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| author | Borislav Petkov <bp@suse.de> | 2013-01-20 10:24:28 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-02-02 00:01:15 +0100 |
| commit | 9d95046e5d6afd6d7ae86fb71ab59c6faf0db8de (patch) | |
| tree | f5f4314238fbc548ec9e3ab48affeeb8682577c8 | |
| parent | 741220ea86709717e1d392b5a9617dfe90cd3802 (diff) | |
| download | lwn-9d95046e5d6afd6d7ae86fb71ab59c6faf0db8de.tar.gz lwn-9d95046e5d6afd6d7ae86fb71ab59c6faf0db8de.zip | |
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>
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 14 | ||||
| -rw-r--r-- | include/linux/cpufreq.h | 1 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 2417576393a6..216c104d51ad 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -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 * diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 52be2d0c994a..1f3a726640e8 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -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 */ |