linux-kernel - Re: [PATCH] tracing/function-return-tracer: Add a barrier to ensure return stack index is incremented in memory

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Date:	Sun, 16 Nov 2008 07:43:04 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH] tracing/function-return-tracer: Add a barrier to
	ensure return stack index is incremented in memory


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

> Impact: Fix possible race condition in ftrace function return tracer
> 
> This fixes a possible race condition if index incrementation
> is not immediately flushed in memory.
> 
> Thanks for Andi Kleen and Steven Rostedt for pointing out this issue
> and give me this solution.
> 
> Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
> Cc: Steven Rostedt <rostedt@...dmis.org>

applied, thanks Frederic!

	Ingo
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