diff options
| author | Christian König <christian.koenig@amd.com> | 2017-08-25 09:14:43 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-08-31 13:46:35 -0400 |
| commit | e1eb899b45781b9bb77e6d7772d6e67bb0bc1a18 (patch) | |
| tree | a9ae3cb189187feffa80d868d5caa31bb2a78795 /drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c | |
| parent | 73fb16e7ebee12953de32a7a2552e0cf2bf74ebf (diff) | |
drm/amdgpu: add IOCTL interface for per VM BOs v3
Add the IOCTL interface so that applications can allocate per VM BOs.
Still WIP since not all corner cases are tested yet, but this reduces average
CS overhead for 10K BOs from 21ms down to 48us.
v2: add some extra checks, remove the WIP tag
v3: rename new flag to AMDGPU_GEM_CREATE_VM_ALWAYS_VALID
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c index 5b3f92891f89..7e0826469b5e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c @@ -136,7 +136,8 @@ struct dma_buf *amdgpu_gem_prime_export(struct drm_device *dev, { struct amdgpu_bo *bo = gem_to_amdgpu_bo(gobj); - if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm)) + if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm) || + bo->flags & AMDGPU_GEM_CREATE_VM_ALWAYS_VALID) return ERR_PTR(-EPERM); return drm_gem_prime_export(dev, gobj, flags); |