Re: [PATCH V3 03/13] cpufreq: governor: New sysfs show/store callbacks for governor tunables

From: Rafael J. Wysocki
Date: Tue Feb 09 2016 - 15:19:24 EST


On Tuesday, February 09, 2016 08:51:26 AM Viresh Kumar wrote:
> On 08-02-16, 22:36, Rafael J. Wysocki wrote:
> > On Mon, Feb 8, 2016 at 12:39 PM, Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote:
> > > + ret = kobject_init_and_add(&dbs_data->kobj, &gov->kobj_type,
> > > + get_governor_parent_kobj(policy),
> > > + gov->kobj_name);
> >
> > Besides, you forgot about the format argument for kobject_init_and_add().
>
> What about that? Why is it required here ? We don't have to modify the
> gov->gov.name string at all, and that string can be used here without adding any
> more format arguments.

But that's because the governor name is a static string and we can safely pass
it as a format (because we know that it doesn't contain any output field specifiers
in particular).

So either there should be a comment to that effect in the code, or the format
argument should be present.

Thanks,
Rafael