[Intel-gfx] [PATCH] drm/i915: Skip fence installation for objects with rotated views (v2)

[Vivek]

On Wed, 23 Sep 2015 10:46:39 +0200
Daniel Vetter <daniel at ffwll.ch> wrote:

> On Fri, Sep 18, 2015 at 06:57:48PM -0700, Vivek Kasireddy wrote:
> > v2:
> > Look at the object's map_and_fenceable flag to determine whether to
> > install a fence or not (Chris).
> > 
> > v1:
> > While pinning a fb object to the display plane, only install a fence
> > if the object is using a normal view. This corresponds with the
> > behavior found in i915_gem_object_do_pin() where the fencability
> > criteria is determined only for objects with normal views.
> > 
> > Cc: Chris Wilson <chris at chris-wilson.co.uk>
> > Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> > Signed-off-by: Vivek Kasireddy <vivek.kasireddy at intel.com>
> 
> Where's the igt testcase for this bug that Tvrtko suggested?
> -Daniel
Hi Daniel,
I'll submit it in the next few days.


Thanks,
Vivek

> 
> > ---
> >  drivers/gpu/drm/i915/intel_display.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/intel_display.c
> > b/drivers/gpu/drm/i915/intel_display.c index 52fb3f2..108c000 100644
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/gpu/drm/i915/intel_display.c
> > @@ -2357,7 +2357,8 @@ intel_pin_and_fence_fb_obj(struct drm_plane
> > *plane,
> >  	 * framebuffer compression.  For simplicity, we always
> > install
> >  	 * a fence as the cost is not that onerous.
> >  	 */
> > -	ret = i915_gem_object_get_fence(obj);
> > +	if (obj->map_and_fenceable)
> > +		ret = i915_gem_object_get_fence(obj);
> >  	if (ret == -EDEADLK) {
> >  		/*
> >  		 * -EDEADLK means there are no free fences
> > -- 
> > 2.4.3
> > 
> > _______________________________________________
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> > Intel-gfx at lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/intel-gfx
>