[v2,0/2] drm/ttm: Add an option to report graphics memory OOM

Message

Thomas Hellström Oct. 2, 2024, 12:24 p.m. UTC

Some graphics APIs differentiate between out-of-graphics-memory and
out-of-host-memory (system memory). Add a device init flag to
have -ENOSPC propagated from the resource managers instead of being
converted to -ENOMEM, to aid driver stacks in determining what
error code to return or whether corrective action can be taken at
the driver level.

The first patch deals with a ttm_device_init() interface change,
The Second patch adds the actual functionality.

A follow-up will be posted for Xe once this is merged / backmerged.

Thomas Hellström (2):
  drm/ttm: Change ttm_device_init to use a struct instead of multiple
    bools
  drm/ttm: Add a device flag to propagate -ENOSPC on OOM

 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c       |  6 +++--
 drivers/gpu/drm/drm_gem_vram_helper.c         |  7 +++---
 drivers/gpu/drm/i915/intel_region_ttm.c       |  3 ++-
 drivers/gpu/drm/loongson/lsdc_ttm.c           |  5 +++-
 drivers/gpu/drm/nouveau/nouveau_ttm.c         |  7 ++++--
 drivers/gpu/drm/qxl/qxl_ttm.c                 |  2 +-
 drivers/gpu/drm/radeon/radeon_ttm.c           |  6 +++--
 drivers/gpu/drm/ttm/tests/ttm_bo_test.c       | 16 ++++++------
 .../gpu/drm/ttm/tests/ttm_bo_validate_test.c  |  3 ++-
 drivers/gpu/drm/ttm/tests/ttm_device_test.c   | 16 ++++++------
 drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c | 20 ++++++---------
 drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.h |  6 ++---
 drivers/gpu/drm/ttm/ttm_bo.c                  |  2 +-
 drivers/gpu/drm/ttm/ttm_device.c              |  8 +++---
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.c           |  4 +--
 drivers/gpu/drm/xe/xe_device.c                |  3 ++-
 include/drm/ttm/ttm_device.h                  | 25 ++++++++++++++++++-
 17 files changed, 86 insertions(+), 53 deletions(-)