linux-kernel - Re: [PATCH 7/8] xtensa: implement counting and sampling perf events

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Message-ID: <20150706134708.GI3644@twins.programming.kicks-ass.net>
Date:	Mon, 6 Jul 2015 15:47:08 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Max Filippov <jcmvbkbc@...il.com>
Cc:	linux-xtensa@...ux-xtensa.org, linux-kernel@...r.kernel.org,
	Chris Zankel <chris@...kel.net>,
	Marc Gauthier <marc@...ence.com>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: Re: [PATCH 7/8] xtensa: implement counting and sampling perf events

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?


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