linux-kernel - Re: [PATCH 1/3 v4] Add tracing_off_event() to stop tracing when a bug or warning occur

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Date:	Thu, 15 Apr 2010 22:13:22 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Chase Douglas <chase.douglas@...onical.com>
Cc:	linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Randy Dunlap <randy.dunlap@...cle.com>
Subject: Re: [PATCH 1/3 v4] Add tracing_off_event() to stop tracing when a
	bug or warning occur

On Wed, Apr 14, 2010 at 12:20:14PM -0400, Chase Douglas wrote:
> The tracing_off_event() function calls tracing_off() to stop tracing
> when an event occurs. By default, only BUG-type events stop tracing,
> while WARNING type events do not. This is controlled through the
> tracing_off={none,warn,bug} commandline parameter.
> 
> Call this function from bug and warning event handlers to enable a user
> to debug their kernel by starting a trace, hitting an event, and then
> retrieving trace info knowing that the trace was stopped right after the
> event was hit.


That's a good idea!


> 
> Signed-off-by: Chase Douglas <chase.douglas@...onical.com>


Acked-by: Frederic Weisbecker <fweisbec@...il.com>

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