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cpufreq: add methods to set the governor for a specified set of CPUs

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Sometimes it could be required to change the governor for a set of different
CPUs. This patch provides an utility method to easily and achieve that with
a single method call.

Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
This commit is contained in:
Patrick Bellasi 2015-09-16 18:03:04 +01:00
parent db14589886
commit 4dcb4974e5
1 changed files with 23 additions and 0 deletions
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23
devlib/module/cpufreq.py
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@ -326,3 +326,26 @@ class CpufreqModule(Module):
self.target.write_value(sysfile, value) self.target.write_value(sysfile, value)
except ValueError: except ValueError:
raise ValueError('Frequency must be an integer; got: "{}"'.format(frequency)) raise ValueError('Frequency must be an integer; got: "{}"'.format(frequency))
def set_governor_for_cpus(self, cpus, governor, **kwargs):
"""
Set the governor for the specified list of CPUs.
See https://www.kernel.org/doc/Documentation/cpu-freq/governors.txt
:param cpus: The list of CPU for which the governor is to be set.
"""
online_cpus = self.target.list_online_cpus()
for cpu in online_cpus:
self.set_governor(cpu, governor, kwargs)
def set_frequency_for_cpus(self, cpus, freq, exact=False):
"""
Set the frequency for the specified list of CPUs.
See https://www.kernel.org/doc/Documentation/cpu-freq/governors.txt
:param cpus: The list of CPU for which the frequency has to be set.
"""
online_cpus = self.target.list_online_cpus()
for cpu in online_cpus:
self.set_frequency(cpu, freq, exact)