Hi Christian ,
I just wonder when encounter ENOMEM error during pin amdgpu BOs can we retry
validate again as below.
With the following simply patch the Abaqus pinned issue not observed.
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 11cbf63..72a32f5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -902,11 +902,15 @@ int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32
domain,
bo->placements[i].lpfn = lpfn;
bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
}
-
+retry:
r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
if (unlikely(r)) {
- dev_err(adev->dev, "%p pin failed\n", bo);
- goto error;
+ if (r == -ENOMEM){
+ goto retry;
+ } else {
+ dev_err(adev->dev, "%p pin failed\n", bo);
+ goto error;
+ }
}
bo->pin_count = 1;
Thanks,
Prike
From: Marek Olšák <[email protected]>
Sent: Wednesday, May 15, 2019 3:33 AM
To: Christian König <[email protected]>
Cc: Zhou, David(ChunMing) <[email protected]>; Liang, Prike
<[email protected]>; dri-devel <[email protected]>; amd-gfx
mailing list <[email protected]>
Subject: Re: [PATCH 11/11] drm/amdgpu: stop removing BOs from the LRU during CS
[CAUTION: External Email]
This series fixes the OOM errors. However, if I torture the kernel driver more,
I can get it to deadlock and end up with unkillable processes. I can also get
an OOM error. I just ran the test 5 times:
AMD_DEBUG=testgdsmm glxgears & AMD_DEBUG=testgdsmm glxgears &
AMD_DEBUG=testgdsmm glxgears & AMD_DEBUG=testgdsmm glxgears &
AMD_DEBUG=testgdsmm glxgears
Marek
On Tue, May 14, 2019 at 8:31 AM Christian König
<[email protected]<mailto:[email protected]>>
wrote:
This avoids OOM situations when we have lots of threads
submitting at the same time.
Signed-off-by: Christian König
<[email protected]<mailto:[email protected]>>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index fff558cf385b..f9240a94217b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -648,7 +648,7 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p,
}
r = ttm_eu_reserve_buffers(&p->ticket, &p->validated, true,
- &duplicates, true);
+ &duplicates, false);
if (unlikely(r != 0)) {
if (r != -ERESTARTSYS)
DRM_ERROR("ttm_eu_reserve_buffers failed.\n");
--
2.17.1
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