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drm/virtio: Use IDAs more efficiently

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0-based IDAs are more efficient than any other base.  Convert the
1-based IDAs to be 0-based.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20181030165352.13065-2-willy@infradead.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Matthew Wilcox
2018-10-30 09:53:52 -07:00
committed by Gerd Hoffmann
parent 556c62e85f
commit 2ae7f165c0
2 changed files with 6 additions and 5 deletions
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6
drivers/gpu/drm/virtio/virtgpu_object.c
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@@ -28,18 +28,18 @@
static int virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev,
uint32_t *resid)
{
int handle = ida_alloc_min(&vgdev->resource_ida, 1, GFP_KERNEL);
int handle = ida_alloc(&vgdev->resource_ida, GFP_KERNEL);
if (handle < 0)
return handle;
*resid = handle;
*resid = handle + 1;
return 0;
}
static void virtio_gpu_resource_id_put(struct virtio_gpu_device *vgdev, uint32_t id)
{
ida_free(&vgdev->resource_ida, id);
ida_free(&vgdev->resource_ida, id - 1);
}
static void virtio_gpu_ttm_bo_destroy(struct ttm_buffer_object *tbo)