diff --git a/system/core/libcutils/sched_policy.c b/system/core/libcutils/sched_policy.c
index 493511e57f..c208f5a5ab 100644
--- a/system/core/libcutils/sched_policy.c
+++ b/system/core/libcutils/sched_policy.c
@@ -1,16 +1,16 @@
 /*
 ** Copyright 2007, The Android Open Source Project
 **
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
 **
-**     http://www.apache.org/licenses/LICENSE-2.0 
+**     http://www.apache.org/licenses/LICENSE-2.0
 **
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
 ** limitations under the License.
 */
 
@@ -64,6 +64,12 @@ static int add_tid_to_cgroup(int tid, SchedPolicy policy)
 {
     int fd;
 
+    SchedPolicy tmp_policy;
+    get_sched_policy(tid,&tmp_policy);
+    if (tmp_policy == policy) {
+        return 0;
+    }
+
     switch (policy) {
     case SP_BACKGROUND:
         fd = bg_cgroup_fd;