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cpufreq: add missing get_driver() method

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Add a method to read the name of the driver for cpufreq policy for a
cpu.
This commit is contained in:
sergei Trofimov
2018-04-30 15:40:15 +01:00
committed by setrofim
parent 1e839028a1
commit 7e39ecf142
1 changed files with 12 additions and 0 deletions
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12
devlib/module/cpufreq.py
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@@ -442,6 +442,18 @@ class CpufreqModule(Module):
return [int(c) for c in self.target.read_value(sysfile).split()]
@memoized
def get_driver(self, cpu):
"""
Get the name of the driver used by this cpufreq policy.
"""
if isinstance(cpu, int):
cpu = 'cpu{}'.format(cpu)
sysfile = '/sys/devices/system/cpu/{}/cpufreq/scaling_driver'.format(cpu)
return self.target.read_value(sysfile).strip()
def iter_domains(self):
"""
Iterate over the frequency domains in the system