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drm/amdgpu: Increase hmm range get pages timeout

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If hmm_range_fault returns -EBUSY, we should call hmm_range_fault again
to validate the remaining pages. On one system with NUMA auto balancing
enabled, hmm_range_fault takes 6 seconds for 1GB range because CPU
migrate the range one page at a time. To be safe, increase timeout value
to 1 second for 128MB range.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Philip Yang 2023-06-06 15:46:33 -04:00 committed by Alex Deucher
parent d728eda3c5
commit 5d1c70bb6e
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c
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@ -190,8 +190,8 @@ int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier,
pr_debug("hmm range: start = 0x%lx, end = 0x%lx",
hmm_range->start, hmm_range->end);
/* Assuming 512MB takes maxmium 1 second to fault page address */
timeout = max((hmm_range->end - hmm_range->start) >> 29, 1UL);
/* Assuming 128MB takes maximum 1 second to fault page address */
timeout = max((hmm_range->end - hmm_range->start) >> 27, 1UL);
timeout *= HMM_RANGE_DEFAULT_TIMEOUT;
timeout = jiffies + msecs_to_jiffies(timeout);