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drm/virtio: Replace IDRs with IDAs

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These IDRs were only being used to allocate unique numbers, not to look
up pointers, so they can use the more space-efficient IDA instead.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20180926160031.15721-2-willy@infradead.org

[ kraxel: resolve conflict ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Matthew Wilcox
2018-09-26 09:00:28 -07:00
committed by Gerd Hoffmann
parent 6c1cd97bda
commit 1938d1ae32
3 changed files with 8 additions and 28 deletions
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12
drivers/gpu/drm/virtio/virtgpu_object.c
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@@ -28,21 +28,13 @@
static void virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev,
uint32_t *resid)
{
int handle;
idr_preload(GFP_KERNEL);
spin_lock(&vgdev->resource_idr_lock);
handle = idr_alloc(&vgdev->resource_idr, NULL, 1, 0, GFP_NOWAIT);
spin_unlock(&vgdev->resource_idr_lock);
idr_preload_end();
int handle = ida_alloc_min(&vgdev->resource_ida, 1, GFP_KERNEL);
*resid = handle;
}
static void virtio_gpu_resource_id_put(struct virtio_gpu_device *vgdev, uint32_t id)
{
spin_lock(&vgdev->resource_idr_lock);
idr_remove(&vgdev->resource_idr, id);
spin_unlock(&vgdev->resource_idr_lock);
ida_free(&vgdev->resource_ida, id);
}
static void virtio_gpu_ttm_bo_destroy(struct ttm_buffer_object *tbo)