linux-kernel - [RFC][PATCH 2/3] drm: vgem: Enable SYNCOBJ and SYNCOBJ

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Date:   Tue, 12 Jul 2022 04:22:57 +0000
From:   John Stultz <jstultz@...gle.com>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     John Stultz <jstultz@...gle.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Jason Ekstrand <jason@...kstrand.net>,
        "Christian König" <christian.koenig@....com>,
        Lionel Landwerlin <lionel.g.landwerlin@...el.com>,
        Chunming Zhou <david1.zhou@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org
Subject: [RFC][PATCH 2/3] drm: vgem: Enable SYNCOBJ and SYNCOBJ_TIMELINE on
 vgem driver

Allows for basic SYNCOBJ api testing, in environments
like VMs where there may not be a supported drm driver.

Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
Cc: Maxime Ripard <mripard@...nel.org>
Cc: Thomas Zimmermann <tzimmermann@...e.de>
Cc: Jason Ekstrand <jason@...kstrand.net>
Cc: Christian König <christian.koenig@....com>
Cc: Lionel Landwerlin <lionel.g.landwerlin@...el.com>
Cc: Chunming Zhou <david1.zhou@....com>
Cc: David Airlie <airlied@...ux.ie>
Cc: Daniel Vetter <daniel@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org
Signed-off-by: John Stultz <jstultz@...gle.com>
---
 drivers/gpu/drm/vgem/vgem_drv.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c
index c5e3e5457737..e5427d7399da 100644
--- a/drivers/gpu/drm/vgem/vgem_drv.c
+++ b/drivers/gpu/drm/vgem/vgem_drv.c
@@ -109,7 +109,8 @@ static struct drm_gem_object *vgem_gem_create_object(struct drm_device *dev, siz
 }
 
 static const struct drm_driver vgem_driver = {
-	.driver_features		= DRIVER_GEM | DRIVER_RENDER,
+	.driver_features		= DRIVER_GEM | DRIVER_RENDER |
+					  DRIVER_SYNCOBJ | DRIVER_SYNCOBJ_TIMELINE,
 	.open				= vgem_open,
 	.postclose			= vgem_postclose,
 	.ioctls				= vgem_ioctls,
-- 
2.37.0.144.g8ac04bfd2-goog