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drm/amdkfd: update SIMD distribution algo for GFXIP 9.4.2 onwards

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In certain cooperative group dispatch scenarios the default SPI resource
allocation may cause reduced per-CU workgroup occupancy. Set
COMPUTE_RESOURCE_LIMITS.FORCE_SIMD_DIST=1 to mitigate soft hang
scenarions.

Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Suggested-by: Joseph Greathouse <Joseph.Greathouse@amd.com>
Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rajneesh Bhardwaj
2024-01-31 19:33:49 -05:00
committed by Alex Deucher
parent 749f1ad0c3
commit 5869b32bbe
3 changed files with 13 additions and 1 deletions
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9
drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
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@@ -303,6 +303,15 @@ static void update_mqd(struct mqd_manager *mm, void *mqd,
update_cu_mask(mm, mqd, minfo, 0);
set_priority(m, q);
if (minfo && KFD_GC_VERSION(mm->dev) >= IP_VERSION(9, 4, 2)) {
if (minfo->update_flag & UPDATE_FLAG_IS_GWS)
m->compute_resource_limits |=
COMPUTE_RESOURCE_LIMITS__FORCE_SIMD_DIST_MASK;
else
m->compute_resource_limits &=
~COMPUTE_RESOURCE_LIMITS__FORCE_SIMD_DIST_MASK;
}
q->is_active = QUEUE_IS_ACTIVE(*q);
}