linux-kernel - Re: [Query] Preemption (hogging) of the work handler

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Message-ID: <20160714215721.GD3057@ubuntu>
Date:	Thu, 14 Jul 2016 14:57:21 -0700
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Cc:	"Rafael J. Wysocki" <rafael@...nel.org>, Jan Kara <jack@...e.cz>,
	Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>, Tejun Heo <tj@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	vlevenetz@...sol.com,
	Vaibhav Hiremath <vaibhav.hiremath@...aro.org>,
	Alex Elder <alex.elder@...aro.org>, johan@...nel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Linux PM <linux-pm@...r.kernel.org>,
	Petr Mladek <pmladek@...e.com>
Subject: Re: [Query] Preemption (hogging) of the work handler

On 14-07-16, 10:32, Sergey Senozhatsky wrote:
> it wouldn't really, this silly question was not directly related to the
> deadlock we are discussing here but to Viresh's argument that later stages
> of suspending/hibernation seem to printk many messages in sync mode. so I
> thought that there might be a small benefit in suspending consoles later,
> as far as I understand, Viresh has `no_console_suspend' anyway. other

That option is enabled only for testing though :)

> than that, I tend to stick to the approach of switching to sync mode from
> suspend_console().

I actually need to test it out as well :)

-- 
viresh