diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2018-10-19 08:18:47 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2018-10-29 22:50:55 +0100 |
| commit | 6c1cd97bdaffa2ae1dbdc8a0857931308ac647cd (patch) | |
| tree | 5a23cc28ebea931ff5d800dcff7a9268e3bb0fbe /drivers/gpu/drm/virtio/virtgpu_object.c | |
| parent | 724cfdfd667a28dbfb5365b76df4ccf39cf9a09a (diff) | |
drm/virtio: fix resource id handling
Move virtio_gpu_resource_id_{get,put} to virtgpu_object.c and make them
static. Allocate and free the id on creation and destroy, drop all
other calls. That way objects have a valid handle for the whole
lifetime of the object.
Also fixes ids leaking. Worst offender are dumb buffers, and I think
some error paths too.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20181019061847.18958-7-kraxel@redhat.com
Diffstat (limited to 'drivers/gpu/drm/virtio/virtgpu_object.c')
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_object.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c index 6611c487d798..8bd1ebe13b62 100644 --- a/drivers/gpu/drm/virtio/virtgpu_object.c +++ b/drivers/gpu/drm/virtio/virtgpu_object.c @@ -25,6 +25,26 @@ #include "virtgpu_drv.h" +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(); + *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); +} + static void virtio_gpu_ttm_bo_destroy(struct ttm_buffer_object *tbo) { struct virtio_gpu_object *bo; @@ -40,6 +60,7 @@ static void virtio_gpu_ttm_bo_destroy(struct ttm_buffer_object *tbo) if (bo->vmap) virtio_gpu_object_kunmap(bo); drm_gem_object_release(&bo->gem_base); + virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle); kfree(bo); } @@ -81,9 +102,11 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, bo = kzalloc(sizeof(struct virtio_gpu_object), GFP_KERNEL); if (bo == NULL) return -ENOMEM; + virtio_gpu_resource_id_get(vgdev, &bo->hw_res_handle); size = roundup(size, PAGE_SIZE); ret = drm_gem_object_init(vgdev->ddev, &bo->gem_base, size); if (ret != 0) { + virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle); kfree(bo); return ret; } |