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drm/mgag200: Enable caching for SHMEM pages

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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
This commit is contained in:
Thomas Zimmermann 2020-07-30 12:28:37 +02:00
parent cff0adca1e
commit 0b34d58b6c
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/mgag200/mgag200_drv.c
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@ -36,6 +36,7 @@ static struct drm_driver mgag200_driver = {
.major = DRIVER_MAJOR, .major = DRIVER_MAJOR,
.minor = DRIVER_MINOR, .minor = DRIVER_MINOR,
.patchlevel = DRIVER_PATCHLEVEL, .patchlevel = DRIVER_PATCHLEVEL,
.gem_create_object = drm_gem_shmem_create_object_cached,
DRM_GEM_SHMEM_DRIVER_OPS, DRM_GEM_SHMEM_DRIVER_OPS,
}; };