linux-kernel - Re: [PATCH v1 4/6] drm/lima: handle spurious timeouts due to high irq latency

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Date: Thu, 18 Jan 2024 12:38:15 +0100
From: Erico Nunes <nunes.erico@...il.com>
To: Qiang Yu <yuq825@...il.com>
Cc: dri-devel@...ts.freedesktop.org, lima@...ts.freedesktop.org, 
	anarsoul@...il.com, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
	Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
	David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
	Sumit Semwal <sumit.semwal@...aro.org>, christian.koenig@....com, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 4/6] drm/lima: handle spurious timeouts due to high irq latency

On Thu, Jan 18, 2024 at 3:46 AM Qiang Yu <yuq825@...il.com> wrote:
>
> On Wed, Jan 17, 2024 at 11:12 AM Erico Nunes <nunes.erico@...il.com> wrote:
> > diff --git a/drivers/gpu/drm/lima/lima_sched.h b/drivers/gpu/drm/lima/lima_sched.h
> > index 6a11764d87b3..34050facb110 100644
> > --- a/drivers/gpu/drm/lima/lima_sched.h
> > +++ b/drivers/gpu/drm/lima/lima_sched.h
> > @@ -29,6 +29,8 @@ struct lima_sched_task {
> >         bool recoverable;
> >         struct lima_bo *heap;
> >
> > +       struct dma_fence *done_fence;
> This is same as the following fence, do we really need a duplicated one?

Checking again now, I think we can reuse the existing one.