linux-kernel - Re: [PATCH] cpufreq: governor: Be friendly towards latency-sensitive bursty workloads

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Message-ID: <538DA06A.2000103@linux.vnet.ibm.com>
Date:	Tue, 03 Jun 2014 15:46:10 +0530
From:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
To:	Viresh Kumar <viresh.kumar@...aro.org>
CC:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	"ego@...ux.vnet.ibm.com" <ego@...ux.vnet.ibm.com>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] cpufreq: governor: Be friendly towards latency-sensitive
 bursty workloads

On 06/03/2014 03:46 PM, Viresh Kumar wrote:
> On 3 June 2014 15:43, Srivatsa S. Bhat <srivatsa.bhat@...ux.vnet.ibm.com> wrote:
>> diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
>> index e1c6433..2597bbe 100644
>> --- a/drivers/cpufreq/cpufreq_governor.c
>> +++ b/drivers/cpufreq/cpufreq_governor.c
>> @@ -36,14 +36,29 @@ void dbs_check_cpu(struct dbs_data *dbs_data, int cpu)
>>         struct od_dbs_tuners *od_tuners = dbs_data->tuners;
>>         struct cs_dbs_tuners *cs_tuners = dbs_data->tuners;
>>         struct cpufreq_policy *policy;
>> +       unsigned int sampling_rate;
>>         unsigned int max_load = 0;
>>         unsigned int ignore_nice;
>>         unsigned int j;
[...]
>> diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h
>> index bfb9ae1..b56552b 100644
>> --- a/drivers/cpufreq/cpufreq_governor.h
>> +++ b/drivers/cpufreq/cpufreq_governor.h
>> @@ -134,6 +134,7 @@ struct cpu_dbs_common_info {
>>         u64 prev_cpu_idle;
>>         u64 prev_cpu_wall;
>>         u64 prev_cpu_nice;
>> +       unsigned int prev_load;
>>         struct cpufreq_policy *cur_policy;
>>         struct delayed_work work;
>>         /*
> 
> Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
> 

Thanks a lot!
 
Regards,
Srivatsa S. Bhat

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