From 0b34d58b6c321a30b5a97ec6c9a71e6f472827d2 Mon Sep 17 00:00:00 2001
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: Thu, 30 Jul 2020 12:28:37 +0200
Subject: [PATCH] drm/mgag200: Enable caching for SHMEM pages
SHMEM pages use write-combine caching by default, but can also use the
platform's default page caching. Doing so may improve the performance
of I/O on the framebuffer.
Mgag200's hardware does not access framebuffer pages directly (i.e.,
via DMA), so enabling caching does not have an effect on consistency
of the framebuffer memory or the displayed data.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200730102844.10995-2-tzimmermann@suse.de
---
drivers/gpu/drm/mgag200/mgag200_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.c b/drivers/gpu/drm/mgag200/mgag200_drv.c
index e19660f4a6371..7189c7745baf8 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.c
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.c
@@ -36,6 +36,7 @@ static struct drm_driver mgag200_driver = {
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
.patchlevel = DRIVER_PATCHLEVEL,
+ .gem_create_object = drm_gem_shmem_create_object_cached,
DRM_GEM_SHMEM_DRIVER_OPS,
};
--
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