linux-kernel - Re: rfc: remove early_printk from a few arches? (blackfin, m68k, mips)

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Date:	Fri, 19 Dec 2014 01:43:13 +0000
From:	Måns Rullgård <mans@...sr.com>
To:	Joe Perches <joe@...ches.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	linux-arch <linux-arch@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	linux-m68k <linux-m68k@...ts.linux-m68k.org>,
	Steven Miao <realmz6@...il.com>,
	Ralf Baechle <ralf@...ux-mips.org>,
	linux-mips <linux-mips@...ux-mips.org>
Subject: Re: rfc: remove early_printk from a few arches? (blackfin, m68k, mips)

Joe Perches <joe@...ches.com> writes:

> On Fri, 2014-12-19 at 00:33 +0100, Thomas Gleixner wrote:
>> On Wed, 17 Dec 2014, Joe Perches wrote:
>> > It seems like early_printk can be configured into
>> > a few architectures but also appear not to be used.
>> > 
>> > $ git grep -w "early_printk"
>> ...
>> > These seem to the only uses:
>> ... 
>> > So blackfin, m68k, and mips seems to have it possible to enable,
>> > but also don't appear at first glance to use it,
>> 
>> Hint: CONFIG_EARLY_PRINTK covers far more than early_printk()
>
> I know this.
>
> Note also I didn't specify CONFIG_EARLY_PRINTK,
> just early_printk.
>
>> > Is early_printk really used by these architectures?
>> > Should it be removed?
>> 
>> Sure, if you have a good reason to remove working functionality.
>
> Unused.

What exactly are you proposing to remove?  I see no unused code related
to early printk (in any variant) under arch/mips.

-- 
Måns Rullgård
mans@...sr.com
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