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From: "Rafael J. Wysocki" <rafael@kernel.org>
Date: Wed, 13 Jul 2016 15:22:58 +0200
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Subject: Re: [Query] Preemption (hogging) of the work handler
To: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
        Viresh Kumar <viresh.kumar@linaro.org>, Petr Mladek <pmladek@suse.com>,
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On Wed, Jul 13, 2016 at 2:57 PM, Sergey Senozhatsky
<sergey.senozhatsky@gmail.com> wrote:
> Hello Rafael,
>
> On (07/13/16 14:05), Rafael J. Wysocki wrote:
> [..]
>> > ah, just saw this. OK, very close to what I sent in another thread, so I
>> > guess it will work on your side.
>> > let me know if it doesn't, I'll fold it into 0001 and re-spin the series.
>> > thanks for your help!
>>
>> But you need to do an analogous thing for hibernation.  Essentially,
>> wherever disable_nonboot_cpus() is called.
>
> hibernation() suspends console, and suspend_console() forces printk to
> switch to sync mode. resume_console() lets printk to operate in async
> mode (if printk was configured to operate in async mode at all).
>
> the patch I'm talking about is:
>  http://marc.info/?l=linux-kernel&m=146838876027364&w=2

Ah OK.  That should work for hibernation too.

> am I missing something?

No, I got confused for some reason.

Thanks,
Rafael