linux-kernel - Re: what the patches do Re: [RFC 10/15] PM / Hibernate: user, implement user

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Message-Id: <201003252114.36605.rjw@sisk.pl>
Date:	Thu, 25 Mar 2010 21:14:36 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Nigel Cunningham <ncunningham@...a.org.au>
Cc:	Pavel Machek <pavel@....cz>, Jiri Slaby <jslaby@...e.cz>,
	jirislaby@...il.com, linux-pm@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: what the patches do Re: [RFC 10/15] PM / Hibernate: user, implement user_ops reader

On Thursday 25 March 2010, Nigel Cunningham wrote:
> Hi.
> 
> On 25/03/10 16:30, Pavel Machek wrote:
> [...]
> 
> > I have some problems with sws_module_ops interface (handcoded locking
> > is too ugly to live), but it is better than I expected. But there may
> > be better solution available, one that does not need two interfaces to
> > maintain (we can't really get rid of userland interface). What about
> > this?
> 
> Just picking up on that bracketed part: Can we flag the userland 
> interface (and uswsusp) as being planned for eventual removal now... or 
> at least agree to work toward that?

No, we can't.

> I'm asking because if we're going to make a go of getting the in-kernel 
> code in much better shape, and we have Rafael, Jiri and I - and you? - 
> all pulling in the same direction to improve it, there's going to come a 
> point (hopefully not too far away) where uswsusp is just making life too 
> difficult, and getting rid of it will be a big help.

We're not dropping user space interfaces used by every distro I know of.

Rafael
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