lkml.org 
[lkml]   [2013]   [Jul]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH RFC 1/3] Add interface to receive current cpu power
Date
Signed-off-by: Konstantin Krivyakin <k.krivyakin@samsung.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


\
 
 \ /
  Last update: 2013-07-30 11:01    [W:0.040 / U:1.828 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site