linux-kernel - Re: [PATCH 0/8] Rework KERN

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Date:	Tue, 05 Jun 2012 17:40:05 -0700
From:	Joe Perches <joe@...ches.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Kay Sievers <kay@...y.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-arm-kernel@...ts.infradead.org, linux-btrfs@...r.kernel.org,
	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
	alsa-devel@...a-project.org
Subject: Re: [PATCH 0/8] Rework KERN_<LEVEL>

On Tue, 2012-06-05 at 17:37 -0700, Andrew Morton wrote:
> On Tue, 05 Jun 2012 17:07:27 -0700 Joe Perches <joe@...ches.com> wrote:
> 
> > On Tue, 2012-06-05 at 16:58 -0700, Andrew Morton wrote:
> > >  echo "\0014Hello Joe" > /dev/kmsg
> > 
> > # echo -e "\x014Hello Me" > /dev/kmsg
> > gives:
> > 12,778,4057982669;Hello Me
> 
> That's changed behavior.

Which is an improvement too.
I very much doubt a single app will change
because of this.

> printk_emit() does parse the leading \0014, and then skips over it,
> removing it from the output stream.  printk_emit() then throws away the
> resulting level because devkmsg_writev() did not pass in level==-1.

I'm glad you know how it works now.

cheers, Joe


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