diff options
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r-- | drivers/cpufreq/cpufreq.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 815902c2c856..a9163d02983a 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c | |||
@@ -823,6 +823,30 @@ static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq, unsigne | |||
823 | 823 | ||
824 | 824 | ||
825 | /** | 825 | /** |
826 | * cpufreq_quick_get - get the CPU frequency (in kHz) frpm policy->cur | ||
827 | * @cpu: CPU number | ||
828 | * | ||
829 | * This is the last known freq, without actually getting it from the driver. | ||
830 | * Return value will be same as what is shown in scaling_cur_freq in sysfs. | ||
831 | */ | ||
832 | unsigned int cpufreq_quick_get(unsigned int cpu) | ||
833 | { | ||
834 | struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); | ||
835 | unsigned int ret = 0; | ||
836 | |||
837 | if (policy) { | ||
838 | down(&policy->lock); | ||
839 | ret = policy->cur; | ||
840 | up(&policy->lock); | ||
841 | cpufreq_cpu_put(policy); | ||
842 | } | ||
843 | |||
844 | return (ret); | ||
845 | } | ||
846 | EXPORT_SYMBOL(cpufreq_quick_get); | ||
847 | |||
848 | |||
849 | /** | ||
826 | * cpufreq_get - get the current CPU frequency (in kHz) | 850 | * cpufreq_get - get the current CPU frequency (in kHz) |
827 | * @cpu: CPU number | 851 | * @cpu: CPU number |
828 | * | 852 | * |