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Date: Tue, 30 Jul 2013 12:17:37 +0400 From: Konstantin Krivyakin <k.krivyakin@...sung.com> To: linux-kernel@...r.kernel.org, rjw@...k.pl, viresh.kumar@...aro.org, mingo@...hat.com, peterz@...radead.org, kgene.kim@...sung.com, linux-pm@...r.kernel.org Cc: k.krivyakin@...sung.com, i.zhbanov@...sung.com, e.voevodin@...sung.com, kyungmin.park@...sung.com, akpm@...ux-foundation.org Subject: [PATCH RFC 1/3] Add interface to receive current cpu power Signed-off-by: Konstantin Krivyakin <k.krivyakin@...sung.com> --- drivers/cpufreq/cpufreq.c | 17 +++++++++++++++++ include/linux/cpufreq.h | 6 ++++++ 2 files changed, 23 insertions(+) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 6a015ad..4180e89 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1538,6 +1538,23 @@ int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list) } EXPORT_SYMBOL(cpufreq_unregister_notifier); +/** + * cpu_power_get - get current CPU power + * @cpu: CPU number + */ +u64 cpu_power_get(int cpu) +{ + struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); + u64 ret_power = 0; + + if (policy) { + ret_power = policy->current_power; + cpufreq_cpu_put(policy); + } + + return ret_power; +} +EXPORT_SYMBOL(cpu_power_get); /********************************************************************* * GOVERNORS * diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 4d7390b..67323af 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -107,6 +107,7 @@ struct cpufreq_policy { unsigned int max; /* in kHz */ unsigned int cur; /* in kHz, only needed if cpufreq * governors are used */ + u64 current_power; unsigned int policy; /* see above */ struct cpufreq_governor *governor; /* see below */ void *governor_data; @@ -365,6 +366,7 @@ static inline unsigned int cpufreq_get(unsigned int cpu) #ifdef CONFIG_CPU_FREQ unsigned int cpufreq_quick_get(unsigned int cpu); unsigned int cpufreq_quick_get_max(unsigned int cpu); +u64 cpu_power_get(int cpu); #else static inline unsigned int cpufreq_quick_get(unsigned int cpu) { @@ -374,6 +376,10 @@ static inline unsigned int cpufreq_quick_get_max(unsigned int cpu) { return 0; } +static inline u64 cpu_power_get(unsigned int cpu) +{ + return 0; +} #endif /********************************************************************* -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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