Re: [PATCH V3 09/13] cpufreq: governor: Move common sysfs tunables to cpufreq_governor.c

From: Rafael J. Wysocki
Date: Mon Feb 08 2016 - 08:24:46 EST


On Mon, Feb 8, 2016 at 2:03 PM, Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote:
> On 08-02-16, 13:58, Rafael J. Wysocki wrote:
>> My most fundamental concern here is that attributes that don't apply
>> to a particular governor should not appear in sysfs at all when that
>> governor is in use (instead of appearing and always returning -EINVAL
>
> s/is in use/is not in use/ ??
>
>> which is sort of silly).
>
> But who said that I have made them available always ? Sorry, I didn't
> understood your input.
>
> I have just moved the show/store callbacks and the struct
> governor_attr definition to cpufreq_governor.c. And sysfs files are
> created only for the ones that are valid for a governor.

OK, I need to look at it more carefully then.

>> That doesn't mean the common code cannot access them, though. They
>> still can be present in the data structure, but it may be a good idea
>> to set them to special values clearly meaning "invalid" then.
>
> Or are you saying that we should move all the tunables to dbs_data ?

Well, maybe. I'm not sure, but that may be done later in any case.

Thanks,
Rafael