[Qemu-devel] [PATCH 07/12] Revert "virtio: Introduce virtio_add_queue_aio"

[Paolo Bonzini <pbonzini@redhat.com>]

This reverts commit 872dd82c83745a603d2e07a03d34313eb6467ae4.
virtio_add_queue_aio is unused.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/virtio/virtio.c         | 38 ++++----------------------------------
 include/hw/virtio/virtio.h |  3 ---
 2 files changed, 4 insertions(+), 37 deletions(-)

diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 84abd08..d1cc2f5 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -97,7 +97,6 @@ struct VirtQueue
     uint16_t vector;
     VirtIOHandleOutput handle_output;
     VirtIOHandleOutput handle_aio_output;
-    bool use_aio;
     VirtIODevice *vdev;
     EventNotifier guest_notifier;
     EventNotifier host_notifier;
@@ -1141,9 +1140,8 @@ void virtio_queue_set_vector(VirtIODevice *vdev, int n, uint16_t vector)
     }
 }
 
-static VirtQueue *virtio_add_queue_internal(VirtIODevice *vdev, int queue_size,
-                                            VirtIOHandleOutput handle_output,
-                                            bool use_aio)
+VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size,
+                            VirtIOHandleOutput handle_output)
 {
     int i;
 
@@ -1160,28 +1158,10 @@ static VirtQueue *virtio_add_queue_internal(VirtIODevice *vdev, int queue_size,
     vdev->vq[i].vring.align = VIRTIO_PCI_VRING_ALIGN;
     vdev->vq[i].handle_output = handle_output;
     vdev->vq[i].handle_aio_output = NULL;
-    vdev->vq[i].use_aio = use_aio;
 
     return &vdev->vq[i];
 }
 
-/* Add a virt queue and mark AIO.
- * An AIO queue will use the AioContext based event interface instead of the
- * default IOHandler and EventNotifier interface.
- */
-VirtQueue *virtio_add_queue_aio(VirtIODevice *vdev, int queue_size,
-                                VirtIOHandleOutput handle_output)
-{
-    return virtio_add_queue_internal(vdev, queue_size, handle_output, true);
-}
-
-/* Add a normal virt queue (on the contrary to the AIO version above. */
-VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size,
-                            VirtIOHandleOutput handle_output)
-{
-    return virtio_add_queue_internal(vdev, queue_size, handle_output, false);
-}
-
 void virtio_del_queue(VirtIODevice *vdev, int n)
 {
     if (n < 0 || n >= VIRTIO_QUEUE_MAX) {
@@ -1866,21 +1846,11 @@ static void virtio_queue_host_notifier_read(EventNotifier *n)
 void virtio_queue_set_host_notifier_fd_handler(VirtQueue *vq, bool assign,
                                                bool set_handler)
 {
-    AioContext *ctx = qemu_get_aio_context();
     if (assign && set_handler) {
-        if (vq->use_aio) {
-            aio_set_event_notifier(ctx, &vq->host_notifier, true,
+        event_notifier_set_handler(&vq->host_notifier, true,
                                    virtio_queue_host_notifier_read);
-        } else {
-            event_notifier_set_handler(&vq->host_notifier, true,
-                                       virtio_queue_host_notifier_read);
-        }
     } else {
-        if (vq->use_aio) {
-            aio_set_event_notifier(ctx, &vq->host_notifier, true, NULL);
-        } else {
-            event_notifier_set_handler(&vq->host_notifier, true, NULL);
-        }
+        event_notifier_set_handler(&vq->host_notifier, true, NULL);
     }
     if (!assign) {
         /* Test and clear notifier before after disabling event,
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index ec50f7a..1db4fbf 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -145,9 +145,6 @@ typedef void (*VirtIOHandleOutput)(VirtIODevice *, VirtQueue *);
 VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size,
                             VirtIOHandleOutput handle_output);
 
-VirtQueue *virtio_add_queue_aio(VirtIODevice *vdev, int queue_size,
-                                VirtIOHandleOutput handle_output);
-
 void virtio_del_queue(VirtIODevice *vdev, int n);
 
 void *virtqueue_alloc_element(size_t sz, unsigned out_num, unsigned in_num);
-- 
2.7.4