diff options
| author | Tvrtko Ursulin <tvrtko.ursulin@igalia.com> | 2025-10-20 12:54:11 +0100 |
|---|---|---|
| committer | Tvrtko Ursulin <tursulin@ursulin.net> | 2025-10-31 09:27:28 +0000 |
| commit | 402b3a865090578f9245115e17ee230e01daf60e (patch) | |
| tree | 4f76b2b6355cdac416061df820ddc5b07fa7a092 /include/drm | |
| parent | ccbadd9eea62aac0278d22a61a15a1d8f4df9a16 (diff) | |
drm/ttm: Add an allocation flag to propagate -ENOSPC on OOM
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.
Co-developed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net>
Link: https://lore.kernel.org/r/20251020115411.36818-7-tvrtko.ursulin@igalia.com
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/ttm/ttm_allocation.h | 1 | ||||
| -rw-r--r-- | include/drm/ttm/ttm_device.h | 5 |
2 files changed, 6 insertions, 0 deletions
diff --git a/include/drm/ttm/ttm_allocation.h b/include/drm/ttm/ttm_allocation.h index 8f8544760306..655d1e44aba7 100644 --- a/include/drm/ttm/ttm_allocation.h +++ b/include/drm/ttm/ttm_allocation.h @@ -7,5 +7,6 @@ #define TTM_ALLOCATION_POOL_BENEFICIAL_ORDER(n) ((n) & 0xff) /* Max order which caller can benefit from */ #define TTM_ALLOCATION_POOL_USE_DMA_ALLOC BIT(8) /* Use coherent DMA allocations. */ #define TTM_ALLOCATION_POOL_USE_DMA32 BIT(9) /* Use GFP_DMA32 allocations. */ +#define TTM_ALLOCATION_PROPAGATE_ENOSPC BIT(10) /* Do not convert ENOSPC from resource managers to ENOMEM. */ #endif diff --git a/include/drm/ttm/ttm_device.h b/include/drm/ttm/ttm_device.h index 074b98572275..d016360e5ceb 100644 --- a/include/drm/ttm/ttm_device.h +++ b/include/drm/ttm/ttm_device.h @@ -221,6 +221,11 @@ struct ttm_device { struct list_head device_list; /** + * @alloc_flags: TTM_ALLOCATION_ flags. + */ + unsigned int alloc_flags; + + /** * @funcs: Function table for the device. * Constant after bo device init */ |