linux-kernel - Re: [PATCH 2/2] i2c: Add message transfer tracepoints for SMBUS

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Message-ID: <24554.1393660107@warthog.procyon.org.uk>
Date:	Sat, 01 Mar 2014 07:48:27 +0000
From:	David Howells <dhowells@...hat.com>
To:	Wolfram Sang <wsa@...-dreams.de>
Cc:	dhowells@...hat.com, wolfram@...-dreams.de, khali@...ux-fr.org,
	linux-i2c@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] i2c: Add message transfer tracepoints for SMBUS

Wolfram Sang <wsa@...-dreams.de> wrote:

> > > Can we have something like this for 'flags'?
> > 
> > There's a __print_flags() which should work.  One thing I'm concerned about
> > there is how do we handle more flags being added - does that count as an ABI
> > break if the printed format changes?
> 
> Not sure, I mean, this is debug output, no?

Apparently, the raw messages are ABI, but the text dump (which is what we're
talking out) is not.  So doing this should be okay.

David
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