linux-kernel - Re: [PATCH 3/3] tracing/function-graph-tracer: append the tracing_graph

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Date:	Mon, 8 Dec 2008 15:15:47 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] tracing/function-graph-tracer: append the
	tracing_graph_flag


* Frederic Weisbecker <fweisbec@...il.com> wrote:

> Impact: Provide a way to pause the function graph tracer
> 
> As suggested by Steven Rostedt, the previous patch that prevented from 
> spinlock function tracing shouldn't use the raw_spinlock to fix it. 
> It's much better to follow lockdep with normal spinlock, so this patch 
> adds a new flag for each task to make the function graph tracer able to 
> be paused. We also can send an ftrace_printk whithout worrying of the 
> irrelevant traced spinlock during insertion.
> 
> Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>

applied to tip/tracing/function-graph-tracer, thanks Frederic!

	Ingo
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