linux-kernel - Re: [PATCH v9 01/12] coresight: add CoreSight core layer framework

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Date:	Fri, 7 Nov 2014 11:30:54 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	mathieu.poirier@...aro.org
Cc:	linux@....linux.org.uk, pratikp@...eaurora.org, varshney@...com,
	Al.Grant@....com, jonas.svennebring@...gotech.com,
	james.king@...aro.org, kaixu.xia@...aro.org,
	marcin.jabrzyk@...il.com, r.sengupta@...sung.com,
	robbelibobban@...il.com, patches@...aro.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 01/12] coresight: add CoreSight core layer framework

On Fri, Nov 07, 2014 at 11:30:16AM -0800, Greg KH wrote:
> On Mon, Nov 03, 2014 at 11:07:35AM -0700, mathieu.poirier@...aro.org wrote:
> > From: Pratik Patel <pratikp@...eaurora.org>
> > 
> > CoreSight components are compliant with the ARM CoreSight
> > architecture specification and can be connected in various
> > topologies to suit a particular SoC tracing needs. These trace
> > components can generally be classified as sources, links and
> > sinks. Trace data produced by one or more sources flows through
> > the intermediate links connecting the source to the currently
> > selected sink.
> > 
> > The CoreSight framework provides an interface for the CoreSight trace
> > drivers to register themselves with. It's intended to build up a
> > topological view of the CoreSight components and configure the
> > correct serie of components on user input via sysfs.
> > 
> > For eg., when enabling a source, the framework builds up a path
> > consisting of all the components connecting the source to the
> > currently selected sink(s) and enables all of them.
> > 
> > The framework also supports switching between available sinks
> > and provides status information to user space applications
> > through the debugfs interface.
> > 
> > Signed-off-by: Pratik Patel <pratikp@...eaurora.org>
> > Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
> 
> You don't seem to document the sysfs files you create here in
> Documentation/ABI/ anywhere in the series.  Can you fix that up?
> 
> Other than that minor nit, this looks good to me.  Feel free to take it
> through some random ARM tree.

Wait, did you want me to take this through my tree?  If so, I'll be glad
to do so, I can't remember what we talked about here...

thanks,

greg k-h
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