cpufreq: Add a get_current_driver helper
Add a helper function to return cpufreq_driver->name.
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 2417576..216c104 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1395,6 +1395,20 @@
.resume = cpufreq_bp_resume,
};
+/**
+ * cpufreq_get_current_driver - return current driver's name
+ *
+ * Return the name string of the currently loaded cpufreq driver
+ * or NULL, if none.
+ */
+const char *cpufreq_get_current_driver(void)
+{
+ if (cpufreq_driver)
+ return cpufreq_driver->name;
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(cpufreq_get_current_driver);
/*********************************************************************
* NOTIFIER LISTS INTERFACE *
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 52be2d0..1f3a726 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -411,4 +411,5 @@
void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy);
void cpufreq_frequency_table_put_attr(unsigned int cpu);
+const char *cpufreq_get_current_driver(void);
#endif /* _LINUX_CPUFREQ_H */