linux-kernel - Re: [PATCH 5/6] dyndbg: in dynamic_emit_prefix, change inter-field separator

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Date:	Tue, 18 Sep 2012 19:56:42 -0700
From:	Joe Perches <joe@...ches.com>
To:	Jim Cromie <jim.cromie@...il.com>
Cc:	jbaron@...hat.com, linux-kernel@...r.kernel.org,
	gregkh@...uxfoundation.org
Subject: Re: [PATCH 5/6] dyndbg: in dynamic_emit_prefix, change inter-field
 separator

On Tue, 2012-09-18 at 17:36 -0600, Jim Cromie wrote:
> dynamic_emit_prefix() currently separates modname, funcname, lineno
> with ':'.  This is confounds use of cut -d: <logfile>, since the field
> positions can change per callsite with dynamic-debug.  So change
> inter-field separator to '.' and keep the ':' prefix terminator.
> 
> This improves the situation, but doesnt solve it entirely; if
> dyndbg==p is used instead of dyndbg==p[fmlt]+, the callsite is enabled
> but no prefix is added, so theres one less ':' in the message.
> Changing the terminator to ',' would fix this, and might be warranted,
> especially since pr_fmt() typically adds a ':' as well.
> 
> Joe Perches wasnt a fan of this, but his complaint was essentially
> that cut -d: was a poor way to do this kind of thing.  I concede that
> point, but note that the kernel is not in the habit of needlessly
> confounding users work, at least when accommodating them is so trivial.

And I still think this is ugly as it requires different parsing
by scripts when using combinations of +pfmlt


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