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| 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_cs.c | |
| parent | ddc21af4d0f37f42b33c54cb69b215997fe5b082 (diff) | |
| download | op-kernel-dev-a5ccfe5c20740f2fbf00291490cdf8d2373ec255.zip op-kernel-dev-a5ccfe5c20740f2fbf00291490cdf8d2373ec255.tar.gz | |
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_cs.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c index 9881a1e..5a2a5ba 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c @@ -262,7 +262,7 @@ static void amdgpu_cs_get_threshold_for_moves(struct amdgpu_device *adev, return; } - total_vram = adev->gmc.real_vram_size - adev->vram_pin_size; + total_vram = adev->gmc.real_vram_size - atomic64_read(&adev->vram_pin_size); used_vram = amdgpu_vram_mgr_usage(&adev->mman.bdev.man[TTM_PL_VRAM]); free_vram = used_vram >= total_vram ? 0 : total_vram - used_vram; |
