[PATCH 1/4] drm/sched: returns struct drm_gpu_scheduler ** for drm_sched_pick_best

[Andrey Grodzovsky]

So this is the real need of this patch-set, but this explanation doesn't 
appear anywhere in the description.
It's always good to add a short 0 RFC patch which describes the 
intention of the patchset if the code is
not self explanatory.

And I still don't understand the need - i don't see anything in 
amdgpu_ctx_fini_entity regarding
rings tracking ? Is it a new code you plan to add and not included in 
this patcheset ? Did i miss an
earlier patch maybe ?

Andrey

On 2022-09-08 10:45, James Zhu wrote:
> To save lines is not the purpose.
>
> Also I want to use entity->sched_list to track ring which is used in 
> this ctx in amdgpu_ctx_fini_entity
>
> Best Regards!
>
> James
>
> On 2022-09-08 10:38 a.m., Andrey Grodzovsky wrote:
>> I guess it's an option but i don't really see what's the added value  
>> ? You saved a few lines in this patch
>> but added a few lines in another. In total seems to me no to much 
>> difference ?
>>
>> Andrey
>>
>> On 2022-09-08 10:17, James Zhu wrote:
>>> Hi Andrey
>>>
>>> Basically this entire patch set are derived from patch [3/4]: 
>>> entity->sched_list = num_sched_list > 1 ? sched_list : NULL;
>>>
>>> I think no special reason to treat single and multiple schedule list 
>>> here.
>>>
>>> Best Regards!
>>>
>>> James
>>>
>>> On 2022-09-08 10:08 a.m., Andrey Grodzovsky wrote:
>>>> What's the reason for this entire patch set ?
>>>>
>>>> Andrey
>>>>
>>>> On 2022-09-07 16:57, James Zhu wrote:
>>>>> drm_sched_pick_best returns struct drm_gpu_scheduler ** instead of
>>>>> struct drm_gpu_scheduler *
>>>>>
>>>>> Signed-off-by: James Zhu <James.Zhu at amd.com>
>>>>> ---
>>>>>   include/drm/gpu_scheduler.h | 2 +-
>>>>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>>>>
>>>>> diff --git a/include/drm/gpu_scheduler.h 
>>>>> b/include/drm/gpu_scheduler.h
>>>>> index 0fca8f38bee4..011f70a43397 100644
>>>>> --- a/include/drm/gpu_scheduler.h
>>>>> +++ b/include/drm/gpu_scheduler.h
>>>>> @@ -529,7 +529,7 @@ void drm_sched_fence_finished(struct 
>>>>> drm_sched_fence *fence);
>>>>>   unsigned long drm_sched_suspend_timeout(struct drm_gpu_scheduler 
>>>>> *sched);
>>>>>   void drm_sched_resume_timeout(struct drm_gpu_scheduler *sched,
>>>>>                           unsigned long remaining);
>>>>> -struct drm_gpu_scheduler *
>>>>> +struct drm_gpu_scheduler **
>>>>>   drm_sched_pick_best(struct drm_gpu_scheduler **sched_list,
>>>>>                unsigned int num_sched_list);