shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 11:26:02 +09:00
Code Issues Packages Projects Releases Wiki Activity

dt-bindings: reserved-memory: introduce 'inactive' property

Browse Source 
Add a new property 'inactive' for reserved memory node, which used for
reserved memory region with 'reusable' property.

When a reserved memory region with 'reusable' property, the operating
system can allocate pages from the CMA region and move outside of CMA
region when cma allocate happend.

The new property 'inactive' can set the CMA region to seperate from the
operating system pages, make the region only used by cma allocate, and
not need to do isolate range.

Change-Id: Id99a1433fb9c36cc10b3293436292efff28cac25
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
This commit is contained in:
Jianqun Xu
2020-06-30 09:18:47 +08:00
committed by Tao Huang
parent 96b2bffcd5
commit 99fc5eea94
1 changed files with 3 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
View File

@@ -63,6 +63,9 @@ reusable (optional) - empty property
able to reclaim it back. Typically that means that the operating
system can use that region to store volatile or cached data that
can be otherwise regenerated or migrated elsewhere.
inactive (optional) - empty property
- Indicates the operating system must not active the region. It's only
do active or inactive for region reusable.
Linux implementation note:
- If a "linux,cma-default" property is present, then Linux will use the