This feature was talked about by David. It allows userspace to query the last submitted point on a timeline.
Following the previous commit it made sense to add it.
Signed-off-by: Lionel Landwerlin lionel.g.landwerlin@intel.com --- drivers/gpu/drm/drm_syncobj.c | 15 ++++++++++++++- include/uapi/drm/drm.h | 1 + 2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c index c437fb6aaf7c..ad2f5672d707 100644 --- a/drivers/gpu/drm/drm_syncobj.c +++ b/drivers/gpu/drm/drm_syncobj.c @@ -1291,7 +1291,8 @@ int drm_syncobj_query_ioctl(struct drm_device *dev, void *data, return -EOPNOTSUPP;
if (args->selector != DRM_SYNCOBJ_TIMELINE_ARRAY_SELECTOR_SIGNALED_POINT && - args->selector != DRM_SYNCOBJ_TIMELINE_ARRAY_SELECTOR_SIDEBAND_PAYLOAD) + args->selector != DRM_SYNCOBJ_TIMELINE_ARRAY_SELECTOR_SIDEBAND_PAYLOAD && + args->selector != DRM_SYNCOBJ_TIMELINE_ARRAY_SELECTOR_SUBMIT_POINT) return -EINVAL;
if (args->count_handles == 0) @@ -1346,6 +1347,18 @@ int drm_syncobj_query_ioctl(struct drm_device *dev, void *data, if (ret) goto error; break; + + case DRM_SYNCOBJ_TIMELINE_ARRAY_SELECTOR_SUBMIT_POINT: + fence = drm_syncobj_fence_get(syncobjs[i]); + chain = to_dma_fence_chain(fence); + point = chain ? chain->base.seqno : 0; + dma_fence_put(fence); + + ret = copy_to_user(&points[i], &point, sizeof(uint64_t)); + ret = ret ? -EFAULT : 0; + if (ret) + goto error; + break; } }
diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h index dea759a36d37..3b8cdb3ffa94 100644 --- a/include/uapi/drm/drm.h +++ b/include/uapi/drm/drm.h @@ -785,6 +785,7 @@ struct drm_syncobj_timeline_array { __u32 selector; #define DRM_SYNCOBJ_TIMELINE_ARRAY_SELECTOR_SIGNALED_POINT (0) #define DRM_SYNCOBJ_TIMELINE_ARRAY_SELECTOR_SIDEBAND_PAYLOAD (1) +#define DRM_SYNCOBJ_TIMELINE_ARRAY_SELECTOR_SUBMIT_POINT (2) };