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plugin_cpu: skip offline CPUs

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Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com>
This commit is contained in:
Jaroslav Škarvada 2015-05-28 18:44:00 +02:00
parent fb96ce1d44
commit 516dc1c168
1 changed files with 18 additions and 1 deletions
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19
tuned/plugins/plugin_cpu.py
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@ -73,6 +73,11 @@ class CPULatencyPlugin(base.Plugin):
if self._has_intel_pstate:
log.info("intel_pstate detected")
def _is_cpu_online(self, device):
sd = str(device)
# CPU0 is always online
return sd == "cpu0" or self._cmd.read_file("/sys/devices/system/cpu/%s/online" % sd).strip() == "1"
def _instance_init(self, instance):
instance._has_static_tuning = True
instance._has_dynamic_tuning = False
@ -171,6 +176,9 @@ class CPULatencyPlugin(base.Plugin):
@command_set("governor", per_device=True)
def _set_governor(self, governor, device, sim):
if not self._is_cpu_online(device):
log.debug("%s is not online, skipping" % device)
return None
if governor not in self._get_available_governors(device):
if not sim:
log.info("ignoring governor '%s' on cpu '%s', it is not supported" % (governor, device))
@ -187,6 +195,9 @@ class CPULatencyPlugin(base.Plugin):
@command_get("governor")
def _get_governor(self, device):
governor = None
if not self._is_cpu_online(device):
log.debug("%s is not online, skipping" % device)
return None
if self._has_cpupower:
cpu_id = device.lstrip("cpu")
retcode, lines = self._cmd.execute(["cpupower", "-c", cpu_id, "frequency-info", "-p"])
@ -211,9 +222,12 @@ class CPULatencyPlugin(base.Plugin):
@command_set("energy_perf_bias", per_device=True)
def _set_energy_perf_bias(self, energy_perf_bias, device, sim):
if not self._is_cpu_online(device):
log.debug("%s is not online, skipping" % device)
return None
if self._has_energy_perf_bias:
cpu_id = device.lstrip("cpu")
if not sim:
cpu_id = device.lstrip("cpu")
log.info("setting energy_perf_bias '%s' on cpu '%s'" % (energy_perf_bias, device))
self._cmd.execute(["x86_energy_perf_policy", "-c", cpu_id, str(energy_perf_bias)])
return str(energy_perf_bias)
@ -236,6 +250,9 @@ class CPULatencyPlugin(base.Plugin):
@command_get("energy_perf_bias")
def _get_energy_perf_bias(self, device):
energy_perf_bias = None
if not self._is_cpu_online(device):
log.debug("%s is not online, skipping" % device)
return None
if self._has_energy_perf_bias:
cpu_id = device.lstrip("cpu")
retcode, lines = self._cmd.execute(["x86_energy_perf_policy", "-c", cpu_id, "-r"])