Re: [PATCH 2/2] drm: Revert syncobj timeline changes.

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zhoucm1 <zhoucm1@xxxxxxx> writes:

> On 2018年11月09日 00:52, Christian König wrote:
>> Am 08.11.18 um 17:07 schrieb Koenig, Christian:
>>> Am 08.11.18 um 17:04 schrieb Eric Anholt:
>>>> Daniel suggested I submit this, since we're still seeing regressions
>>>> from it.  This is a revert to before 48197bc564c7 ("drm: add syncobj
>>>> timeline support v9") and its followon fixes.
>>> This is a harmless false positive from lockdep, Chouming and I are
>>> already working on a fix.
>>
>> On the other hand we had enough trouble with that patch, so if it 
>> really bothers you feel free to add my Acked-by: Christian König 
>> <christian.koenig@xxxxxxx> and push it.
> NAK, please no, I don't think this needed, the Warning totally isn't 
> related to syncobj timeline, but fence-array implementation flaw, just 
> exposed by syncobj.
> In addition, Christian already has a fix for this Warning, I've tested. 
> Please Christian send to public review.

I backed out my revert of #2 (#1 still necessary) after adding the
lockdep regression fix, and now my CTS run got oomkilled after just a
few hours, with these notable lines in the unreclaimable slab info list:

[ 6314.373099] drm_sched_fence        69095KB      69095KB
[ 6314.373653] kmemleak_object       428249KB     428384KB
[ 6314.373736] kmalloc-262144           256KB        256KB
[ 6314.373743] kmalloc-131072           128KB        128KB
[ 6314.373750] kmalloc-65536             64KB         64KB
[ 6314.373756] kmalloc-32768           1472KB       1728KB
[ 6314.373763] kmalloc-16384             64KB         64KB
[ 6314.373770] kmalloc-8192             208KB        208KB
[ 6314.373778] kmalloc-4096            2408KB       2408KB
[ 6314.373784] kmalloc-2048             288KB        336KB
[ 6314.373792] kmalloc-1024            1457KB       1512KB
[ 6314.373800] kmalloc-512              854KB       1048KB
[ 6314.373808] kmalloc-256              188KB        268KB
[ 6314.373817] kmalloc-192            69141KB      69142KB
[ 6314.373824] kmalloc-64             47703KB      47704KB
[ 6314.373886] kmalloc-128            46396KB      46396KB
[ 6314.373894] kmem_cache                31KB         35KB

No results from kmemleak, though.

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