diff --git a/libcutils/include/cutils/sched_policy.h b/libcutils/include/cutils/sched_policy.h
index 4c1113be3..cf91b76f4 100644
--- a/libcutils/include/cutils/sched_policy.h
+++ b/libcutils/include/cutils/sched_policy.h
@@ -40,16 +40,17 @@ extern bool schedboost_enabled();
 
 /* Keep in sync with THREAD_GROUP_* in frameworks/base/core/java/android/os/Process.java */
 typedef enum {
-    SP_DEFAULT    = -1,
+    SP_DEFAULT = -1,
     SP_BACKGROUND = 0,
     SP_FOREGROUND = 1,
-    SP_SYSTEM     = 2,  // can't be used with set_sched_policy()
-    SP_AUDIO_APP  = 3,
-    SP_AUDIO_SYS  = 4,
-    SP_TOP_APP    = 5,
-    SP_RT_APP     = 6,
+    SP_SYSTEM = 2,  // can't be used with set_sched_policy()
+    SP_AUDIO_APP = 3,
+    SP_AUDIO_SYS = 4,
+    SP_TOP_APP = 5,
+    SP_RT_APP = 6,
+    SP_RESTRICTED = 7,
     SP_CNT,
-    SP_MAX        = SP_CNT - 1,
+    SP_MAX = SP_CNT - 1,
     SP_SYSTEM_DEFAULT = SP_FOREGROUND,
 } SchedPolicy;
 
diff --git a/libcutils/sched_policy.cpp b/libcutils/sched_policy.cpp
index f5ce82fea..f72ec52d6 100644
--- a/libcutils/sched_policy.cpp
+++ b/libcutils/sched_policy.cpp
@@ -57,6 +57,7 @@ static int system_bg_cpuset_fd = -1;
 static int bg_cpuset_fd = -1;
 static int fg_cpuset_fd = -1;
 static int ta_cpuset_fd = -1; // special cpuset for top app
+static int rs_cpuset_fd = -1;  // special cpuset for screen off restrictions
 
 // File descriptors open to /dev/stune/../tasks, setup by initialize, or -1 on error
 static int bg_schedboost_fd = -1;
@@ -151,6 +152,8 @@ static void __initialize() {
             system_bg_cpuset_fd = open(filename, O_WRONLY | O_CLOEXEC);
             filename = "/dev/cpuset/top-app/tasks";
             ta_cpuset_fd = open(filename, O_WRONLY | O_CLOEXEC);
+            filename = "/dev/cpuset/restricted/tasks";
+            rs_cpuset_fd = open(filename, O_WRONLY | O_CLOEXEC);
 
             if (schedboost_enabled()) {
                 filename = "/dev/stune/top-app/tasks";
@@ -308,6 +311,9 @@ int set_cpuset_policy(int tid, SchedPolicy policy)
     case SP_SYSTEM:
         fd = system_bg_cpuset_fd;
         break;
+    case SP_RESTRICTED:
+        fd = rs_cpuset_fd;
+        break;
     default:
         boost_fd = fd = -1;
         break;
@@ -457,14 +463,10 @@ int get_sched_policy(int /*tid*/, SchedPolicy* policy) {
 const char *get_sched_policy_name(SchedPolicy policy)
 {
     policy = _policy(policy);
-    static const char * const strings[SP_CNT] = {
-       [SP_BACKGROUND] = "bg",
-       [SP_FOREGROUND] = "fg",
-       [SP_SYSTEM]     = "  ",
-       [SP_AUDIO_APP]  = "aa",
-       [SP_AUDIO_SYS]  = "as",
-       [SP_TOP_APP]    = "ta",
-       [SP_RT_APP]    = "rt",
+    static const char* const strings[SP_CNT] = {
+            [SP_BACKGROUND] = "bg", [SP_FOREGROUND] = "fg", [SP_SYSTEM] = "  ",
+            [SP_AUDIO_APP] = "aa",  [SP_AUDIO_SYS] = "as",  [SP_TOP_APP] = "ta",
+            [SP_RT_APP] = "rt",     [SP_RESTRICTED] = "rs",
     };
     if ((policy < SP_CNT) && (strings[policy] != NULL))
         return strings[policy];
diff --git a/rootdir/init.rc b/rootdir/init.rc
index d75b9efbd..5b06fdb19 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -176,6 +176,12 @@ on init
     copy /dev/cpuset/cpus /dev/cpuset/system-background/cpus
     copy /dev/cpuset/mems /dev/cpuset/system-background/mems
 
+    # restricted is for system tasks that are being throttled
+    # due to screen off.
+    mkdir /dev/cpuset/restricted
+    copy /dev/cpuset/cpus /dev/cpuset/restricted/cpus
+    copy /dev/cpuset/mems /dev/cpuset/restricted/mems
+
     mkdir /dev/cpuset/top-app
     copy /dev/cpuset/cpus /dev/cpuset/top-app/cpus
     copy /dev/cpuset/mems /dev/cpuset/top-app/mems
@@ -186,11 +192,13 @@ on init
     chown system system /dev/cpuset/background
     chown system system /dev/cpuset/system-background
     chown system system /dev/cpuset/top-app
+    chown system system /dev/cpuset/restricted
     chown system system /dev/cpuset/tasks
     chown system system /dev/cpuset/foreground/tasks
     chown system system /dev/cpuset/background/tasks
     chown system system /dev/cpuset/system-background/tasks
     chown system system /dev/cpuset/top-app/tasks
+    chown system system /dev/cpuset/restricted/tasks
 
     # set system-background to 0775 so SurfaceFlinger can touch it
     chmod 0775 /dev/cpuset/system-background
@@ -199,6 +207,7 @@ on init
     chmod 0664 /dev/cpuset/background/tasks
     chmod 0664 /dev/cpuset/system-background/tasks
     chmod 0664 /dev/cpuset/top-app/tasks
+    chmod 0664 /dev/cpuset/restricted/tasks
     chmod 0664 /dev/cpuset/tasks