From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org ([198.137.202.9]:48871 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751537AbcDPBf4 (ORCPT ); Fri, 15 Apr 2016 21:35:56 -0400 From: Christoph Hellwig To: tglx@linutronix.de, linux-block@vger.kernel.org, linux-pci@vger.kernel.org Cc: linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 4/8] genirq: add a helper to program the pre-set affinity mask into the controller Date: Fri, 15 Apr 2016 18:35:48 -0700 Message-Id: <1460770552-31260-5-git-send-email-hch@lst.de> In-Reply-To: <1460770552-31260-1-git-send-email-hch@lst.de> References: <1460770552-31260-1-git-send-email-hch@lst.de> Sender: linux-pci-owner@vger.kernel.org List-ID: Signed-off-by: Christoph Hellwig --- include/linux/interrupt.h | 2 ++ kernel/irq/manage.c | 14 ++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 67bc1e1f..ae345da 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -713,4 +713,6 @@ extern char __softirqentry_text_end[]; #define __softirq_entry #endif +void irq_program_affinity(unsigned int irq); + #endif diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index cc1cc64..02552a4 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -240,6 +240,20 @@ int __irq_set_affinity(unsigned int irq, const struct cpumask *mask, bool force) return ret; } +void irq_program_affinity(unsigned int irq) +{ + struct irq_desc *desc = irq_to_desc(irq); + struct irq_data *data = irq_desc_get_irq_data(desc); + unsigned long flags; + + if (WARN_ON_ONCE(!desc)) + return; + + raw_spin_lock_irqsave(&desc->lock, flags); + irq_set_affinity_locked(data, desc->irq_common_data.affinity, false); + raw_spin_unlock_irqrestore(&desc->lock, flags); +} + int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m) { unsigned long flags; -- 2.1.4