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Merge pull request #107 from bjackman/cpufreq-expose-tunable-error

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cpufreq: Expose error when writing invalid governor tunable
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setrofim 2017-04-12 15:46:58 +01:00 committed by GitHub
commit f4d3c60137
1 changed files with 6 additions and 2 deletions
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8
devlib/module/cpufreq.py
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@ -152,10 +152,14 @@ class CpufreqModule(Module):
valid_tunables = self.list_governor_tunables(cpu) valid_tunables = self.list_governor_tunables(cpu)
for tunable, value in kwargs.iteritems(): for tunable, value in kwargs.iteritems():
if tunable in valid_tunables: if tunable in valid_tunables:
try:
path = '/sys/devices/system/cpu/{}/cpufreq/{}/{}'.format(cpu, governor, tunable) path = '/sys/devices/system/cpu/{}/cpufreq/{}/{}'.format(cpu, governor, tunable)
try:
self.target.write_value(path, value) self.target.write_value(path, value)
except TargetError: # May be an older kernel except TargetError:
if self.target.file_exists(path):
# File exists but we did something wrong
raise
# Expected file doesn't exist, try older sysfs layout.
path = '/sys/devices/system/cpu/cpufreq/{}/{}'.format(governor, tunable) path = '/sys/devices/system/cpu/cpufreq/{}/{}'.format(governor, tunable)
self.target.write_value(path, value) self.target.write_value(path, value)
else: else: