drm_vma_offset_add — Add offset node to manager
int drm_vma_offset_add ( | struct drm_vma_offset_manager * mgr, |
| struct drm_vma_offset_node * node, | |
unsigned long pages); |
mgrManager object
nodeNode to be added
pagesAllocation size visible to user-space (in number of pages)
Add a node to the offset-manager. If the node was already added, this does
nothing and return 0. pages is the size of the object given in number of
pages.
After this call succeeds, you can access the offset of the node until it
is removed again.
If this call fails, it is safe to retry the operation or call
drm_vma_offset_remove, anyway. However, no cleanup is required in that
case.
pages is not required to be the same size as the underlying memory object
that you want to map. It only limits the size that user-space can map into
their address space.