I believe I found a live-lock due to this patch when running our KFD
eviction test in a loop. I pretty reliably hangs on the second loop
iteration. If I revert this patch, the problem disappears.
With some added instrumentation, I see that amdgpu_cs_list_validate in
amdgpu_cs_parser_bos
BOs on the LRU might be blocked during command submission
and cause OOM situations.
Avoid this by blocking for the first busy BO not locked by
the same ticket as the BO we are searching space for.
v10: completely start over with the patch since we didn't
handled a whole bunch of corner
To: Zhou, David(ChunMing) ; Olsak, Marek ; Zhou,
David(ChunMing) ; Liang, Prike ;
dri-de...@lists.freedesktop.org; amd-gfx@lists.freedesktop.org
Subject: Re: [PATCH 06/10] drm/ttm: fix busy memory to fail other user v10
[CAUTION: External Email]
Am 23.05.19 um 12:24 schrieb zhoucm1:
On 2019年05月22
] drm/ttm: fix busy memory to fail other user v10
[CAUTION: External Email]
Am 23.05.19 um 12:24 schrieb zhoucm1:
>
>
> On 2019年05月22日 20:59, Christian König wrote:
>> [CAUTION: External Email]
>>
>> BOs on the LRU might be blocked during command submission and cause
>
Am 23.05.19 um 13:50 schrieb Zhou, David(ChunMing):
> 在 2019/5/23 19:03, Christian König 写道:
>> [CAUTION: External Email]
>>
>> Am 23.05.19 um 12:24 schrieb zhoucm1:
>>>
>>> On 2019年05月22日 20:59, Christian König wrote:
[CAUTION: External Email]
BOs on the LRU might be blocked during
在 2019/5/23 19:03, Christian König 写道:
> [CAUTION: External Email]
>
> Am 23.05.19 um 12:24 schrieb zhoucm1:
>>
>>
>> On 2019年05月22日 20:59, Christian König wrote:
>>> [CAUTION: External Email]
>>>
>>> BOs on the LRU might be blocked during command submission
>>> and cause OOM situations.
>>>
>>>
Am 23.05.19 um 12:24 schrieb zhoucm1:
On 2019年05月22日 20:59, Christian König wrote:
[CAUTION: External Email]
BOs on the LRU might be blocked during command submission
and cause OOM situations.
Avoid this by blocking for the first busy BO not locked by
the same ticket as the BO we are
On 2019年05月22日 20:59, Christian König wrote:
[CAUTION: External Email]
BOs on the LRU might be blocked during command submission
and cause OOM situations.
Avoid this by blocking for the first busy BO not locked by
the same ticket as the BO we are searching space for.
v10: completely start
BOs on the LRU might be blocked during command submission
and cause OOM situations.
Avoid this by blocking for the first busy BO not locked by
the same ticket as the BO we are searching space for.
v10: completely start over with the patch since we didn't
handled a whole bunch of corner
