Re: [Linaro-mm-sig] [PATCH] dma-buf: avoid scheduling on fence status query v2

2017-05-24 Thread Daniel Vetter 
On Wed, May 24, 2017 at 09:47:49AM +1000, Dave Airlie wrote:
> On 28 April 2017 at 07:27, Gustavo Padovan  wrote:
> > 2017-04-26 Christian König :
> >
> >> Am 26.04.2017 um 16:46 schrieb Andres Rodriguez:
> >> > When a timeout of zero is specified, the caller is only interested in
> >> > the fence status.
> >> >
> >> > In the current implementation, dma_fence_default_wait will always call
> >> > schedule_timeout() at least once for an unsignaled fence. This adds a
> >> > significant overhead to a fence status query.
> >> >
> >> > Avoid this overhead by returning early if a zero timeout is specified.
> >> >
> >> > v2: move early return after enable_signaling
> >> >
> >> > Signed-off-by: Andres Rodriguez 
> >>
> >> Reviewed-by: Christian König 
> >
> > pushed to drm-misc-next. Thanks all.
> 
> I don't see this patch in -rc2, where did it end up going?

Queued for 4.13. Makes imo sense since it's just a performance
improvement, not a clear bugfix. But it's in your drm-next, so if you want
to fast-track you can cherry-pick it over:

commit 03c0c5f6641533f5fc14bf4e76d2304197402552
Author: Andres Rodriguez 
Date:   Wed Apr 26 10:46:20 2017 -0400

dma-buf: avoid scheduling on fence status query v2

Cheers, Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

Re: [Linaro-mm-sig] [PATCH] dma-buf: avoid scheduling on fence status query v2

2017-05-23 Thread Dave Airlie 
On 28 April 2017 at 07:27, Gustavo Padovan  wrote:
> 2017-04-26 Christian König :
>
>> Am 26.04.2017 um 16:46 schrieb Andres Rodriguez:
>> > When a timeout of zero is specified, the caller is only interested in
>> > the fence status.
>> >
>> > In the current implementation, dma_fence_default_wait will always call
>> > schedule_timeout() at least once for an unsignaled fence. This adds a
>> > significant overhead to a fence status query.
>> >
>> > Avoid this overhead by returning early if a zero timeout is specified.
>> >
>> > v2: move early return after enable_signaling
>> >
>> > Signed-off-by: Andres Rodriguez 
>>
>> Reviewed-by: Christian König 
>
> pushed to drm-misc-next. Thanks all.

I don't see this patch in -rc2, where did it end up going?

Dave.