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

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Message-ID: <519B976A.3050708@hurleysoftware.com>
Date:	Tue, 21 May 2013 11:48:58 -0400
From:	Peter Hurley <peter@...leysoftware.com>
To:	Wang YanQing <udknight@...il.com>
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 05/21/2013 10:42 AM, Wang YanQing wrote:
> On Tue, May 21, 2013 at 09:10:33AM -0400, Peter Hurley wrote:
>> I would rather revert dc9641895abb which purported to delete
>> _unneeded_ functions than have this. Obviously the functions
>> were needed.
>>
>
> Hi Peter, this series patches' goal is to reduce codes'
> redundance and function duplication. But if we keep take_over_console,
> then we have to rewrite it as a trivial wrapper over do_take_over_console,
> or we have to keep bind_con_driver and register_con_driver, and this
> will bring use codes' redundance.
>
> And if we rewrite take_over_console as a wrapper over
> do_take_over_console, it is so trivial, delete it and let kernel
> use the unified version of APIs will simplify the APIs.

Except now you're spreading the brokenness that is console_lock()
over many more source files than the single-use case of
do_take_over_console().

The actual interface is take_over_console(); the _workaround_ is
exposing do_take_over_console() for fbcon to wrap.

Regards,
Peter Hurley

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