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Date: Wed, 13 Jul 2016 21:57:04 +0900
From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
        Viresh Kumar <viresh.kumar@linaro.org>, Petr Mladek <pmladek@suse.com>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>, Jan Kara <jack@suse.cz>,
        Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
        Tejun Heo <tj@kernel.org>,
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        vlevenetz@mm-sol.com, vaibhav.hiremath@linaro.org,
        alex.elder@linaro.org, johan@kernel.org,
        Andrew Morton <akpm@linux-foundation.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Linux PM <linux-pm@vger.kernel.org>
Subject: Re: [Query] Preemption (hogging) of the work handler
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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

am I missing something?

	-ss