linux-kernel - Re: [Announce] Linux-tiny project revival

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Message-Id: <200709271906.48601.rob@landley.net>
Date:	Thu, 27 Sep 2007 19:06:48 -0500
From:	Rob Landley <rob@...dley.net>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-tiny@...enic.com, Tim Bird <tim.bird@...sony.com>,
	linux kernel <linux-kernel@...r.kernel.org>,
	CE Linux Developers List <celinux-dev@...e.celinuxforum.org>,
	Michael Opdenacker <michael@...e-electrons.com>
Subject: Re: [Announce] Linux-tiny project revival

On Thursday 27 September 2007 2:00:36 am Arnd Bergmann wrote:
> #define KERN_NOTICE "<5>",
>
> #define PRINTK_CONTINUED "",
>
>  #define printk(level, str, ...) \
>    do { \
>      if (sizeof(level) == 1) /* continued printk */\
> 	actual_printk(str, __VA_ARGS__); \
>      else if ((level[1] - '0') < CONFIG_PRINTK_DOICARE) \
>        actual_printk(level str, __VA_ARGS__); \
>    } while(0);
>
> Then you don't have to change every single printk in the kernel, but
> only those that don't currently come with a log level. More importantly,
> you can do the conversion without a flag day, by spreading (an empty)
> PRINTK_CONTINUED in places that do need a printk without a log level.

The "change every printk in the kernel" suggestion came from me trying to 
figure out how to get the printk() calls below a certain log level to 
optimize out and not take up space in the binary.

The above doesn't address the original cause of the thread, as far as I can 
tell.

> 	Arnd <><

Rob
-- 
"One of my most productive days was throwing away 1000 lines of code."
  - Ken Thompson.
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