Activity Manager changes the scheduling group of processes.

The algorithm for this is currently very simple: all persistent processes are
always in the normal scheduling group, all other processes are normal if their
oom_adj is as good or better than VISIBLE, otherwise they are in the background
group.

Note that this currently results in a fair number of log messages about not
being able to change the group, since the system process does not have
permission to do so.  Once a kernel fix is in, these will go away and the code
will start working.

1 files changed, 3 insertions, 1 deletions

diff --git a/core/java/android/app/IApplicationThread.java b/core/java/android/app/IApplicationThread.java
index 9f3534b0924a..ec03d3a1f1f5 100644
--- a/core/java/android/app/IApplicationThread.java
+++ b/core/java/android/app/IApplicationThread.java
@@ -87,7 +87,8 @@ public interface IApplicationThread extends IInterface {
     void scheduleActivityConfigurationChanged(IBinder token) throws RemoteException;
     void requestPss() throws RemoteException;
     void profilerControl(boolean start, String path) throws RemoteException;
-
+    void setSchedulingGroup(int group) throws RemoteException;
+    
     String descriptor = "android.app.IApplicationThread";
 
     int SCHEDULE_PAUSE_ACTIVITY_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION;
@@ -117,4 +118,5 @@ public interface IApplicationThread extends IInterface {
     int SCHEDULE_RELAUNCH_ACTIVITY_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+25;
     int REQUEST_PSS_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+26;
     int PROFILER_CONTROL_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+27;
+    int SET_SCHEDULING_GROUP_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION+28;
 }