Lines Matching full:cma

2 CMA Debugfs Interface
5 The CMA debugfs interface is useful to retrieve basic information out of the
6 different CMA areas and to test allocation/release in each of the areas.
8 Each CMA zone represents a directory under <debugfs>/cma/, indexed by the
9 kernel's CMA index. So the first CMA zone would be:
11 	<debugfs>/cma/cma-0
16  - [RO] count: Amount of memory in the CMA area.
19  - [WO] alloc: Allocate N pages from that CMA area. For example::
21 	echo 5 > <debugfs>/cma/cma-2/alloc
23 would try to allocate 5 pages from the cma-2 area.
25  - [WO] free: Free N pages from that CMA area, similar to the above.