linux-kernel - Re: [PATCH] introduce boot

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Date:	Tue, 16 Sep 2008 10:47:17 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	"Peter Zijlstra" <a.p.zijlstra@...llo.nl>,
	"Ingo Molnar" <mingo@...e.hu>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, jbaron <jbaron@...hat.com>
Subject: Re: [PATCH] introduce boot_printk()

On Tue, Sep 16, 2008 at 10:45 AM, Yinghai Lu <yhlu.kernel@...il.com> wrote:
> On Tue, Sep 16, 2008 at 9:06 AM, H. Peter Anvin <hpa@...or.com> wrote:
>> Peter Zijlstra wrote:
>>>>
>>>> every subsystem will have
>>>> x86_printk
>>>> acpi_printk
>>>> pci_printk
>>>
>>> doesn't sound like an easily extensible interface, better would be
>>> extending printk with a KERN_subsys tag like proposed.
>>>
>>
>> That would be my thinking too.
>
> it seem using pci_printk or acpi_printk.. could be more flexible.
>
> otherwise will need to keep update linux/kernel.h to add so call subsys tags...
>
> use only need to
> have DEFINE_LOGLEVEL_SETUP(xxx) in c
> and have DECLARE_LOGLEVEL(xxx) in .h
> then just use xxx_printk
>
and in real subsys could have as many the xxx_printk that user want...

YH
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