[PATCH 1/6] drm/ttm: add on_alloc_stage and reservation into ttm_operation_ctx

[Christian König]

Hi Thomas,

sorry for that. Noted on the rest of that series as well that we need to 
improve the commit messages. But this one somehow slipped through 
because I discussed this change previously internally with Roger.

That made the change completely logical for me, but without this context 
everybody else just thinks "Hui what?". Going to keep that in mind the 
next time.

But back to topic: This series allows BOs which share the same 
reservation object as the BO currently allocated/validated to be evicted 
even when they are reserved.

This is useful because amdgpu wants to use a single reservation object 
for almost all BOs of a process.

Regards,
Christian.

Am 13.12.2017 um 20:21 schrieb Thomas Hellstrom:
> Hi,
>
> I think this series is quite poorly documented. We should have a log 
> message explaining the purpose of the commit.
> Also since it's not obvious what the series is attempting to achieve, 
> please add a 0/X series header message..
>
> /Thomas
>
>
> On 12/12/2017 10:33 AM, Roger He wrote:
>> on_alloc_stage: is this operation on allocation stage
>> resv: reservation bo used of this operation
>>
>> Change-Id: I01ea482e8c7470014196eb218e2ff8913306eef0
>> Signed-off-by: Roger He <Hongbo.He at amd.com>
>> ---
>>   include/drm/ttm/ttm_bo_api.h | 4 ++++
>>   1 file changed, 4 insertions(+)
>>
>> diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
>> index 368eb02..25de597 100644
>> --- a/include/drm/ttm/ttm_bo_api.h
>> +++ b/include/drm/ttm/ttm_bo_api.h
>> @@ -263,6 +263,8 @@ struct ttm_bo_kmap_obj {
>>    *
>>    * @interruptible: Sleep interruptible if sleeping.
>>    * @no_wait_gpu: Return immediately if the GPU is busy.
>> + * @on_alloc_stage: is this operation on allocation stage
>> + * @resv: resvation bo used
>>    *
>>    * Context for TTM operations like changing buffer placement or 
>> general memory
>>    * allocation.
>> @@ -270,6 +272,8 @@ struct ttm_bo_kmap_obj {
>>   struct ttm_operation_ctx {
>>       bool interruptible;
>>       bool no_wait_gpu;
>> +    bool on_alloc_stage;
>> +    struct reservation_object *resv;
>>       uint64_t bytes_moved;
>>   };
>
>
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