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cpufreq: Add a get_current_driver helper

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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>
This commit is contained in:
Borislav Petkov 2013-01-20 10:24:28 +00:00 committed by Rafael J. Wysocki
parent 741220ea86
commit 9d95046e5d
2 changed files with 15 additions and 0 deletions
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14
drivers/cpufreq/cpufreq.c
View File

@ -1395,6 +1395,20 @@ static struct syscore_ops cpufreq_syscore_ops = {
.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 *

1
include/linux/cpufreq.h
View File

@ -411,4 +411,5 @@ void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table,
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 */