cr2/devfreq_power.py

#    Copyright 2015-2015 ARM Limited
#
# 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
#
# 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.
#


"""Process the output of the devfreq_cooling devices in the current
directory's trace.dat"""

import pandas as pd

from cr2.base import Base
from cr2.run import Run


class DevfreqInPower(Base):
    """Process de devfreq cooling device data regarding get_power in an
ftrace dump"""

    name = "devfreq_in_power"

    def __init__(self):
        super(DevfreqInPower, self).__init__(
            unique_word="thermal_power_devfreq_get_power:",
        )

    def get_all_freqs(self):
        """Return a pandas.DataFrame with the frequencies for the devfreq device

        The format should be the same as the one for
        CpuInPower().get_all_freqs().  Frequencies are in MHz.

        """

        return pd.DataFrame(self.data_frame["freq"] / 1000000)

Run.register_class(DevfreqInPower, "thermal")


class DevfreqOutPower(Base):
    """Process de devfreq cooling device data regarding power2state in an
ftrace dump"""

    name = "devfreq_out_power"

    def __init__(self):
        super(DevfreqOutPower, self).__init__(
            unique_word="thermal_power_devfreq_limit:",
        )

    def get_all_freqs(self):
        """Return a pandas.DataFrame with the output frequencies for the devfreq
device

        The format should be the same that that of
        CpuOutPower().get_all_freqs().  The frequencies are in MHz.

        """

        return pd.DataFrame(self.data_frame["freq"] / 1000000)

Run.register_class(DevfreqOutPower, "thermal")