diff options
| author | Michel Dänzer <michel.daenzer@amd.com> | 2018-07-11 12:00:40 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-07-13 14:46:21 -0500 |
| commit | a5ccfe5c20740f2fbf00291490cdf8d2373ec255 (patch) | |
| tree | 66b6a41a586ebba1e8c04a71dfbe3058c42b9581 /drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | |
| parent | ddc21af4d0f37f42b33c54cb69b215997fe5b082 (diff) | |
| download | linux-a5ccfe5c20740f2fbf00291490cdf8d2373ec255.tar.bz2 | |
drm/amdgpu: Make pin_size values atomic
Concurrent execution of the non-atomic arithmetic could result in
completely bogus values.
v2:
* Rebased on v2 of the previous patch
Cc: stable@vger.kernel.org
Bugzilla: https://bugs.freedesktop.org/106872
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index f0239feceab4..1fd83ed175fa 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -916,10 +916,11 @@ int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain, domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type); if (domain == AMDGPU_GEM_DOMAIN_VRAM) { - adev->vram_pin_size += amdgpu_bo_size(bo); - adev->visible_pin_size += amdgpu_vram_mgr_bo_visible_size(bo); + atomic64_add(amdgpu_bo_size(bo), &adev->vram_pin_size); + atomic64_add(amdgpu_vram_mgr_bo_visible_size(bo), + &adev->visible_pin_size); } else if (domain == AMDGPU_GEM_DOMAIN_GTT) { - adev->gart_pin_size += amdgpu_bo_size(bo); + atomic64_add(amdgpu_bo_size(bo), &adev->gart_pin_size); } error: @@ -968,10 +969,11 @@ int amdgpu_bo_unpin(struct amdgpu_bo *bo) return 0; if (bo->tbo.mem.mem_type == TTM_PL_VRAM) { - adev->vram_pin_size -= amdgpu_bo_size(bo); - adev->visible_pin_size -= amdgpu_vram_mgr_bo_visible_size(bo); + atomic64_sub(amdgpu_bo_size(bo), &adev->vram_pin_size); + atomic64_sub(amdgpu_vram_mgr_bo_visible_size(bo), + &adev->visible_pin_size); } else if (bo->tbo.mem.mem_type == TTM_PL_TT) { - adev->gart_pin_size -= amdgpu_bo_size(bo); + atomic64_sub(amdgpu_bo_size(bo), &adev->gart_pin_size); } for (i = 0; i < bo->placement.num_placement; i++) { |