linux-kernel - Re: [Patch, RFC] Make struct fb

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Message-ID: <alpine.LFD.2.00.1009222013390.25874@casper.infradead.org>
Date:	Wed, 22 Sep 2010 20:14:43 +0100 (BST)
From:	James Simmons <jsimmons@...radead.org>
To:	Bruno Prémont <bonbons@...ux-vserver.org>
cc:	Florian Tobias Schandinat <FlorianSchandinat@....de>,
	Linux Fbdev development list <linux-fbdev@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Bernie Thompson <bernie@...gable.com>
Subject: Re: [Patch, RFC] Make struct fb_info ref-counted with kref


> On Wed, 22 September 2010 James Simmons <jsimmons@...radead.org> wrote:
> > > This year someone said he/she would look at making it possible to have
> > > multiple concurrently active consoles on distinct framebuffers.
> > > Hopefully something is happening on that front (that would certainly
> > > also include some fbcon cleanup)
> > 
> > That would be me.
> 
> Thanks for showing up (I didn't find the matching thread, probably
> subject and my search terms were no good friends :)

No problem.
 
> > I have a tree at
> > 
> > http://git.infradead.org/users/jsimmons/linuxconsole-2.6.git
> > 
> > but currently fbcon is broken so I'm tracing down the problem.
> 
> Thanks for the reference to your tree!
> 
> What's you opinion regarding my changes to fbcon in my RFC patch?
> Are they ok or would you prefer having fbcon changed to stop peeking
> at registered_fb list and just operate directly on fb_info everywhere
> it needs it? (that is let con2fb_map[] point to fb_info instead of
> indexes into registered_fb? (I have a preference for the second one
> and will try it out)

I'm aiming to kill off registered_fb. I agree that fb_info should be used 
directly and we can avoid the ref-count. As for con2fb_map that is a 
little more complex. 
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