Dangaard Brouer <hawk@...nel.org>,
John Fastabend <john.fastabend@...il.com>,
Vincent Whitchurch <vincent.whitchurch@...s.com>,
linux-um@...ts.infradead.org, netdev@...r.kernel.org,
platform-driver-x86@...r.kernel.org,
linux-remoteproc@...r.kernel.org, linux-s390@...r.kernel.org,
kvm@...r.kernel.org, bpf@...r.kernel.org,
kangjie.xu@...ux.alibaba.com
Subject: Re: [PATCH v13 07/42] virtio_ring: split: stop __vring_new_virtqueue
as export symbol
在 2022/7/26 15:21, Xuan Zhuo 写道:
> There is currently only one place to reference __vring_new_virtqueue()
> directly from the outside of virtio core. And here vring_new_virtqueue()
> can be used instead.
>
> Subsequent patches will modify __vring_new_virtqueue, so stop it as an
> export symbol for now.
>
> Signed-off-by: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
> ---
> drivers/virtio/virtio_ring.c | 25 ++++++++++++++++---------
> include/linux/virtio_ring.h | 10 ----------
> tools/virtio/virtio_test.c | 4 ++--
> 3 files changed, 18 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
> index 0ad35eca0d39..4e54ed7ee7fb 100644
> --- a/drivers/virtio/virtio_ring.c
> +++ b/drivers/virtio/virtio_ring.c
> @@ -204,6 +204,14 @@ struct vring_virtqueue {
> #endif
> };
>
> +static 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);
>
> /*
> * Helpers.
> @@ -2197,14 +2205,14 @@ 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 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;
>
> @@ -2272,7 +2280,6 @@ struct virtqueue *__vring_new_virtqueue(unsigned int index,
> kfree(vq);
> return NULL;
> }
> -EXPORT_SYMBOL_GPL(__vring_new_virtqueue);
>
> struct virtqueue *vring_create_virtqueue(
> unsigned int index,
> diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h
> index b485b13fa50b..8b8af1a38991 100644
> --- a/include/linux/virtio_ring.h
> +++ b/include/linux/virtio_ring.h
> @@ -76,16 +76,6 @@ struct virtqueue *vring_create_virtqueue(unsigned int index,
> void (*callback)(struct virtqueue *vq),
> const char *name);
>
> -/* Creates a virtqueue with a custom layout. */
> -struct virtqueue *__vring_new_virtqueue(unsigned int index,
> - struct vring vring,
> - struct virtio_device *vdev,
> - bool weak_barriers,
> - bool ctx,
> - bool (*notify)(struct virtqueue *),
> - void (*callback)(struct virtqueue *),
> - const char *name);
> -
> /*
> * Creates a virtqueue with a standard layout but a caller-allocated
> * ring.
> diff --git a/tools/virtio/virtio_test.c b/tools/virtio/virtio_test.c
> index 23f142af544a..86a410ddcedd 100644
> --- a/tools/virtio/virtio_test.c
> +++ b/tools/virtio/virtio_test.c
> @@ -102,8 +102,8 @@ static void vq_reset(struct vq_info *info, int num, struct virtio_device *vdev)
>
> memset(info->ring, 0, vring_size(num, 4096));
> vring_init(&info->vring, num, info->ring, 4096);
Let's remove the duplicated vring_init() here.
With this removed:
Acked-by: Jason Wang <jasowang@...hat.com>
> - info->vq = __vring_new_virtqueue(info->idx, info->vring, vdev, true,
> - false, vq_notify, vq_callback, "test");
> + info->vq = vring_new_virtqueue(info->idx, num, 4096, vdev, true, false,
> + info->ring, vq_notify, vq_callback, "test");
> assert(info->vq);
> info->vq->priv = info;
> }
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