From: Chen Yu <yu.c.chen@intel.com>
To: Pavel Machek <pavel@ucw.cz>
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: Fri, 29 Jul 2016 16:22:10 +0800 [thread overview]
Message-ID: <20160729082210.GA8125@sharon> (raw)
In-Reply-To: <20160728193206.GC8837@amd>
On Thu, Jul 28, 2016 at 09:32:06PM +0200, Pavel Machek wrote:
> 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! Will update the doc in another patch.
Yu
prev parent reply other threads:[~2016-07-29 8:14 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
2016-07-29 8:22 ` Chen Yu [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160729082210.GA8125@sharon \
--to=yu.c.chen@intel.com \
--cc=lenb@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=pavel@ucw.cz \
--cc=rjw@rjwysocki.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).