lkml.org 
[lkml]   [2013]   [Feb]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/6] cpufreq: Retrieve current frequency from scaling drivers with internal governors
Date
From: Dirk Brandewie <dirk.j.brandewie@intel.com>

Scaling drivers that implement the cpufreq_driver.setpolicy() versus
the cpufreq_driver.target() interface do not set policy->cur.

Normally policy->cur is set during the call to cpufreq_driver.target()
when the frequnecy request is made by the governor.

If the scaling driver implements cpufreq_driver.setpolicy() and
cpufreq_driver.get() interfaces use cpufreq_driver.get() to retrieve
the current frequency.

Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
---
drivers/cpufreq/cpufreq.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 1f93dbd..1c037f0 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1219,6 +1219,9 @@ unsigned int cpufreq_quick_get(unsigned int cpu)
struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
unsigned int ret_freq = 0;

+ if (cpufreq_driver && cpufreq_driver->setpolicy && cpufreq_driver->get)
+ return cpufreq_driver->get(cpu);
+
if (policy) {
ret_freq = policy->cur;
cpufreq_cpu_put(policy);
--
1.7.7.6


\
 
 \ /
  Last update: 2013-02-01 20:22    [W:1.148 / U:0.016 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site