error

    12-04 14:24:59.156: E/ActivityManager(253): mtprof entry can not found!
    12-04 14:24:59.156: E/ActivityManager(253): java.io.FileNotFoundException:      /proc/mtprof/status: open failed: ENOENT (No such file or directory)
    12-04 14:24:59.156: E/ActivityManager(253): 	at  libcore.io.IoBridge.open(IoBridge.java:448)
    12-04 14:24:59.156: E/ActivityManager(253): 	at java.io.FileInputStream.<init>(FileInputStream.java:78)
    12-04 14:24:59.156: E/ActivityManager(253): 	at java.io.FileInputStream.<init>(FileInputStream.java:105)
    12-04 14:24:59.156: E/ActivityManager(253): 	at com.android.server.am.ActivityRecord.mtProf(ActivityRecord.java:852)
    12-04 14:24:59.156: E/ActivityManager(253): 	at com.android.server.am.ActivityRecord.windowsDrawn(ActivityRecord.java:653)
    12-04 14:24:59.156: E/ActivityManager(253): 	at com.android.server.am.ActivityRecord$Token.windowsDrawn(ActivityRecord.java:225)
    12-04 14:24:59.156: E/ActivityManager(253): 	at com.android.server.wm.WindowManagerService$H.handleMessage(WindowManagerService.java:7046)
    12-04 14:24:59.156: E/ActivityManager(253): 	at android.os.Handler.dispatchMessage(Handler.java:99)
    12-04 14:24:59.156: E/ActivityManager(253): 	at android.os.Looper.loop(Looper.java:154)
    12-04 14:24:59.156: E/ActivityManager(253): 	at com.android.server.wm.WindowManagerService$WMThread.run(WindowManagerService.java:756)
    12-04 14:24:59.156: E/ActivityManager(253): Caused by: libcore.io.ErrnoException: open   failed: ENOENT (No such file or directory)
    12-04 14:24:59.156: E/ActivityManager(253): 	at libcore.io.Posix.open(Native Method)
    12-04 14:24:59.156: E/ActivityManager(253): 	at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
    12-04 14:24:59.156: E/ActivityManager(253): 	at libcore.io.IoBridge.open(IoBridge.java:432)
    12-04 14:24:59.156: E/ActivityManager(253): 	... 9 more