On Fri, Feb 1, 2019 at 11:12 AM Eric Anholt <eric@xxxxxxxxxx> wrote:
>
> Rob Herring <robh@xxxxxxxxxx> writes:
>
> > Now that the base struct drm_gem_object has a reservation_object, use it
> > and remove the private BO one.
> >
> > Cc: Eric Anholt <eric@xxxxxxxxxx>
> > Cc: Daniel Vetter <daniel@xxxxxxxx>
> > Cc: David Airlie <airlied@xxxxxxxx>
> > Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> > Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
>
> > @@ -453,8 +453,6 @@ v3d_wait_bo_ioctl(struct drm_device *dev, void *data,
> > {
> > int ret;
> > struct drm_v3d_wait_bo *args = data;
> > - struct drm_gem_object *gem_obj;
> > - struct v3d_bo *bo;
> > ktime_t start = ktime_get();
> > u64 delta_ns;
> > unsigned long timeout_jiffies =
> > @@ -463,21 +461,8 @@ v3d_wait_bo_ioctl(struct drm_device *dev, void *data,
> > if (args->pad != 0)
> > return -EINVAL;
> >
> > - gem_obj = drm_gem_object_lookup(file_priv, args->handle);
> > - if (!gem_obj) {
> > - DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
> > - return -EINVAL;
> > - }
> > - bo = to_v3d_bo(gem_obj);
> > -
> > - ret = reservation_object_wait_timeout_rcu(bo->resv,
> > - true, true,
> > - timeout_jiffies);
> > -
> > - if (ret == 0)
> > - ret = -ETIME;
> > - else if (ret > 0)
> > - ret = 0;
> > + ret = drm_gem_reservation_object_wait(file_priv, args->handle,
> > + true, timeout_jiffies);
>
> Looks like you lost my ret handling in the change.
Indeed as initially I had moved that internal.
> Honestly, I'd love to see drm_gem_reservation_object_wait return
> sensible values like this (0 for success, -ETIME for timeouts) instead
> of drivers having to stubmle over this API.
Me too, but then I found some drivers use ETIMEDOUT instead. I didn't
really want to have to fixup one value to the other and gave up. They
also pass an absolute timeout instead.
Rob
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