[PATCH] dma-buf/fence: fix fence_is_later v2

[Sumit Semwal]

Hi Daniel,
On 29-Feb-2016 9:18 pm, "Daniel Vetter" <daniel at ffwll.ch> wrote:
>
> On Tue, Feb 23, 2016 at 11:04:57AM +0900, Michel Dänzer wrote:
> > On 23.02.2016 04:32, Alex Deucher wrote:
> > > From: Christian König <christian.koenig at amd.com>
> > >
> > > A fence is never later than itself. This caused a bunch of overhead
for AMDGPU.
> > >
> > > v2: simplify check as suggested by Michel.
> > >
> > > Signed-off-by: Christian König <christian.koenig at amd.com>
> > > Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>
> > > Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
> > > Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> > > ---
> > >  include/linux/fence.h | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/include/linux/fence.h b/include/linux/fence.h
> > > index bb52201..5aa95eb 100644
> > > --- a/include/linux/fence.h
> > > +++ b/include/linux/fence.h
> > > @@ -292,7 +292,7 @@ static inline bool fence_is_later(struct fence
*f1, struct fence *f2)
> > >     if (WARN_ON(f1->context != f2->context))
> > >             return false;
> > >
> > > -   return f1->seqno - f2->seqno < INT_MAX;
> > > +   return (int)(f1->seqno - f2->seqno) > 0;
> > >  }
> > >
> > >  /**
> > >
> >
> > According to
> >
> >  scripts/get_maintainer.pl include/linux/fence.h
> >
> > this patch should be sent to:
> >
> > Sumit Semwal <sumit.semwal at linaro.org> (maintainer:DMA BUFFER SHARING
FRAMEWORK)
> > linux-media at vger.kernel.org (open list:DMA BUFFER SHARING FRAMEWORK)
> > dri-devel at lists.freedesktop.org (open list:DMA BUFFER SHARING FRAMEWORK)
> > linaro-mm-sig at lists.linaro.org (moderated list:DMA BUFFER SHARING
FRAMEWORK)
> > linux-kernel at vger.kernel.org (open list)
> >
> > I'd add at least Sumit and the linaro-mm-sig list.
>
> Plus Maarten Lankhorst please, and Gustavo Padovan maybe. Not sure Sumit
> is still all that active on dma-buf/fence maintainership ...
Am here very much, though I do apologize I haven't actively provided review
comments on the fence related series. I'll improve on that for sure!

Yes, it is still a good idea to add Maarten for fence stuff in the least.
> -Daniel
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
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