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Merge pull request #62 from bjackman/check-governor-supported

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cpufreq: Improve error when setting all CPUs to unsupported governor
This commit is contained in:
setrofim 2016-10-11 14:36:12 +01:00 committed by GitHub
commit 25818b035e
1 changed files with 10 additions and 1 deletions
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11
devlib/module/cpufreq.py
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@ -375,9 +375,18 @@ class CpufreqModule(Module):
"""
Set the specified governor for all the (online) CPUs
"""
return self.target._execute_util(
try:
return self.target._execute_util(
'cpufreq_set_all_governors {}'.format(governor),
as_root=True)
except TargetError as e:
if "echo: I/O error" in str(e):
cpus_unsupported = [c for c in self.target.list_online_cpus()
if governor not in self.list_governors(c)]
raise TargetError("Governor {} unsupported for CPUs {}".format(
governor, cpus_unsupported))
else:
raise
def get_all_governors(self):
"""