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Date:	Thu, 10 Jul 2014 14:01:25 -0400
From:	Steven Rostedt <>
To:	Tuomas Tynkkynen <>
Cc:	<>, Ingo Molnar <>,
	Andrew Morton <>
Subject: Re: [for-next][PATCH 04/21] ftrace: Optimize function graph to be
 called directly

On Thu, 10 Jul 2014 20:45:57 +0300
Tuomas Tynkkynen <> wrote:

> This commit (79922b8) breaks the function graph tracer on today's -next. 
> This is on an ARM Tegra board.
> I'm using ftrace with this script:
> #!/bin/sh
> echo function_graph > /d/tracing/current_tracer
> echo clear > /d/tracing/trace
> echo $$ > /d/tracing/set_ftrace_pid
> exec "$@"
> ...and a simple './ ls' crashes with no console output. SysRq is 
> not responsive either.

Thanks for the report. I'll boot up one of my arm boards and see if I
can reproduce it. I'll try to get to it either this week or next.

-- Steve

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