We had a request to add shared buffer stats to fdinfo for amdgpu and while implementing that, Christian mentioned that just looking at the GEM handle count doesn't take into account buffers shared with other subsystems like V4L or RDMA. Those subsystems don't use GEM, so it doesn't really matter from a GPU top perspective, but it's more correct if you actually want to see shared buffers. After further discussions, add a helper and update all fdinfo implementations to use that helper for consistency. Alex Deucher (6): Documentation/gpu: Update documentation on drm-shared-* drm: add drm_gem_object_is_shared_for_memory_stats() helper drm: update drm_show_memory_stats() for dma-bufs drm/amdgpu: add shared fdinfo stats drm/i915: Update shared stats to use the new gem helper drm/xe: Update shared stats to use the new gem helper Documentation/gpu/drm-usage-stats.rst | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_fdinfo.c | 4 ++++ drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 11 +++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 6 ++++++ drivers/gpu/drm/drm_file.c | 2 +- drivers/gpu/drm/drm_gem.c | 16 ++++++++++++++++ drivers/gpu/drm/i915/i915_drm_client.c | 2 +- drivers/gpu/drm/xe/xe_drm_client.c | 2 +- include/drm/drm_gem.h | 1 + 9 files changed, 42 insertions(+), 4 deletions(-) -- 2.42.0
