From: tip-bot for Thomas Gleixner <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: hch@lst.de, linux-kernel@vger.kernel.org, tglx@linutronix.de,
hpa@zytor.com, mingo@kernel.org
Subject: [tip:irq/core] genirq/msi: Make use of affinity aware allocations
Date: Mon, 4 Jul 2016 03:33:59 -0700 [thread overview]
Message-ID: <tip-0972fa57f53525ffa6ced12d703750fc2791e3ce@git.kernel.org> (raw)
In-Reply-To: <1467621574-8277-6-git-send-email-hch@lst.de>
Commit-ID: 0972fa57f53525ffa6ced12d703750fc2791e3ce
Gitweb: http://git.kernel.org/tip/0972fa57f53525ffa6ced12d703750fc2791e3ce
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Mon, 4 Jul 2016 17:39:26 +0900
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Mon, 4 Jul 2016 12:25:14 +0200
genirq/msi: Make use of affinity aware allocations
Allow the MSI code to provide affinity hints per MSI descriptor.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: linux-block@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: linux-nvme@lists.infradead.org
Cc: axboe@fb.com
Cc: agordeev@redhat.com
Link: http://lkml.kernel.org/r/1467621574-8277-6-git-send-email-hch@lst.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
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)
next prev parent reply other threads:[~2016-07-04 10:34 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-04 8:39 automatic interrupt affinity for MSI/MSI-X capable devices V3 Christoph Hellwig
2016-07-04 8:39 ` [PATCH 01/13] irq/msi: Remove unused MSI_FLAG_IDENTITY_MAP Christoph Hellwig
2016-07-04 10:32 ` [tip:irq/core] genirq/msi: " tip-bot for Thomas Gleixner
2016-07-04 8:39 ` [PATCH 02/13] irq: Introduce IRQD_AFFINITY_MANAGED flag Christoph Hellwig
2016-07-04 10:32 ` [tip:irq/core] genirq: " tip-bot for Thomas Gleixner
2016-07-04 8:39 ` [PATCH 03/13] irq: Add affinity hint to irq allocation Christoph Hellwig
2016-07-04 10:33 ` [tip:irq/core] genirq: " tip-bot for Thomas Gleixner
2016-07-04 8:39 ` [PATCH 04/13] irq: Use affinity hint in irqdesc allocation Christoph Hellwig
2016-07-04 10:33 ` [tip:irq/core] genirq: " tip-bot for Thomas Gleixner
2016-07-04 8:39 ` [PATCH 05/13] irq/msi: Make use of affinity aware allocations Christoph Hellwig
2016-07-04 10:33 ` tip-bot for Thomas Gleixner [this message]
2016-07-04 8:39 ` [PATCH 06/13] irq: add a helper spread an affinity mask for MSI/MSI-X vectors Christoph Hellwig
2016-07-04 10:34 ` [tip:irq/core] genirq: Add a helper to " tip-bot for Christoph Hellwig
2016-07-04 8:39 ` [PATCH 07/13] pci: Provide sensible irq vector alloc/free routines Christoph Hellwig
2016-07-06 8:05 ` Alexander Gordeev
2016-07-10 3:47 ` Christoph Hellwig
2016-07-11 10:43 ` Alexander Gordeev
2016-07-12 9:13 ` Christoph Hellwig
2016-07-12 12:46 ` Alexander Gordeev
2016-07-04 8:39 ` [PATCH 08/13] pci: spread interrupt vectors in pci_alloc_irq_vectors Christoph Hellwig
2016-07-07 11:05 ` Alexander Gordeev
2016-07-10 3:57 ` Christoph Hellwig
2016-07-12 6:49 ` Alexander Gordeev
2016-07-04 8:39 ` [PATCH 09/13] blk-mq: don't redistribute hardware queues on a CPU hotplug event Christoph Hellwig
2016-07-04 8:39 ` [PATCH 10/13] blk-mq: only allocate a single mq_map per tag_set Christoph Hellwig
2016-07-04 8:39 ` [PATCH 11/13] blk-mq: allow the driver to pass in an affinity mask Christoph Hellwig
2016-07-04 8:39 ` [PATCH 12/13] nvme: switch to use pci_alloc_irq_vectors Christoph Hellwig
2016-07-07 19:30 ` Alexander Gordeev
2016-07-10 3:59 ` Christoph Hellwig
2016-07-04 8:39 ` [PATCH 13/13] nvme: remove the post_scan callout Christoph Hellwig
2016-07-04 10:30 ` automatic interrupt affinity for MSI/MSI-X capable devices V3 Thomas Gleixner
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