linux-kernel - Re: [patch] suspend debugging: simulate suspend-to-RAM

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Message-Id: <200701251429.25081.rjw@sisk.pl>
Date:	Thu, 25 Jan 2007 14:29:24 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Pavel Machek <pavel@....cz>
Cc:	Ingo Molnar <mingo@...e.hu>, Andrew Morton <akpm@...l.org>,
	linux-kernel@...r.kernel.org, Linus Torvalds <torvalds@...l.org>,
	Len Brown <lenb@...nel.org>
Subject: Re: [patch] suspend debugging: simulate suspend-to-RAM

On Thursday, 25 January 2007 14:07, Pavel Machek wrote:
> Hi!
> 
> > Subject: [patch] suspend debugging: simulate suspend-to-RAM
> > From: Ingo Molnar <mingo@...e.hu>
> > 
> > most resume bugs are due to the kernel hanging or crashing while trying 
> > to resume a specific device. It is extremely hard to debug such hangs 
> > because often when the hang happens there's no console available
> > yet.
> 
> While the functionality is useful, no I do not think this should be
> configured by sysctl or kernel parameter.
> 
> Perhaps right interface is "echo fake-mem > /sys/power/state"? 

Yes, the "test" and "testproc" debug modes are started via /sys/power/state,
so let's make it consistent.

Greetings,
Rafael
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