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utils/power: handle devlib frequency reporting

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When collecting ftrace events, the instrument will insert frequencies
into the trace to make it possible reconstruct power states when there
were no frequency transitions during the measured period.

The format in which frequencies are inserted is different in devlib.
Since post-processing scripts may be run on traces collected by devlib
as well as WA, it needs to support both formats.
This commit is contained in:
Sergei Trofimov 2016-11-29 10:15:40 +00:00
parent 7bf0e3c344
commit 5db11462be
1 changed files with 5 additions and 1 deletions
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6
wlauto/utils/power.py
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@ -32,6 +32,7 @@ logger = logging.getLogger('power')
UNKNOWN_FREQUENCY = -1
INIT_CPU_FREQ_REGEX = re.compile(r'CPU (?P<cpu>\d+) FREQUENCY: (?P<freq>\d+) kHZ')
DEVLIB_CPU_FREQ_REGEX = re.compile(r'cpu_frequency(?:_devlib):\s+state=(?P<freq>\d+)\s+cpu_id=(?P<cpu>\d+)')
class CorePowerTransitionEvent(object):
@ -311,7 +312,10 @@ def stream_cpu_power_transitions(events):
elif TRACE_MARKER_STOP in event.text:
yield TraceMarkerEvent('STOP')
else:
match = INIT_CPU_FREQ_REGEX.search(event.text)
if 'cpu_frequency' in event.text:
match = DEVLIB_CPU_FREQ_REGEX.search(event.text)
else:
match = INIT_CPU_FREQ_REGEX.search(event.text)
if match:
yield CorePowerTransitionEvent(event.timestamp,
int(match.group('cpu')),