linux-kernel - Re: [PATCH][v6] PM / hibernate: Introduce test

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Message-ID: <20160728193206.GC8837@amd>
Date:	Thu, 28 Jul 2016 21:32:06 +0200
From:	Pavel Machek <pavel@....cz>
To:	Chen Yu <yu.c.chen@...el.com>
Cc:	Linux PM <linux-pm@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <lenb@...nel.org>,
	Linux Kernel Mail List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH][v6] PM / hibernate: Introduce test_resume mode for
 hibernation

On Fri 2016-07-22 10:30:47, Chen Yu wrote:
> test_resume mode is to verify if the snapshot data
> written to swap device can be successfully restored
> to memory. It is useful to ease the debugging process
> on hibernation, since this mode can not only bypass
> the BIOSes/bootloader, but also the system re-initialization.
> 
> To avoid the risk to break the filesystm on persistent storage,
> this patch resumes the image with tasks frozen.
> 
> For example:
> echo test_resume > /sys/power/disk
> echo disk > /sys/power/state
> 
> 
> Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> Signed-off-by: Chen Yu <yu.c.chen@...el.com>

Acked-by: Pavel Machek <pavel@....cz>

(And yes, I'd still like documentation patch for this, but that can be
done in separate patch.)

Thanks,
								Pavel
								
-- 
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