linux-kernel - Re: what is the difference between shutdown command and writing to /sys/power/state

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Message-Id: <200709202225.41429.rjw@sisk.pl>
Date:	Thu, 20 Sep 2007 22:25:41 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	"Agarwal, Lomesh" <lomesh.agarwal@...el.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: what is the difference between shutdown command and writing to /sys/power/state

On Thursday, 20 September 2007 20:11, Agarwal, Lomesh wrote:
> Can someone tell me the flow of code for these two scenarios -
> I write disk to /sys/power/state. How does system go to hibernation? How
> does this trigger ACPI driver functions?
> I issue shutdown command.
> I am using 2.6.18 kernel.

It's quite old for current standards. :-)

I'll need to get the source and look into it to be able to answer, so please
give me some time.

BTW, please don't top post.

Greetings,
Rafael
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