linux-kernel - Re: [PATCH] TTY:vt: convert remain take_over_console's users to do_take_over

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Date:	Thu, 6 Jun 2013 09:23:13 +0800
From:	Wang YanQing <udknight@...il.com>
To:	Pavel Machek <pavel@....cz>
Cc:	gregkh@...uxfoundation.org, sfr@...b.auug.org.au,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] TTY:vt: convert remain take_over_console's users to
 do_take_over_console

On Tue, Jun 04, 2013 at 10:13:18PM +0200, Pavel Machek wrote:
> On Tue 2013-05-21 13:15:12, Wang YanQing wrote:
> > Impact:
> > 1:convert all remain take_over_console to do_take_over_console
> 
> This is step backwards.

What is step backwards? do_take_over_console appear MUCH MUCH later in kernel
than take_over_console, do_take_over_console is the new API, I can't understand
what is step backwards.

> > --- a/arch/alpha/kernel/console.c
> > +++ b/arch/alpha/kernel/console.c
> > @@ -61,7 +61,9 @@ locate_and_init_vga(void *(*sel_func)(void *, void *))
> >  
> >  	/* Set the VGA hose and init the new console. */
> >  	pci_vga_hose = hose;
> > -	take_over_console(&vga_con, 0, MAX_NR_CONSOLES-1, 1);
> > +	console_lock();
> > +	do_take_over_console(&vga_con, 0, MAX_NR_CONSOLES-1, 1);
> > +	console_unlock();
> >  }
> 
> Original was better.

Except reduce some console_lock/unlock scatter scattered in kernel, I 
can't see the "BETTER", and it is not a BIG problem for the benefit to
unify the API.

Thanks.
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