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Message-ID: <20240906081302.4aba8c45@collabora.com> Date: Fri, 6 Sep 2024 08:13:02 +0200 From: Boris Brezillon <boris.brezillon@...labora.com> To: Mary Guillemard <mary.guillemard@...labora.com> Cc: linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org, Christopher Healy <healych@...zon.com>, kernel@...labora.com, Steven Price <steven.price@....com>, Liviu Dudau <liviu.dudau@....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> Subject: Re: [PATCH v2 1/2] drm/panthor: Add PANTHOR_GROUP_PRIORITY_REALTIME group priority On Thu, 5 Sep 2024 19:32:22 +0200 Mary Guillemard <mary.guillemard@...labora.com> wrote: > This adds a new value to drm_panthor_group_priority exposing the > realtime priority to userspace. > > This is required to implement NV_context_priority_realtime in Mesa. > > v2: > - Add Steven Price r-b > > Signed-off-by: Mary Guillemard <mary.guillemard@...labora.com> > Reviewed-by: Steven Price <steven.price@....com> Reviewed-by: Boris Brezillon <boris.brezillon@...labora.com> > --- > drivers/gpu/drm/panthor/panthor_drv.c | 2 +- > drivers/gpu/drm/panthor/panthor_sched.c | 2 -- > include/uapi/drm/panthor_drm.h | 7 +++++++ > 3 files changed, 8 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/panthor/panthor_drv.c b/drivers/gpu/drm/panthor/panthor_drv.c > index 0caf9e9a8c45..7b1db2adcb4c 100644 > --- a/drivers/gpu/drm/panthor/panthor_drv.c > +++ b/drivers/gpu/drm/panthor/panthor_drv.c > @@ -1041,7 +1041,7 @@ static int group_priority_permit(struct drm_file *file, > u8 priority) > { > /* Ensure that priority is valid */ > - if (priority > PANTHOR_GROUP_PRIORITY_HIGH) > + if (priority > PANTHOR_GROUP_PRIORITY_REALTIME) > return -EINVAL; > > /* Medium priority and below are always allowed */ > diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/panthor/panthor_sched.c > index 91a31b70c037..86908ada7335 100644 > --- a/drivers/gpu/drm/panthor/panthor_sched.c > +++ b/drivers/gpu/drm/panthor/panthor_sched.c > @@ -137,8 +137,6 @@ enum panthor_csg_priority { > * non-real-time groups. When such a group becomes executable, > * it will evict the group with the lowest non-rt priority if > * there's no free group slot available. > - * > - * Currently not exposed to userspace. > */ > PANTHOR_CSG_PRIORITY_RT, > > diff --git a/include/uapi/drm/panthor_drm.h b/include/uapi/drm/panthor_drm.h > index 1fd8473548ac..011a555e4674 100644 > --- a/include/uapi/drm/panthor_drm.h > +++ b/include/uapi/drm/panthor_drm.h > @@ -720,6 +720,13 @@ enum drm_panthor_group_priority { > * Requires CAP_SYS_NICE or DRM_MASTER. > */ > PANTHOR_GROUP_PRIORITY_HIGH, > + > + /** > + * @PANTHOR_GROUP_PRIORITY_REALTIME: Realtime priority group. > + * > + * Requires CAP_SYS_NICE or DRM_MASTER. > + */ > + PANTHOR_GROUP_PRIORITY_REALTIME, > }; > > /**
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