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drm/amdgpu/gfx: keep all compute queues on the same pipe

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Spreading them causes performance regressions using compute
queues on Polaris 11.

Cc: Jim Qu <jim.qu@amd.com>
Acked-by: Jim Qu <Jim.Qu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2017-07-11 11:11:41 -04:00
parent 5cb818b861
commit fd97137541
1 changed files with 2 additions and 1 deletions
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drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+2 -1
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@@ -125,7 +125,8 @@ void amdgpu_gfx_compute_queue_acquire(struct amdgpu_device *adev)
if (mec >= adev->gfx.mec.num_mec) if (mec >= adev->gfx.mec.num_mec)
break; break;
if (adev->gfx.mec.num_mec > 1) { /* FIXME: spreading the queues across pipes causes perf regressions */
if (0) {
/* policy: amdgpu owns the first two queues of the first MEC */ /* policy: amdgpu owns the first two queues of the first MEC */
if (mec == 0 && queue < 2) if (mec == 0 && queue < 2)
set_bit(i, adev->gfx.mec.queue_bitmap); set_bit(i, adev->gfx.mec.queue_bitmap);