From: Pavel Machek <pavel@ucw.cz>
To: Chen Yu <yu.c.chen@intel.com>
Cc: Linux PM <linux-pm@vger.kernel.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Len Brown <lenb@kernel.org>,
Linux Kernel Mail List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH][v6] PM / hibernate: Introduce test_resume mode for hibernation
Date: Thu, 28 Jul 2016 21:32:06 +0200 [thread overview]
Message-ID: <20160728193206.GC8837@amd> (raw)
In-Reply-To: <1469154647-5860-1-git-send-email-yu.c.chen@intel.com>
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@intel.com>
> Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
(And yes, I'd still like documentation patch for this, but that can be
done in separate patch.)
Thanks,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2016-07-28 19:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-22 2:30 [PATCH][v6] PM / hibernate: Introduce test_resume mode for hibernation Chen Yu
2016-07-28 19:32 ` Pavel Machek [this message]
2016-07-29 8:22 ` Chen Yu
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