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drm/amdgpu: set default num_kcq to 2 under sriov

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The number of kernel queues has impact on the latency under sriov
usecase. So to reduce the latency we set the default num_kcq = 2 under
sriov if not set manually.

Signed-off-by: YuBiao Wang <YuBiao.Wang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
YuBiao Wang
2023-05-05 14:35:32 +08:00
committed by Alex Deucher
parent 9d7a348d36
commit db5dcd476e
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
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@@ -68,6 +68,9 @@ void amdgpu_virt_init_setting(struct amdgpu_device *adev)
/* enable mcbp for sriov */
amdgpu_mcbp = 1;
/* Reduce kcq number to 2 to reduce latency */
if (amdgpu_num_kcq == -1)
amdgpu_num_kcq = 2;
}
void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,