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@xxxxxxxxx>
---
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)
};
--
2.23.0.rc1
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