Am 2023-06-06 um 18:53 schrieb Philip Yang:
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.y...@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehl...@amd.com>
--- drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c index 2dadcfe43d03..081267161d40 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c @@ -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);
