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drm/ttm: set page mapping during allocation

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To aid debugging set the page mapping during allocation instead of
during VM faults.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2018-02-01 14:52:50 +01:00 committed by Alex Deucher
parent 9aff8b2ae7
commit ec92937056
2 changed files with 17 additions and 2 deletions
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1
drivers/gpu/drm/ttm/ttm_bo_vm.c
View File

@ -257,7 +257,6 @@ static int ttm_bo_vm_fault(struct vm_fault *vmf)
} else if (unlikely(!page)) {
break;
}
page->mapping = vma->vm_file->f_mapping;
page->index = drm_vma_node_start(&bo->vma_node) +
page_offset;
pfn = page_to_pfn(page);

18
drivers/gpu/drm/ttm/ttm_tt.c
View File

@ -392,12 +392,28 @@ int ttm_tt_swapout(struct ttm_tt *ttm, struct file *persistent_swap_storage)
return ret;
}
static void ttm_tt_add_mapping(struct ttm_tt *ttm)
{
pgoff_t i;
if (ttm->page_flags & TTM_PAGE_FLAG_SG)
return;
for (i = 0; i < ttm->num_pages; ++i)
ttm->pages[i]->mapping = ttm->bdev->dev_mapping;
}
int ttm_tt_populate(struct ttm_tt *ttm, struct ttm_operation_ctx *ctx)
{
int ret;
if (ttm->state != tt_unpopulated)
return 0;
return ttm->bdev->driver->ttm_tt_populate(ttm, ctx);
ret = ttm->bdev->driver->ttm_tt_populate(ttm, ctx);
if (!ret)
ttm_tt_add_mapping(ttm);
return ret;
}
static void ttm_tt_clear_mapping(struct ttm_tt *ttm)