[0/6,V3] fdinfo shared stats

Message

Alex Deucher Jan. 30, 2024, 4:12 p.m. UTC

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(-)