1 /*
2  * Copyright (C) 2024 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.os;
18 
19 /**
20  * Binder interface of mmd.
21  *
22  * IMmd is oneway asynchronous API. mmd uses any information passed from outside (e.g.
23  * system_server) as hints. Hint producers don't need to wait until mmd consumes the hists.
24  */
25 oneway interface IMmd {
26     /**
27      * mmd starts zram maintenance operation (e.g. zram writeback, zram recompression) if
28      * applicable.
29      *
30      * mmd expects this Binder is called on a good timing to execute the maintenance (e.g. while the
31      * system is idle).
32      */
doZramMaintenance()33     void doZramMaintenance();
34 }
35