From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932478AbcGDIkG (ORCPT ); Mon, 4 Jul 2016 04:40:06 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:56866 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932369AbcGDIj5 (ORCPT ); Mon, 4 Jul 2016 04:39:57 -0400 From: Christoph Hellwig To: tglx@linutronix.de, axboe@fb.com Cc: agordeev@redhat.com, linux-block@vger.kernel.org, linux-pci@vger.kernel.org, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 05/13] irq/msi: Make use of affinity aware allocations Date: Mon, 4 Jul 2016 17:39:26 +0900 Message-Id: <1467621574-8277-6-git-send-email-hch@lst.de> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1467621574-8277-1-git-send-email-hch@lst.de> References: <1467621574-8277-1-git-send-email-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Thomas Gleixner Allow the MSI code to provide affinity hints per MSI descriptor. Signed-off-by: Thomas Gleixner --- include/linux/msi.h | 2 ++ kernel/irq/msi.c | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/include/linux/msi.h b/include/linux/msi.h index c33abfa..4f0bfe5 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -47,6 +47,7 @@ struct fsl_mc_msi_desc { * @nvec_used: The number of vectors used * @dev: Pointer to the device which uses this descriptor * @msg: The last set MSI message cached for reuse + * @affinity: Optional pointer to a cpu affinity mask for this descriptor * * @masked: [PCI MSI/X] Mask bits * @is_msix: [PCI MSI/X] True if MSI-X @@ -67,6 +68,7 @@ struct msi_desc { unsigned int nvec_used; struct device *dev; struct msi_msg msg; + const struct cpumask *affinity; union { /* PCI MSI/X specific data */ diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c index 58dbbac..0e2a736 100644 --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -335,7 +335,7 @@ int msi_domain_alloc_irqs(struct irq_domain *domain, struct device *dev, virq = __irq_domain_alloc_irqs(domain, -1, desc->nvec_used, dev_to_node(dev), &arg, false, - NULL); + desc->affinity); if (virq < 0) { ret = -ENOSPC; if (ops->handle_error) -- 2.1.4