Re: [PATCH V4 3/3] cpufreq: Specify default governor on command line

Quentin Perret
2020-06-29T20:46:17Z

On Monday 29 Jun 2020 at 13:55:00 (+0530), Viresh Kumar wrote:
> static int __init cpufreq_core_init(void)
> {
> + struct cpufreq_governor *gov = cpufreq_default_governor();
> +
> if (cpufreq_disabled())
> return -ENODEV;
>
> cpufreq_global_kobject = kobject_create_and_add("cpufreq", &cpu_subsys.dev_root->kobj);
> BUG_ON(!cpufreq_global_kobject);
>
> + if (!strlen(default_governor))

Should we test '!strlen(default_governor) && gov' here actually?
We check the return value of cpufreq_default_governor() in
cpufreq_init_policy(), so I'm guessing we should do the same here to be
on the safe side.

> + strncpy(default_governor, gov->name, CPUFREQ_NAME_LEN);
> +
> return 0;
> }
> module_param(off, int, 0444);
> +module_param_string(default_governor, default_governor, CPUFREQ_NAME_LEN, 0444);
> core_initcall(cpufreq_core_init);
> --
> 2.25.0.rc1.19.g042ed3e048af

Other than that, the whole series looks good to me.

Thanks,
Quentin