[Intel-gfx] [PATCH] drm/i915: Rename engine->semaphore.sync_to, engine->sempahore.signal locals

Joonas Lahtinen joonas.lahtinen at linux.intel.com
Fri Jul 22 09:38:49 UTC 2016


On pe, 2016-07-22 at 10:31 +0100, Chris Wilson wrote:
> On Fri, Jul 22, 2016 at 12:28:11PM +0300, Joonas Lahtinen wrote:
> > 
> > On pe, 2016-07-22 at 10:14 +0100, Chris Wilson wrote:
> > > 
> > >  	/* When the !RCS engines idle waiting upon a semaphore, they lose their
> > >  	 * pagetables and we must reload them before executing the batch.
> > >  	 * We do this on the i915_switch_context() following the wait and
> > >  	 * before the dispatch.
> > >  	 */
> > > -	ppgtt = wait->ctx->ppgtt;
> > > -	if (ppgtt && wait->engine->id != RCS)
> > > -		ppgtt->pd_dirty_rings |= intel_engine_flag(wait->engine);
> > > +	ppgtt = req->ctx->ppgtt;
> > This assignment could still be lifted up.
> I'm not a huge believe in gcc's live range analysis :)

It's Open Source :P We can optimize the culprit once there is need.

> -Chris
> > 
> > 
-- 
Joonas Lahtinen
Open Source Technology Center
Intel Corporation


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