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drm/amdgpu: Optimize a function called by every IB sheduling

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Move several if statements and a loop statment from
  run time to initialization time.

Signed-off-by: Alex Xie <AlexBin.Xie@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Xie
2017-05-30 17:10:16 -04:00
committed by Alex Deucher
parent 1410f64651
commit dd684d313e
3 changed files with 40 additions and 27 deletions
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28
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@@ -656,32 +656,6 @@ unlock:
return r;
}
static bool amdgpu_vm_ring_has_compute_vm_bug(struct amdgpu_ring *ring)
{
struct amdgpu_device *adev = ring->adev;
const struct amdgpu_ip_block *ip_block;
if (ring->funcs->type != AMDGPU_RING_TYPE_COMPUTE)
/* only compute rings */
return false;
ip_block = amdgpu_get_ip_block(adev, AMD_IP_BLOCK_TYPE_GFX);
if (!ip_block)
return false;
if (ip_block->version->major <= 7) {
/* gfx7 has no workaround */
return true;
} else if (ip_block->version->major == 8) {
if (adev->gfx.mec_fw_version >= 673)
/* gfx8 is fixed in MEC firmware 673 */
return false;
else
return true;
}
return false;
}
bool amdgpu_vm_need_pipeline_sync(struct amdgpu_ring *ring,
struct amdgpu_job *job)
{
@@ -691,7 +665,7 @@ bool amdgpu_vm_need_pipeline_sync(struct amdgpu_ring *ring,
struct amdgpu_vm_id *id;
bool gds_switch_needed;
bool vm_flush_needed = job->vm_needs_flush ||
amdgpu_vm_ring_has_compute_vm_bug(ring);
amdgpu_ring_has_compute_vm_bug(ring);
if (job->vm_id == 0)
return false;