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drm/amdgpu: drop ttm two ended allocation

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amdgpu_bo_create() calls amdgpu_ttm_placement_from_domain()
before ttm_bo_init() is called.  amdgpu_ttm_placement_from_domain()
uses the ttm bo size to determine when to select top down
allocation but since the ttm bo is not initialized yet the
check is always false.  It only took affect when buffers
were validated later.  It also seemed to regress suspend
and resume on some systems possibly due to it not
taking affect in amdgpu_bo_create().

amdgpu_bo_create() and amdgpu_ttm_placement_from_domain()
need to be reworked substantially for this to be optimally
effective.  Re-enable it at that point.

Ported from radeon commit:
a239118a24b3bf9089751068e431dfb63dc4168b

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Alex Deucher 2015-04-22 14:00:49 -04:00
parent 1256a8b89e
commit 2d8bd23a05
1 changed files with 0 additions and 6 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
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@ -189,12 +189,6 @@ void amdgpu_ttm_placement_from_domain(struct amdgpu_bo *rbo, u32 domain)
else
rbo->placements[i].lpfn = 0;
}
if (rbo->tbo.mem.size > 512 * 1024) {
for (i = 0; i < c; i++) {
rbo->placements[i].flags |= TTM_PL_FLAG_TOPDOWN;
}
}
}
int amdgpu_bo_create(struct amdgpu_device *adev,