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Date: Mon, 6 Jul 2015 15:47:08 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Max Filippov <jcmvbkbc@gmail.com>
Cc: linux-xtensa@linux-xtensa.org, linux-kernel@vger.kernel.org,
        Chris Zankel <chris@zankel.net>, Marc Gauthier <marc@cadence.com>,
        Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>
Subject: Re: [PATCH 7/8] xtensa: implement counting and sampling perf events
Message-ID: <20150706134708.GI3644@twins.programming.kicks-ass.net>
References: <1436189569-28802-1-git-send-email-jcmvbkbc@gmail.com>
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On Mon, Jul 06, 2015 at 04:32:48PM +0300, Max Filippov wrote:
> +static int __init xtensa_pmu_init(void)
> +{
> +	int ret;
> +	int irq = irq_create_mapping(NULL, XCHAL_PROFILING_INTERRUPT);

Does this platform have interrupt priorities which you can partially
mask in order to create NMI like behaviour?