diff options
| -rw-r--r-- | core/java/android/app/IActivityManager.aidl | 1 | ||||
| -rw-r--r-- | services/core/java/com/android/server/am/ActivityManagerService.java | 47 |
2 files changed, 0 insertions, 48 deletions
diff --git a/core/java/android/app/IActivityManager.aidl b/core/java/android/app/IActivityManager.aidl index cd9e02d30d05..f6401198158a 100644 --- a/core/java/android/app/IActivityManager.aidl +++ b/core/java/android/app/IActivityManager.aidl @@ -99,7 +99,6 @@ interface IActivityManager { void unregisterUidObserver(in IUidObserver observer); boolean isUidActive(int uid, String callingPackage); int getUidProcessState(int uid, in String callingPackage); - boolean setSchedPolicyCgroup(int tid, int group); // =============== End of transactions used on native side as well ============================ // Special low-level communication with activity manager. diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java index a5d2011483bc..2746c2c86159 100644 --- a/services/core/java/com/android/server/am/ActivityManagerService.java +++ b/services/core/java/com/android/server/am/ActivityManagerService.java @@ -7300,53 +7300,6 @@ public class ActivityManagerService extends IActivityManager.Stub return uidRecord != null && !uidRecord.setIdle; } - /** - * Change the sched policy cgroup of a thread. - * - * <p>It is intended to be used in jni call of {@link Process#setThreadPriority(int, int)}. - * When a process is changing the priority of its threads, the sched policy of that - * thread may need to be changed accordingly - if the priority is changed to below - * or equal to {@link android.os.Process#THREAD_PRIORITY_BACKGROUND} or raising from it. - * However, because of the limitation of sepolicy, the thread priority change will - * fail for some processes. To solve it, we add this binder call in Activity Manager, - * so that the jni call of {@link Process#setThreadPriority(int, int)} could use it. - * - * @param tid tid of the thread to be changed. - * @param group The sched policy group to be changed to. - * - * @throws IllegalArgumentException if group is invalid. - * @throws SecurityException if no permission. - * - * @return Returns {@code true} if the sched policy is changed successfully; - * {@code false} otherwise. - */ - @Override - public boolean setSchedPolicyCgroup(final int tid, final int group) { - final int pid = Binder.getCallingPid(); - final int tgid = Process.getThreadGroupLeader(tid); - final int pgroup = Process.getProcessGroup(pid); - - // tid is not in the thread group of caller - if (pid != tgid) { - return false; - } - - // sched group is higher than its main process - if (group > pgroup) { - return false; - } - - try { - Process.setThreadGroup(tid, group); - return true; - } catch (IllegalArgumentException e) { - Slog.w(TAG, "Failed to set thread group, argument invalid:\n" + e); - } catch (SecurityException e) { - Slog.w(TAG, "Failed to set thread group, no permission:\n" + e); - } - return false; - } - @Override public void setPersistentVrThread(int tid) { mActivityTaskManager.setPersistentVrThread(tid); |