Re: [PATCH] PM: EM: do not allow pd creation prior to debugfs initialization

Chandrasekhar L
2021-10-20T12:04:12Z

Thanks Lukasz for comment.
For any reason (ex: HW dependency, etc), if  init_call level of cpufreq/devfreq driver changed
prior to fs_init call, we would land there right?

One of such example is, 'drivers/cpufreq/qcom-cpufreq-hw.c' uses postcore_initcall().

Thanks,
Chandrasekhar L

On 10/19/2021 10:35 PM, Lukasz Luba wrote:
>
>
> On 10/19/21 4:28 PM, Lingutla Chandrasekhar wrote:
>> em_dev_register_perf_domain() can be called from any initcall level before
>
> The EM is registered by cpufreq drivers (or devfreq), which is later
> than fs_initcall, so the debugfs is setup. We even have added recently
> a dedicated callback into the cpufreq (register_em()) for that.
>
> Do you have such code which registers EM for CPUs (or some devfreq)
> earlier than this fs_initcall?
>
> I cannot find such code in mainline.
>
> Regards,
> Lukasz

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