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Date: Sat, 5 May 2007 11:39:32 +0200
From: "Rafael J. Wysocki" <rjw@...k.pl>
To: Ingo Molnar <mingo@...e.hu>
Cc: Greg KH <gregkh@...e.de>, Andrew Morton <akpm@...l.org>,
linux-kernel@...r.kernel.org, Pavel Machek <pavel@....cz>,
Linus Torvalds <torvalds@...l.org>, linux-pm@...ts.osdl.org
Subject: Re: [patch] suspend/resume debugging: device filter
On Saturday, 5 May 2007 11:24, Ingo Molnar wrote:
>
> * Greg KH <gregkh@...e.de> wrote:
>
> > Here's a (compile tested only) patch that does this on a per-device
> > basis, which is smaller, and should work just as well as your patch.
> >
> > It creates a new file in the power/ directory for every device called
> > "can_suspend". Write a '0' to it to prevent that device from being
> > suspended.
> >
> > Does this work for you?
>
> yeah, i was able to use this too to debug suspend/resume problems. But
> i've added the check to the resume path too - for example sw-suspend
> does a resume of devices during its suspend cycle, cutting off much of
> the netconsole output.
>
> which makes the can_suspend flag mis-named - perhaps rename it to
> exclude_pm ?
>
> updated patch below, against v2.6.21. Could we get this into v2.6.22
> please? It's a real time-saver.
ACK
Greetings,
Rafael
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