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drm/amdkfd: add invalid pages debug at vram migration

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This is for debug purposes only.
It conditionally generates partial migrations to test mixed
CPU/GPU memory domain pages in a prange easily.

Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Sierra 2021-05-12 11:02:33 -05:00 committed by Alex Deucher
parent 6ffecc946f
commit 3bf8282c6b
1 changed files with 14 additions and 0 deletions
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14
drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
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@ -353,6 +353,20 @@ svm_migrate_copy_to_vram(struct amdgpu_device *adev, struct svm_range *prange,
}
}
#ifdef DEBUG_FORCE_MIXED_DOMAINS
for (i = 0, j = 0; i < npages; i += 4, j++) {
if (j & 1)
continue;
svm_migrate_put_vram_page(adev, dst[i]);
migrate->dst[i] = 0;
svm_migrate_put_vram_page(adev, dst[i + 1]);
migrate->dst[i + 1] = 0;
svm_migrate_put_vram_page(adev, dst[i + 2]);
migrate->dst[i + 2] = 0;
svm_migrate_put_vram_page(adev, dst[i + 3]);
migrate->dst[i + 3] = 0;
}
#endif
out:
return r;
}