Re: [PATCH v19 22/30] drm/shmem-helper: Add common memory shrinker

From: Dmitry Osipenko
Date: Wed Mar 05 2025 - 06:27:57 EST


On 3/4/25 14:43, Thomas Zimmermann wrote:
> Hi
>
> Am 04.03.25 um 11:59 schrieb Dmitry Osipenko:
>> On 3/4/25 13:29, Thomas Zimmermann wrote:
>>> Hi
>>>
>>> Am 05.01.24 um 19:46 schrieb Dmitry Osipenko:
>>>> Introduce common drm-shmem shrinker for DRM drivers.
>>> What's the status of this patch?
>> It was de-prioritized on my list a year ago as I had to move to a higher
>> priority problems. Rebasing and re-testing these patches takes much
>> time, it either has to be split up in a smaller parts or applied in
>> one go.
>
> The first 11 patches seem uncontroversial to me; maybe except for patch
> 9. Could they be merged any time soon?
>
> The next batch could then be patches up to #20, which seem to be
> reviewed as well.
>
>>
>> The current status is that I started to work on v20 rather long time ago
>> and the patches need to be rebased and re-tested again. Heard that
>> Panthor driver may want shmem shrinker more than others today.
>
> I've been receiving reports about low performance of ast plus gem-shmem
> recently. I suspect that the vmap/vunmap overhead could be related and
> this series would likely lessen the problem.

Alright, will refresh the patches. See if the first ones sill can be
merged right away and then split the remainder into batches.

--
Best regards,
Dmitry