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drm/amdgpu: use multipipe compute policy on non PL11 asics

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A performance regression for OpenCL tests on Polaris11 had this feature
disabled for all asics.

Instead, disable it selectively on the affected asics.

Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Andres Rodriguez <andresx7@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andres Rodriguez 2017-09-26 12:22:45 -04:00 committed by Alex Deucher
parent e23b74aab5
commit 0f7607d484
1 changed files with 12 additions and 2 deletions
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14
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
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@ -109,9 +109,20 @@ void amdgpu_gfx_parse_disable_cu(unsigned *mask, unsigned max_se, unsigned max_s
}
}
static bool amdgpu_gfx_is_multipipe_capable(struct amdgpu_device *adev)
{
/* FIXME: spreading the queues across pipes causes perf regressions
* on POLARIS11 compute workloads */
if (adev->asic_type == CHIP_POLARIS11)
return false;
return adev->gfx.mec.num_mec > 1;
}
void amdgpu_gfx_compute_queue_acquire(struct amdgpu_device *adev)
{
int i, queue, pipe, mec;
bool multipipe_policy = amdgpu_gfx_is_multipipe_capable(adev);
/* policy for amdgpu compute queue ownership */
for (i = 0; i < AMDGPU_MAX_COMPUTE_QUEUES; ++i) {
@ -125,8 +136,7 @@ void amdgpu_gfx_compute_queue_acquire(struct amdgpu_device *adev)
if (mec >= adev->gfx.mec.num_mec)
break;
/* FIXME: spreading the queues across pipes causes perf regressions */
if (0) {
if (multipipe_policy) {
/* policy: amdgpu owns the first two queues of the first MEC */
if (mec == 0 && queue < 2)
set_bit(i, adev->gfx.mec.queue_bitmap);