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SubjectRe: [PATCH v2] cpufreq: Register with perf domain before
On 18-01-23, 12:47, Vincent Wang wrote:
> From: Vincent Wang <vincentwang3@lenovo.com>
>
> We found the following issue during kernel boot on android phone:
>
> [ 1.325272][ T1] cpu cpu0: EM: created perf domain
> [ 1.329317][ T1] cpu cpu4: EM: created perf domain
> [ 1.337597][ T76] pd_init: no EM found for CPU7
> [ 1.350849][ T1] cpu cpu7: EM: created perf domain
>
> pd init for cluster2 is executed in a kworker thread and
> is earlier than the perf domain creation for cluster2.

Can you please give detail of the exact code path, for mainline kernel
? I am not sure which kworker thread are you talking about here.

> pd_init() is called from the cpufreq notification of
> CPUFREQ_CREATE_POLICY in cpufreq_online(), which is earlier
> than that cpufreq_driver->register_em() is called.

--
viresh

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