linux-kernel - Re: [PATCH 2/3] drm/etnaviv: Expose our reservation object when exporting a dmabuf.

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Message-ID: <1492001645.15082.14.camel@pengutronix.de>
Date:   Wed, 12 Apr 2017 14:54:05 +0200
From:   Lucas Stach <l.stach@...gutronix.de>
To:     Daniel Vetter <daniel@...ll.ch>
Cc:     Eric Anholt <eric@...olt.net>, stable@...r.kernel.org,
        Russell King <linux+etnaviv@...linux.org.uk>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        etnaviv@...ts.freedesktop.org
Subject: Re: [PATCH 2/3] drm/etnaviv: Expose our reservation object when
 exporting a dmabuf.

Am Mittwoch, den 12.04.2017, 14:47 +0200 schrieb Daniel Vetter:
> On Mon, Apr 10, 2017 at 06:44:13PM -0700, Eric Anholt wrote:
> > Without this, polling on the dma-buf (and presumably other devices
> > synchronizing against our rendering) would return immediately, even
> > while the BO was busy.
> > 
> > Signed-off-by: Eric Anholt <eric@...olt.net>
> > Cc: stable@...r.kernel.org
> > Cc: Lucas Stach <l.stach@...gutronix.de>
> > Cc: Russell King <linux+etnaviv@...linux.org.uk>
> > Cc: Christian Gmeiner <christian.gmeiner@...il.com>
> > Cc: etnaviv@...ts.freedesktop.org
> 
> On the first 2 patches:
> 
> Reviewed-by: Daniel Vetter <daniel.vetter@...ll.ch>
> 
> If you get an ack from Rob/Lucas I guess we could push these also through
> drm-misc.

Patch itself looks fine. I prefer to route the etnaviv change through my
tree, to give it the usual exposure to our testing.

Regards,
Lucas

> 
> > ---
> > 
> > Note: compile-tested only.
> > 
> >  drivers/gpu/drm/etnaviv/etnaviv_drv.c       | 1 +
> >  drivers/gpu/drm/etnaviv/etnaviv_drv.h       | 1 +
> >  drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c | 7 +++++++
> >  3 files changed, 9 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
> > index 587e45043542..ff6db8f0d966 100644
> > --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
> > +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
> > @@ -495,6 +495,7 @@ static struct drm_driver etnaviv_drm_driver = {
> >  	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
> >  	.gem_prime_export   = drm_gem_prime_export,
> >  	.gem_prime_import   = drm_gem_prime_import,
> > +	.gem_prime_res_obj  = etnaviv_gem_prime_res_obj,
> >  	.gem_prime_pin      = etnaviv_gem_prime_pin,
> >  	.gem_prime_unpin    = etnaviv_gem_prime_unpin,
> >  	.gem_prime_get_sg_table = etnaviv_gem_prime_get_sg_table,
> > diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.h b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
> > index e41f38667c1c..058389f93b69 100644
> > --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.h
> > +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
> > @@ -80,6 +80,7 @@ void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj);
> >  void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
> >  int etnaviv_gem_prime_mmap(struct drm_gem_object *obj,
> >  			   struct vm_area_struct *vma);
> > +struct reservation_object *etnaviv_gem_prime_res_obj(struct drm_gem_object *obj);
> >  struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
> >  	struct dma_buf_attachment *attach, struct sg_table *sg);
> >  int etnaviv_gem_prime_pin(struct drm_gem_object *obj);
> > diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
> > index 62b47972a52e..abed6f781281 100644
> > --- a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
> > +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
> > @@ -150,3 +150,10 @@ struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev,
> >  
> >  	return ERR_PTR(ret);
> >  }
> > +
> > +struct reservation_object *etnaviv_gem_prime_res_obj(struct drm_gem_object *obj)
> > +{
> > +	struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj);
> > +
> > +	return etnaviv_obj->resv;
> > +}
> > -- 
> > 2.11.0
> > 
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@...ts.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> 

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