diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2019-08-29 12:32:45 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-09-04 06:54:08 +0200 |
| commit | 29cf12394c0565d7eb1685bf0c1b4749aa6a8b66 (patch) | |
| tree | fd02d3d853edea918edeaddea0b94f48cc2d6815 | |
| parent | 889165ad6190556ffe4a8fa6b0e486f1c25589d8 (diff) | |
drm/virtio: switch virtio_gpu_wait_ioctl() to gem helper.
Use drm_gem_reservation_object_wait() in virtio_gpu_wait_ioctl().
This also makes the ioctl run lockless.
v9: fix return value.
v5: handle lookup failure.
v2: use reservation_object_test_signaled_rcu for VIRTGPU_WAIT_NOWAIT.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20190829103301.3539-3-kraxel@redhat.com
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_ioctl.c | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c index 0a88ef11b9d3..a662394f6892 100644 --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c @@ -463,25 +463,29 @@ out: } static int virtio_gpu_wait_ioctl(struct drm_device *dev, void *data, - struct drm_file *file) + struct drm_file *file) { struct drm_virtgpu_3d_wait *args = data; - struct drm_gem_object *gobj = NULL; - struct virtio_gpu_object *qobj = NULL; + struct drm_gem_object *obj; + long timeout = 15 * HZ; int ret; - bool nowait = false; - gobj = drm_gem_object_lookup(file, args->handle); - if (gobj == NULL) + obj = drm_gem_object_lookup(file, args->handle); + if (obj == NULL) return -ENOENT; - qobj = gem_to_virtio_gpu_obj(gobj); - - if (args->flags & VIRTGPU_WAIT_NOWAIT) - nowait = true; - ret = virtio_gpu_object_wait(qobj, nowait); + if (args->flags & VIRTGPU_WAIT_NOWAIT) { + ret = dma_resv_test_signaled_rcu(obj->resv, true); + } else { + ret = dma_resv_wait_timeout_rcu(obj->resv, true, true, + timeout); + } + if (ret == 0) + ret = -EBUSY; + else if (ret > 0) + ret = 0; - drm_gem_object_put_unlocked(gobj); + drm_gem_object_put_unlocked(obj); return ret; } |