| Index: build/android/pylib/perf/perf_control.py
 | 
| diff --git a/build/android/pylib/perf/perf_control.py b/build/android/pylib/perf/perf_control.py
 | 
| index 6a636e7f37cb018b6cdd773f9b4618c9bb60da40..0b32dd8089560583df8563e796fa79c31b3430ec 100644
 | 
| --- a/build/android/pylib/perf/perf_control.py
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| +++ b/build/android/pylib/perf/perf_control.py
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| @@ -90,7 +90,7 @@ class PerfControl(object):
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|      """
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|      if self._have_mpdecision:
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|        script = 'stop mpdecision' if force_online else 'start mpdecision'
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| -      self._device.RunShellCommand(script, root=True)
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| +      self._device.RunShellCommand(script, as_root=True)
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|  
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|      if not self._have_mpdecision and not self._AllCpusAreOnline():
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|        logging.warning('Unexpected cpu hot plugging detected.')
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| 
 |