Message ID | 20190618135821.8644-3-kraxel@redhat.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | drm/virtio: switch from ttm to gem shmem helpers. | expand |
On Tue, Jun 18, 2019 at 03:58:10PM +0200, Gerd Hoffmann wrote: > Use drm_gem_reservation_object_wait() in virtio_gpu_wait_ioctl(). > This also makes the ioctl run lockless. > > Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> > Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Nit: Missing the v2 changelog here. -Daniel > --- > drivers/gpu/drm/virtio/virtgpu_ioctl.c | 24 ++++++++++-------------- > 1 file changed, 10 insertions(+), 14 deletions(-) > > diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c > index ac60be9b5c19..313c770ea2c5 100644 > --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c > +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c > @@ -464,23 +464,19 @@ static int virtio_gpu_wait_ioctl(struct drm_device *dev, void *data, > 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) > - return -ENOENT; > + if (args->flags & VIRTGPU_WAIT_NOWAIT) { > + obj = drm_gem_object_lookup(file, args->handle); > + ret = reservation_object_test_signaled_rcu(obj->resv, true); > + drm_gem_object_put_unlocked(obj); > + return ret ? 0 : -EBUSY; > + } > > - qobj = gem_to_virtio_gpu_obj(gobj); > - > - if (args->flags & VIRTGPU_WAIT_NOWAIT) > - nowait = true; > - ret = virtio_gpu_object_wait(qobj, nowait); > - > - drm_gem_object_put_unlocked(gobj); > - return ret; > + return drm_gem_reservation_object_wait(file, args->handle, > + true, timeout); > } > > static int virtio_gpu_get_caps_ioctl(struct drm_device *dev, > -- > 2.18.1 >
diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c index ac60be9b5c19..313c770ea2c5 100644 --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c @@ -464,23 +464,19 @@ static int virtio_gpu_wait_ioctl(struct drm_device *dev, void *data, 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) - return -ENOENT; + if (args->flags & VIRTGPU_WAIT_NOWAIT) { + obj = drm_gem_object_lookup(file, args->handle); + ret = reservation_object_test_signaled_rcu(obj->resv, true); + drm_gem_object_put_unlocked(obj); + return ret ? 0 : -EBUSY; + } - qobj = gem_to_virtio_gpu_obj(gobj); - - if (args->flags & VIRTGPU_WAIT_NOWAIT) - nowait = true; - ret = virtio_gpu_object_wait(qobj, nowait); - - drm_gem_object_put_unlocked(gobj); - return ret; + return drm_gem_reservation_object_wait(file, args->handle, + true, timeout); } static int virtio_gpu_get_caps_ioctl(struct drm_device *dev,