linux-kernel - Re: [RFC PATCH 0/0 v3] callchain fixes and cleanups

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Message-ID: <20100818035507.GE24748@nowhere>
Date:	Wed, 18 Aug 2010 05:55:09 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Will Deacon <will.deacon@....com>
Cc:	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Paul Mackerras <paulus@...ba.org>,
	Stephane Eranian <eranian@...gle.com>,
	Paul Mundt <lethal@...ux-sh.org>,
	David Miller <davem@...emloft.net>,
	Borislav Petkov <bp@...64.org>
Subject: Re: [RFC PATCH 0/0 v3] callchain fixes and cleanups

On Tue, Aug 17, 2010 at 11:32:39AM +0100, Will Deacon wrote:
> On Mon, 2010-08-16 at 21:48 +0100, Frederic Weisbecker wrote:
> > Hi,
> > 
> Hi Frederic,
> > 
> > This set factorizes a lot of callchain code and fixes concurrent
> > callchain buffers accesses.
> 
> > You can test it by pulling that branch:
> > 
> > git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git
> >         perf/callchains
> > 
> 
> I've tested this on an ARM Cortex-A9 board and it all seems fine [plus
> the code is a lot cleaner!].
> 
> Tested-by: Will Deacon <will.deacon@....com>


Thanks a lot!

BTW, out of curiosity, do you have NMIs on ARM and do the hardware events
make use of them? Or may be you use FIQ to simulate NMIs?

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