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drm/amdgpu: make an improvement on amdgpu_hmm_range_get_pages 

Only schedule when hmm_range_fault returns error.

Signed-off-by: James Zhu <James.Zhu@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
James Zhu 2023-12-08 17:49:54 -05:00 committed by Alex Deucher
parent 78b4dfd359
commit 0c8c0e7a9e
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c
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@ -199,6 +199,7 @@ retry:
hmm_range->notifier_seq = mmu_interval_read_begin(notifier);
r = hmm_range_fault(hmm_range);
if (unlikely(r)) {
schedule();
/*
* FIXME: This timeout should encompass the retry from
* mmu_interval_read_retry() as well.
@ -212,7 +213,6 @@ retry:
break;
hmm_range->hmm_pfns += MAX_WALK_BYTE >> PAGE_SHIFT;
hmm_range->start = hmm_range->end;
schedule();
} while (hmm_range->end < end);
hmm_range->start = start;