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Subject[PATCH 4/6] cpufreq: Add a get_current_driver helper
Date
From: Borislav Petkov <bp@suse.de>

Add a helper function to return cpufreq_driver->name.

Signed-off-by: Borislav Petkov <bp@suse.de>
---
drivers/cpufreq/cpufreq.c | 14 ++++++++++++++
include/linux/cpufreq.h | 1 +
2 files changed, 15 insertions(+)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 1f93dbd72355..6ed3c1377caf 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1386,6 +1386,20 @@ 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 a55b88eaf96a..a018da2d2a7c 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -407,4 +407,5 @@ void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table,
unsigned int cpu);

void cpufreq_frequency_table_put_attr(unsigned int cpu);
+extern const char *cpufreq_get_current_driver(void);
#endif /* _LINUX_CPUFREQ_H */
--
1.8.1.rc3


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