On Fri, Mar 17, 2017 at 2:38 PM, Philipp Zabel <p.za...@pengutronix.de> wrote:
> Use the dma_fence_match_context helper to check if all backing fences
> are from our own context, in which case we don't have to wait.
>
> Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
> Cc: Rob Clark <robdcl...@gmail.com>
> Cc: Gustavo Padovan <gustavo.pado...@collabora.com>
> ---
> Not sure if this can be handled exactly the same as for etnaviv. This depends
> on
> d5b72a2123df ("dma-fence: add dma_fence_match_context helper").
Thanks, the helper is a nice improvement. I'll pull this in when the
dma-fence patch lands (seems not to be in drm-next yet).. and also
maybe shorten up the subject line a bit ;-)
BR,
-R
> ---
> drivers/gpu/drm/msm/msm_gem_submit.c | 10 ++++------
> 1 file changed, 4 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c
> b/drivers/gpu/drm/msm/msm_gem_submit.c
> index 1172fe7a9252c..507a6f5b911f0 100644
> --- a/drivers/gpu/drm/msm/msm_gem_submit.c
> +++ b/drivers/gpu/drm/msm/msm_gem_submit.c
> @@ -439,17 +439,15 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void
> *data,
> goto out;
> }
>
> - /* TODO if we get an array-fence due to userspace merging
> multiple
> - * fences, we need a way to determine if all the backing
> fences
> - * are from our own context..
> + /*
> + * Wait if the fence is from a foreign context, or if the
> fence
> + * array contains any fence from a foreign context.
> */
> -
> - if (in_fence->context != gpu->fctx->context) {
> + if (!dma_fence_match_context(in_fence, gpu->fctx->context)) {
> ret = dma_fence_wait(in_fence, true);
> if (ret)
> goto out;
> }
> -
> }
>
> if (!(args->fence & MSM_SUBMIT_NO_IMPLICIT)) {
> --
> 2.11.0
>
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