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| author |   Felix Kuehling <Felix.Kuehling@amd.com> | 2021-05-05 15:18:53 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2021-05-21 17:59:59 -0400 |
| commit | b453e42a6e8b9fa4580011e923963248c56b9d4d (patch) | |
| tree | ec01dca5c5328631a937a3ff9d18ce02725e4b75 /include/uapi/drm/amdgpu_drm.h | |
| parent | drm/amd/display: Allow bandwidth validation for 0 streams. (diff) | |
| download | linux-dev-b453e42a6e8b9fa4580011e923963248c56b9d4d.tar.xz linux-dev-b453e42a6e8b9fa4580011e923963248c56b9d4d.zip | |
drm/amdgpu: Add new placement for preemptible SG BOs
SG BOs such as dmabuf imports and userptr BOs do not consume system
resources directly. Instead they point to resources owned elsewhere.
They typically get evicted by DMABuf move notifiers of MMU notifiers.
If those notifiers don't need to wait for hardware fences (i.e. the SG
BOs are used in a preemptible context), then we don't need to limit
them to the GTT size and we don't need TTM to evict them.
Create a new placement for such preemptible SG BOs that does not impose
artificial size limits and TTM evictions.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'include/uapi/drm/amdgpu_drm.h')
| -rw-r--r-- | include/uapi/drm/amdgpu_drm.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h index 2063a1c10f79..dc61537d7547 100644 --- a/include/uapi/drm/amdgpu_drm.h +++ b/include/uapi/drm/amdgpu_drm.h @@ -136,6 +136,10 @@ extern "C" { * accessing it with various hw blocks */ #define AMDGPU_GEM_CREATE_ENCRYPTED (1 << 10) +/* Flag that BO will be used only in preemptible context, which does + * not require GTT memory accounting + */ +#define AMDGPU_GEM_CREATE_PREEMPTIBLE (1 << 11) struct drm_amdgpu_gem_create_in { /** the requested memory size */ |