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Re: [PATCH 6/12] cpufreq: governor: Fix CPU load information updates via ->store

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On Thu, Feb 18, 2016 at 6:44 AM, Viresh Kumar <viresh.kumar@linaro.org> wrote:
> On 18-02-16, 02:26, Rafael J. Wysocki wrote:
>> Index: linux-pm/drivers/cpufreq/cpufreq_ondemand.c
>> ===================================================================
>> --- linux-pm.orig/drivers/cpufreq/cpufreq_ondemand.c
>> +++ linux-pm/drivers/cpufreq/cpufreq_ondemand.c
>> @@ -29,6 +29,7 @@
>>
>>  static DEFINE_PER_CPU(struct od_cpu_dbs_info_s, od_cpu_dbs_info);
>>
>> +static struct dbs_governor od_dbs_gov;
>>  static struct od_ops od_ops;
>>
>>  static unsigned int default_powersave_bias;
>> @@ -222,7 +223,6 @@ static ssize_t store_io_is_busy(struct d
>>  {
>>       unsigned int input;
>>       int ret;
>> -     unsigned int j;
>>
>>       ret = sscanf(buf, "%u", &input);
>>       if (ret != 1)
>> @@ -230,12 +230,8 @@ static ssize_t store_io_is_busy(struct d
>>       dbs_data->io_is_busy = !!input;
>>
>>       /* we need to re-evaluate prev_cpu_idle */
>> -     for_each_online_cpu(j) {
>> -             struct od_cpu_dbs_info_s *dbs_info = &per_cpu(od_cpu_dbs_info,
>> -                                                                     j);
>> -             dbs_info->cdbs.prev_cpu_idle = get_cpu_idle_time(j,
>> -                     &dbs_info->cdbs.prev_cpu_wall, dbs_data->io_is_busy);
>> -     }
>
> We weren't doing ignore_nice_load check here, but will be done after
> this patch. Will that make a different?

Yes, IMO failing to update prev_cpu_nice if ignore_nice_load is set is
at least inconsistent with the other updates.

> And then this should be mentioned in the log as well ?

OK, I'll update the changelog to mention that.

> Apart from that.
>
> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>

Thanks!

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[PATCH 0/12] cpufreq: More governor code reorganization "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-02-18 02:40 +0100
  [PATCH 11/12] cpufreq: governor: Make dbs_data_mutex static "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-02-18 02:50 +0100
    Re: [PATCH 11/12] cpufreq: governor: Make dbs_data_mutex static Viresh Kumar <viresh.kumar@linaro.org> - 2016-02-18 07:10 +0100
  [PATCH 4/12] cpufreq: governor: Drop unused governor callback and data fields "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-02-18 02:50 +0100
    Re: [PATCH 4/12] cpufreq: governor: Drop unused governor callback  and data fields Viresh Kumar <viresh.kumar@linaro.org> - 2016-02-18 06:40 +0100
  [PATCH 5/12] cpufreq: ondemand: Drop one more callback from struct od_ops "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-02-18 02:50 +0100
    Re: [PATCH 5/12] cpufreq: ondemand: Drop one more callback from  struct od_ops Viresh Kumar <viresh.kumar@linaro.org> - 2016-02-18 06:40 +0100
  [PATCH 8/12] cpufreq: governor: Make governor private data per-policy "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-02-18 02:50 +0100
    Re: [PATCH 8/12] cpufreq: governor: Make governor private data  per-policy Viresh Kumar <viresh.kumar@linaro.org> - 2016-02-18 07:10 +0100
      [PATCH v2 8/12] cpufreq: governor: Make governor private data per-policy "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-02-18 19:00 +0100
        Re: [PATCH v2 8/12] cpufreq: governor: Make governor private data  per-policy Viresh Kumar <viresh.kumar@linaro.org> - 2016-02-19 03:40 +0100
  [PATCH 6/12] cpufreq: governor: Fix CPU load information updates via ->store "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-02-18 02:50 +0100
    Re: [PATCH 6/12] cpufreq: governor: Fix CPU load information updates  via ->store Viresh Kumar <viresh.kumar@linaro.org> - 2016-02-18 06:50 +0100
      Re: [PATCH 6/12] cpufreq: governor: Fix CPU load information updates  via ->store "Rafael J. Wysocki" <rafael@kernel.org> - 2016-02-18 18:40 +0100
  [PATCH 7/12] cpufreq: ondemand: Rework the handling of powersave bias updates "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-02-18 02:50 +0100
    Re: [PATCH 7/12] cpufreq: ondemand: Rework the handling of powersave  bias updates Viresh Kumar <viresh.kumar@linaro.org> - 2016-02-18 07:00 +0100
  [PATCH 12/12] cpufreq: governor: Narrow down the dbs_data_mutex coverage "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-02-18 02:50 +0100
    Re: [PATCH 12/12] cpufreq: governor: Narrow down the dbs_data_mutex  coverage Viresh Kumar <viresh.kumar@linaro.org> - 2016-02-18 07:30 +0100
      Re: [PATCH 12/12] cpufreq: governor: Narrow down the dbs_data_mutex coverage "Rafael J. Wysocki" <rafael@kernel.org> - 2016-02-18 17:40 +0100
      [PATCH v2 12/12] cpufreq: governor: Narrow down the dbs_data_mutex coverage "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-02-18 19:00 +0100
        Re: [PATCH v2 12/12] cpufreq: governor: Narrow down the  dbs_data_mutex coverage Viresh Kumar <viresh.kumar@linaro.org> - 2016-02-19 03:40 +0100

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