linux-kernel - Re: [for-next][PATCH 19/21] v4l: Export enums used by tracepoints to user space

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Date:	Wed, 8 Apr 2015 10:56:05 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Mauro Carvalho Chehab <mchehab@....samsung.com>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Subject: Re: [for-next][PATCH 19/21] v4l: Export enums used by tracepoints
 to user space

On Wed, 8 Apr 2015 11:43:02 -0300
Mauro Carvalho Chehab <mchehab@....samsung.com> wrote:

> Em Wed, 08 Apr 2015 09:48:23 -0400
> Steven Rostedt <rostedt@...dmis.org> escreveu:
> 
> > From: "Steven Rostedt (Red Hat)" <rostedt@...dmis.org>
> > 
> > Enums used by tracepoints for __print_symbolic() are shown in the
> > tracepoint format files with just their names and not their values.
> > This makes it difficult for user space tools to know how to convert the
> > binary data into their string representations.
> > 
> > By adding the use of TRACE_DEFINE_ENUM(), the enum names will be mapped
> > to their values and shown in the tracing file system to let tools
> > convert the data as necessary.
> > 
> > Link: http://lkml.kernel.org/r/20150403013802.220157513@goodmis.org
> > 
> > Cc: Mauro Carvalho Chehab <m.chehab@...sung.com>
> 
> Acked-by: Mauro Carvalho Chehab <mchehab@....samsung.com>
> 

Thanks!

-- Steve
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