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| author |   Felix Kuehling <Felix.Kuehling@amd.com> | 2016-07-15 18:37:05 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2017-07-14 11:06:36 -0400 |
| commit | a667386cb997a136e169de3cf70f007223bb74ee (patch) | |
| tree | 54dc2a27b23cf5889ea7e47e521430f0a3dc5251 /drivers/gpu/drm/amd/amdgpu/amdgpu.h | |
| parent | drm/amdgpu: Enable SDMA context switching for CIK (diff) | |
| download | linux-dev-a667386cb997a136e169de3cf70f007223bb74ee.tar.xz linux-dev-a667386cb997a136e169de3cf70f007223bb74ee.zip | |
drm/amdgpu: Make SDMA phase quantum configurable
Set a configurable SDMA phase quantum when enabling SDMA context
switching. The default value significantly reduces SDMA latency
in page table updates when user-mode SDMA queues have concurrent
activity, compared to the initial HW setting.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Andres Rodriguez <andres.rodriguez@amd.com>
Reviewed-by: Shaoyun Liu <shaoyun.liu@amd.com>
Acked-by: Chunming Zhou <david1.zhou@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index c290b262d7da..ebd077fdce1b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -107,6 +107,7 @@ extern unsigned amdgpu_pcie_gen_cap; extern unsigned amdgpu_pcie_lane_cap; extern unsigned amdgpu_cg_mask; extern unsigned amdgpu_pg_mask; +extern unsigned amdgpu_sdma_phase_quantum; extern char *amdgpu_disable_cu; extern char *amdgpu_virtual_display; extern unsigned amdgpu_pp_feature_mask; |