From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1752705AbdFPK0Y (ORCPT <rfc822;w@1wt.eu>);
        Fri, 16 Jun 2017 06:26:24 -0400
Received: from Galois.linutronix.de ([146.0.238.70]:53723 "EHLO
        Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1752037AbdFPK0W (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Fri, 16 Jun 2017 06:26:22 -0400
Date: Fri, 16 Jun 2017 12:26:17 +0200 (CEST)
From: Thomas Gleixner <tglx@linutronix.de>
To: Christoph Hellwig <hch@lst.de>
cc: Jens Axboe <axboe@kernel.dk>, Keith Busch <keith.busch@intel.com>,
        linux-nvme@lists.infradead.org, linux-block@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 5/8] genirq/affinity: update CPU affinity for CPU hotplug
 events
In-Reply-To: <20170603140403.27379-6-hch@lst.de>
Message-ID: <alpine.DEB.2.20.1706161223360.2254@nanos>
References: <20170603140403.27379-1-hch@lst.de> <20170603140403.27379-6-hch@lst.de>
User-Agent: Alpine 2.20 (DEB 67 2015-01-07)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Sat, 3 Jun 2017, Christoph Hellwig wrote:
> +static void irq_affinity_online_irq(unsigned int irq, struct irq_desc *desc,
> +				    unsigned int cpu)
> +{
> +
> +	cpumask_and(mask, affinity, cpu_online_mask);
> +	cpumask_set_cpu(cpu, mask);
> +	if (irqd_has_set(data, IRQD_AFFINITY_SUSPENDED)) {
> +		irq_startup(desc, false);
> +		irqd_clear(data, IRQD_AFFINITY_SUSPENDED);
> +	} else {
> +		irq_affinity_set(irq, desc, mask);

I don't think this should be forced. In that case we really can use the
regular mechanism.

Thanks,

	tglx