linux-kernel - Re: [PATCH] printk: support structured and multi-facility log messages

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Date:	Thu, 5 Apr 2012 10:08:20 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Kay Sievers <kay@...y.org>
Cc:	Joe Perches <joe@...ches.com>,
	Greg Kroah-Hartmann <greg@...ah.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] printk: support structured and multi-facility log
	messages

> >
> > How are arbitrary key/value pairs attached
> > in a printk?
> 
> There are 120 lines in the changelog, and a 100 lines large comment
> block in the source code, and another 50 lines spread over the code,
> and the hexdump examples in it, and all that? Even without looking at
> a single line of code, it should be explained from different
> viewpoints more than once.

color me blind - but I could not find any example of how I specify
key/value pairs when I use printk().

I could find lots of internal information - that parts looks to
be extensively documented - good.

But how I as a user specify this I failed to find.
Today I do:

    printk(KERN_ERR "foobar is bad");

But how is that extended to include the key/value pairs?


	Sam
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