diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2019-11-07 10:43:06 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2019-11-08 12:30:07 +0100 |
| commit | 08b22f65b309649057edfbae1d8772b04210b486 (patch) | |
| tree | 235cfcc142e557bfeba276b716e236714196e845 /drivers/gpu/drm/udl/udl_drv.h | |
| parent | 1d48b9e988a8874225e38fc1ac9967666e7eafd7 (diff) | |
| download | linux-next-08b22f65b309649057edfbae1d8772b04210b486.tar.gz | |
drm/udl: Switch to SHMEM
Udl's GEM code and the generic SHMEM are almost identical. Replace
the former with SHMEM. The dmabuf support in udl is being replaced
with generic GEM PRIME functions.
The main difference is in the caching flags for mmap pages. By
default, SHMEM always sets (uncached) write combining. In udl's
memory management code, only imported buffers use write combining.
Memory pages of locally created buffer objects are mmap'ed with
caching enabled. To keep the optimization, udl provides its own
mmap function for GEM objects where it fixes up the mapping flags.
v3:
- restore udl vmap that enables caching
v2:
- remove obsolete code in a separate patch
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107094307.19870-4-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/udl/udl_drv.h')
| -rw-r--r-- | drivers/gpu/drm/udl/udl_drv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h index fc312e791d18..630e64abc986 100644 --- a/drivers/gpu/drm/udl/udl_drv.h +++ b/drivers/gpu/drm/udl/udl_drv.h @@ -85,6 +85,7 @@ struct udl_gem_object { struct udl_framebuffer { struct drm_framebuffer base; struct udl_gem_object *obj; + struct drm_gem_shmem_object *shmem; bool active_16; /* active on the 16-bit channel */ }; |