From 4dcb4974e5cc1700bd1e410d85b85beff1ebe3dd Mon Sep 17 00:00:00 2001
From: Patrick Bellasi <patrick.bellasi@arm.com>
Date: Wed, 16 Sep 2015 18:03:04 +0100
Subject: [PATCH] cpufreq: add methods to set the governor for a specified set
of CPUs
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>
---
devlib/module/cpufreq.py | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/devlib/module/cpufreq.py b/devlib/module/cpufreq.py
index a41cff2..37c49dc 100644
--- a/devlib/module/cpufreq.py
+++ b/devlib/module/cpufreq.py
@@ -326,3 +326,26 @@ class CpufreqModule(Module):
self.target.write_value(sysfile, value)
except ValueError:
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)
+