Re: [PATCH v13 07/42] virtio_ring: split: stop __vring_new_virtqueue as export symbol

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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@xxxxxxxxxxxxxxxxx>
---
  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@xxxxxxxxxx>


-	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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