From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Mon, 24 Aug 2015 20:14:26 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Message-ID: <20150824181426.GA21893@hermes.click-hack.org>
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Subject: [Xenomai] perf nmi on x86
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To: Jan Kiszka <jan.kiszka@siemens.com>, Xenomai <xenomai@xenomai.org>

Hi Jan,

running Xenomai on an x86 machine, I noticed that the perf NMI was
ticking. It seems CONFIG_PERF can not be disabled in the kernel
configuration.

So, the first question is: 
is there a way of disabling the NMI ?
second question is: 
if not, what do we do about it? 

I mean, on the one hand, disabling the NMI is probably mandatory on
a system where latency matters, but on the other hand, some users
may want it enabled and do not care for the additional latency.

Regards.

-- 
					    Gilles.
https://click-hack.org