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drm/amdkfd: Separate dma unmap and free of dma address array operations

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We do not need free dma address array of svm_range each time we do dma unmap
for pages in svm_range as we can reuse the same array. Only free it when free
svm_range. Separate these two operations and use them accordingly.

Signed-off-by: Xiaogang Chen <xiaogang.chen@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Xiaogang Chen
2023-09-15 17:02:23 -05:00
committed by Alex Deucher
parent 8ab7fab6b6
commit df954b695c
3 changed files with 21 additions and 12 deletions
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6
drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
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@@ -460,7 +460,7 @@ svm_migrate_vma_to_vram(struct kfd_node *node, struct svm_range *prange,
start >> PAGE_SHIFT, end >> PAGE_SHIFT,
0, node->id, trigger);
svm_range_dma_unmap(adev->dev, scratch, 0, npages);
svm_range_dma_unmap_dev(adev->dev, scratch, 0, npages);
out_free:
kvfree(buf);
@@ -544,7 +544,7 @@ svm_migrate_ram_to_vram(struct svm_range *prange, uint32_t best_loc,
if (cpages) {
prange->actual_loc = best_loc;
svm_range_free_dma_mappings(prange, true);
svm_range_dma_unmap(prange);
} else {
svm_range_vram_node_free(prange);
}
@@ -745,7 +745,7 @@ svm_migrate_vma_to_ram(struct kfd_node *node, struct svm_range *prange,
start >> PAGE_SHIFT, end >> PAGE_SHIFT,
node->id, 0, trigger);
svm_range_dma_unmap(adev->dev, scratch, 0, npages);
svm_range_dma_unmap_dev(adev->dev, scratch, 0, npages);
out_free:
kvfree(buf);