drm/i915/gvt: Refine the combined intel_vgpu_oos_page struct to save memory

Browse source

The intel_vgpu_oos_page uses the combined structure, which embeds the
tracked page. As it is allocated by kmalloc, the size(4140) is aligned
to 8192. The 8192 oos_pages will waste about 32M memory.
So the tracked page is split from the intel_vgpu_oos_page. And this will
help to assure that the access of tracked page is cache aligned.

Another minor change is that it doesn't need to be cleared to zero as
it is writen firstly when one page is added to oos_page list.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

...

This commit is contained in:

Zhao Yakui 2019-02-20 12:07:45 +08:00 • committed by Zhenyu Wang

parent f74a6d9a2c

commit ed47c5cb8e

2 changed files with 8 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

7

drivers/gpu/drm/i915/gvt/gtt.c

View file

2

drivers/gpu/drm/i915/gvt/gtt.h

View file