linux-kernel - Re: [PATCH] Prefix each line of multiline printk(KERN_<level> "foo\nbar") with KERN

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Message-ID: <Pine.LNX.4.64.0708261028120.31149@anakin>
Date:	Sun, 26 Aug 2007 10:30:41 +0200 (CEST)
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Joe Perches <joe@...ches.com>
cc:	linux-kernel@...r.kernel.org, blinux-list@...hat.com,
	cluster-devel@...hat.com, discuss@...-64.org, jffs-dev@...s.com,
	linux-acpi@...r.kernel.org, linux-ide@...r.kernel.org,
	linux-mips@...ux-mips.org, linux-mm@...ck.org,
	linux-mtd@...ts.infradead.org, linux-scsi@...r.kernel.org,
	mpt_linux_developer@....com, netdev@...r.kernel.org,
	osst-users@...ts.sourceforge.net, parisc-linux@...isc-linux.org,
	tpmdd-devel@...ts.sourceforge.net,
	uclinux-dist-devel@...ckfin.uclinux.org
Subject: Re: [PATCH] Prefix each line of multiline printk(KERN_<level>
 "foo\nbar") with KERN_<level>

On Fri, 24 Aug 2007, Joe Perches wrote:
> Corrected printk calls with multiple output lines which
> did not correctly preface each line with KERN_<level>
> 
> Fixed uses of some single lines with too many KERN_<level>

> --- a/arch/arm/kernel/ecard.c
> +++ b/arch/arm/kernel/ecard.c
> @@ -547,7 +547,8 @@ static void ecard_check_lockup(struct irq_desc *desc)
>  	if (last == jiffies) {
>  		lockup += 1;
>  		if (lockup > 1000000) {
> -			printk(KERN_ERR "\nInterrupt lockup detected - "
> +			printk(KERN_ERR "\n"
> +			       KERN_ERR "Interrupt lockup detected - "
>  			       "disabling all expansion card interrupts\n");
>  
>  			desc->chip->mask(IRQ_EXPANSIONCARD);

What's the purpose of having lines printed with e.g. `KERN_ERR "\n"' only?
Shouldn't these just be removed?

Usually lines starting with `\n' are continuations, but given some other
module may call printk() in between, there's no guarantee continuations
appear on the same line.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
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