Re: [PATCH 0/1] kthreads: simplify !kthreadd_task logic, killkthreadd_task_init_done

[Oleg Nesterov]

On 09/18, Oleg Nesterov wrote:
>
> But personally I still can't understand what happens. If we were
> preempted somewhere before "kthreadd_task = find_task_by_pid_ns()"
> initialization, then schedule_debug() should complain? rest_init()
> runs under preempt_disable().

Ah. CONFIG_PREEMPT_VOLUNTARY means !CONFIG_PREEMPT, and Ingo mentioned
that SMP is disabled, this also means lock_kernel() is noop.

Oleg.

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