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 /** + * cpufreq_quick_get - get the CPU frequency (in kHz) frpm policy->cur + * @cpu: CPU number + * + * This is the last known freq, without actually getting it from the driver. + * Return value will be same as what is shown in scaling_cur_freq in sysfs. + */ +unsigned int cpufreq_quick_get(unsigned int cpu) +{ + struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); + unsigned int ret = 0; + + if (policy) { + down(&policy->lock); + ret = policy->cur; + up(&policy->lock); + cpufreq_cpu_put(policy); + } + + return (ret); +} +EXPORT_SYMBOL(cpufreq_quick_get); + + +/** * cpufreq_get - get the current CPU frequency (in kHz) * @cpu: CPU number * |