Revert "Set max number of sessions to 20 for non-system process"

This reverts commit 883ee642.

Reason for revert: b/296971803

Change-Id: Ia35e165d2aabba382b9a4e1757d8fc3c02d842e6

native/android/performance_hint.cpp

@@ -144,8 +144,6 @@ APerformanceHintSession* APerformanceHintManager::createSession(
     binder::Status ret =
             mHintManager->createHintSession(mToken, tids, initialTargetWorkDurationNanos, &session);
     if (!ret.isOk() || !session) {
-        ALOGE("%s: PerformanceHint cannot create hint session. %s", __FUNCTION__,
-              ret.exceptionMessage().c_str());
         return nullptr;
     }
     return new APerformanceHintSession(mHintManager, std::move(session), mPreferredRateNanos,

services/core/java/com/android/server/power/hint/HintManagerService.java

@@ -56,7 +56,6 @@ import java.util.Objects;
 public final class HintManagerService extends SystemService {
     private static final String TAG = "HintManagerService";
     private static final boolean DEBUG = false;
-    private static final int MAX_HINT_SESSION_COUNT_PER_UID = 20;
     @VisibleForTesting final long mHintSessionPreferredRate;
 
     // Multi-level map storing all active AppHintSessions.
@@ -368,23 +367,6 @@ public final class HintManagerService extends SystemService {
                     + " not be empty.");
 
             final int callingUid = Binder.getCallingUid();
-            if (callingUid != Process.SYSTEM_UID) {
-                int sessionCount = 0;
-                synchronized (mLock) {
-                    ArrayMap<IBinder, ArraySet<AppHintSession>> tokenMap =
-                            mActiveSessions.get(callingUid);
-                    if (tokenMap != null) {
-                        for (ArraySet<AppHintSession> arr : tokenMap.values()) {
-                            sessionCount += arr.size();
-                        }
-                    }
-                }
-                if (sessionCount >= MAX_HINT_SESSION_COUNT_PER_UID) {
-                    throw new IllegalStateException(
-                            "Max session count limit reached: " + sessionCount);
-                }
-            }
-
             final int callingTgid = Process.getThreadGroupLeader(Binder.getCallingPid());
             final long identity = Binder.clearCallingIdentity();
             try {

services/tests/servicestests/src/com/android/server/power/hint/HintManagerServiceTest.java

@@ -148,32 +148,6 @@ public class HintManagerServiceTest {
         assertNotNull(c);
     }
 
-    @Test
-    public void testCreateHintSession_exceedsLimit() throws Exception {
-        HintManagerService service = createService();
-        IBinder token1 = new Binder();
-        IBinder token2 = new Binder();
-
-        for (int i = 0; i < 10; i++) {
-            IHintSession a = service.getBinderServiceInstance().createHintSession(token1,
-                    SESSION_TIDS_A, DEFAULT_TARGET_DURATION);
-            assertNotNull(a);
-        }
-
-        for (int i = 0; i < 10; i++) {
-            IHintSession b = service.getBinderServiceInstance().createHintSession(token2,
-                    SESSION_TIDS_B, DEFAULT_TARGET_DURATION);
-            assertNotNull(b);
-        }
-
-        assertThrows(IllegalStateException.class,
-                () -> service.getBinderServiceInstance().createHintSession(token1, SESSION_TIDS_A,
-                        DEFAULT_TARGET_DURATION));
-        assertThrows(IllegalStateException.class,
-                () -> service.getBinderServiceInstance().createHintSession(token2, SESSION_TIDS_B,
-                        DEFAULT_TARGET_DURATION));
-    }
-
     @Test
     public void testPauseResumeHintSession() throws Exception {
         HintManagerService service = createService();