Re: [PATCH 4/7] drm/radeon: Fill out gem_object->resv

[Daniel Vetter <daniel-/w4YWyX8dFk@public.gmane.org>]

On Wed, Jun 26, 2019 at 07:10:21AM +0000, Koenig, Christian wrote:
> Those patches would become superfluous when merging Gerd's work.

Not entirely, they still remove the gem_prime_res_obj. Setting up
gem_bo.resv is only one half of what these do here. And yeah I think that
single addition can be removed again when Gerd's stuff lands.
 
> But I'm not sure if that is going to fly soon or not.

I think r-b from Thomas Zimmermann (or some other ttm+gem stakeholder) and
we're good to land them. Thomas Hellstrom mellowed down his "nack" to
"I'll look at this in August again and course-correct if necessary".
-Daniel

> 
> Christian.
> 
> Am 25.06.19 um 22:42 schrieb Daniel Vetter:
> > That way we can ditch our gem_prime_res_obj implementation. Since ttm
> > absolutely needs the right reservation object all the boilerplate is
> > already there and we just have to wire it up correctly.
> >
> > Note that gem/prime doesn't care when we do this, as long as we do it
> > before the bo is registered and someone can call the handle2fd ioctl
> > on it.
> >
> > Aside: ttm_buffer_object.ttm_resv could probably be ditched in favour
> > of always passing a non-NULL resv to ttm_bo_init(). At least for gem
> > drivers that would avoid having two of these, on in ttm_buffer_object
> > and the other in drm_gem_object, one just there for confusion.
> >
> > Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
> > Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> > Cc: Alex Deucher <alexander.deucher@amd.com>
> > Cc: "Christian König" <christian.koenig@amd.com>
> > Cc: "David (ChunMing) Zhou" <David1.Zhou@amd.com>
> > Cc: amd-gfx@lists.freedesktop.org
> > ---
> >   drivers/gpu/drm/radeon/radeon_drv.c    | 2 --
> >   drivers/gpu/drm/radeon/radeon_object.c | 1 +
> >   drivers/gpu/drm/radeon/radeon_prime.c  | 7 -------
> >   3 files changed, 1 insertion(+), 9 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
> > index 4403e76e1ae0..a4a78dfdef37 100644
> > --- a/drivers/gpu/drm/radeon/radeon_drv.c
> > +++ b/drivers/gpu/drm/radeon/radeon_drv.c
> > @@ -152,7 +152,6 @@ struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev,
> >   							struct sg_table *sg);
> >   int radeon_gem_prime_pin(struct drm_gem_object *obj);
> >   void radeon_gem_prime_unpin(struct drm_gem_object *obj);
> > -struct reservation_object *radeon_gem_prime_res_obj(struct drm_gem_object *);
> >   void *radeon_gem_prime_vmap(struct drm_gem_object *obj);
> >   void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
> >   
> > @@ -566,7 +565,6 @@ static struct drm_driver kms_driver = {
> >   	.gem_prime_export = radeon_gem_prime_export,
> >   	.gem_prime_pin = radeon_gem_prime_pin,
> >   	.gem_prime_unpin = radeon_gem_prime_unpin,
> > -	.gem_prime_res_obj = radeon_gem_prime_res_obj,
> >   	.gem_prime_get_sg_table = radeon_gem_prime_get_sg_table,
> >   	.gem_prime_import_sg_table = radeon_gem_prime_import_sg_table,
> >   	.gem_prime_vmap = radeon_gem_prime_vmap,
> > diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
> > index 21f73fc86f38..7a2bad843f8a 100644
> > --- a/drivers/gpu/drm/radeon/radeon_object.c
> > +++ b/drivers/gpu/drm/radeon/radeon_object.c
> > @@ -262,6 +262,7 @@ int radeon_bo_create(struct radeon_device *rdev,
> >   	r = ttm_bo_init(&rdev->mman.bdev, &bo->tbo, size, type,
> >   			&bo->placement, page_align, !kernel, acc_size,
> >   			sg, resv, &radeon_ttm_bo_destroy);
> > +	bo->gem_base.resv = bo->tbo.resv;
> >   	up_read(&rdev->pm.mclk_lock);
> >   	if (unlikely(r != 0)) {
> >   		return r;
> > diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c
> > index deaffce50a2e..8ce3e8045d42 100644
> > --- a/drivers/gpu/drm/radeon/radeon_prime.c
> > +++ b/drivers/gpu/drm/radeon/radeon_prime.c
> > @@ -117,13 +117,6 @@ void radeon_gem_prime_unpin(struct drm_gem_object *obj)
> >   }
> >   
> >   
> > -struct reservation_object *radeon_gem_prime_res_obj(struct drm_gem_object *obj)
> > -{
> > -	struct radeon_bo *bo = gem_to_radeon_bo(obj);
> > -
> > -	return bo->tbo.resv;
> > -}
> > -
> >   struct dma_buf *radeon_gem_prime_export(struct drm_gem_object *gobj,
> >   					int flags)
> >   {
> 

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