linux-kernel - Re: [PATCHv4 3/3] drm/vgem: Enable dmabuf import interfaces

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Date:   Fri, 5 May 2017 09:51:46 +0100
From:   Chris Wilson <chris@...is-wilson.co.uk>
To:     Joe Perches <joe@...ches.com>
Cc:     Laura Abbott <labbott@...hat.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Sean Paul <seanpaul@...omium.org>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Sumit Semwal <sumit.semwal@...aro.org>,
        intel-gfx@...ts.freedesktop.org,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>
Subject: Re: [PATCHv4 3/3] drm/vgem: Enable dmabuf import interfaces

On Thu, May 04, 2017 at 09:09:54PM -0700, Joe Perches wrote:
> On Thu, 2017-05-04 at 21:25 +0100, Chris Wilson wrote:
> > On Thu, May 04, 2017 at 11:45:48AM -0700, Laura Abbott wrote:
> > > 
> > > Enable the GEM dma-buf import interfaces in addition to the export
> > > interfaces. This lets vgem be used as a test source for other allocators
> > > (e.g. Ion).
> > > 
> > > Reviewed-by: Chris Wilson <chris@...is-wilson.co.uk>
> > > Signed-off-by: Laura Abbott <labbott@...hat.com>
> > > ---
> > > v4: Use new drm_gem_prime_import_dev function
> > > ---
> > >  static const struct vm_operations_struct vgem_gem_vm_ops = {
> > > @@ -114,12 +142,8 @@ static void vgem_postclose(struct drm_device *dev, struct drm_file *file)
> > >  	kfree(vfile);
> > >  }
> > >  
> > > -/* ioctls */
> > > -
> > > -static struct drm_gem_object *vgem_gem_create(struct drm_device *dev,
> > > -					      struct drm_file *file,
> > > -					      unsigned int *handle,
> > > -					      unsigned long size)
> > > +static struct drm_vgem_gem_object *__vgem_gem_create(struct drm_device *dev,
> > > +						unsigned long size)
> > 
> > I'm going to guess that doesn't line up anymore. If checkpatch isn't
> > complaining, then sorry for the noise.
> 
> Because of the very long identifiers, perhaps a
> nicer way to write this is like:
> 
> static struct drm_vgem_gem_object *
> __vgen_gem_create(struct drm_device *dev, unsigned long size);

Yes, we frequently use that pattern for very_long_function_names.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre