linux-kernel - Re: [PATCH 0/2] ftrace: handle NMIs safely

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Message-ID: <alpine.DEB.1.10.0810301714190.21031@gandalf.stny.rr.com>
Date:	Thu, 30 Oct 2008 17:15:20 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Ingo Molnar <mingo@...e.hu>
cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 0/2] ftrace: handle NMIs safely


On Thu, 30 Oct 2008, Ingo Molnar wrote:

> 
> * Steven Rostedt <rostedt@...dmis.org> wrote:
> 
> > The robustness of ftrace has been the focus of the code modification 
> > in 2.6.28. There is one remaining issue that needed to be addressed. 
> > This was the case of NMIs.
> 
> applied to tip/tracing/nmisafe, thanks Steve!
> 
> this looks a lot nicer approach than either putting some sort of lock 
> into NMI context (yuck) or the disabling of NMIs (not really possible 
> in a generic way architecturally).
> 
> the impact is quite non-trivial, so i dont think this is v2.6.28 
> material.

Ingo,

Do you want me to send patches on top of these to address Andrew's 
comements? Or do you want me to resend these with the updates.

I prefer to send patches on top, that way Andrew can make sure I did his 
changes correctly ;-)

-- Steve

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