linux-kernel - [tip:irq/numa] irq: make ht irq

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Date:	Fri, 1 May 2009 17:07:58 GMT
From:	tip-bot for Yinghai Lu <yinghai@...nel.org>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	yinghai@...nel.org, rusty@...tcorp.com.au, ebiederm@...ssion.com,
	akpm@...ux-foundation.org, suresh.b.siddha@...el.com,
	tglx@...utronix.de, mingo@...e.hu
Subject: [tip:irq/numa] irq: make ht irq_desc more numa aware

Commit-ID:  56b581ea9591b5767b1e0204c6a06c7d0c49396e
Gitweb:     http://git.kernel.org/tip/56b581ea9591b5767b1e0204c6a06c7d0c49396e
Author:     Yinghai Lu <yinghai@...nel.org>
AuthorDate: Mon, 27 Apr 2009 18:02:46 -0700
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Tue, 28 Apr 2009 12:21:19 +0200

irq: make ht irq_desc more numa aware

Try to get irq_desc on the same node as create_irq_nr().

[ Impact: optimization, make HT IRQs more NUMA-aware ]

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Suresh Siddha <suresh.b.siddha@...el.com>
Cc: "Eric W. Biederman" <ebiederm@...ssion.com>
Cc: Rusty Russell <rusty@...tcorp.com.au>
LKML-Reference: <49F655B6.8020109@...nel.org>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 drivers/pci/htirq.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/pci/htirq.c b/drivers/pci/htirq.c
index bf7d6ce..4e9dd0f 100644
--- a/drivers/pci/htirq.c
+++ b/drivers/pci/htirq.c
@@ -98,6 +98,7 @@ int __ht_create_irq(struct pci_dev *dev, int idx, ht_irq_update_t *update)
 	int max_irq;
 	int pos;
 	int irq;
+	int node;
 
 	pos = pci_find_ht_capability(dev, HT_CAPTYPE_IRQ);
 	if (!pos)
@@ -125,7 +126,8 @@ int __ht_create_irq(struct pci_dev *dev, int idx, ht_irq_update_t *update)
 	cfg->msg.address_lo = 0xffffffff;
 	cfg->msg.address_hi = 0xffffffff;
 
-	irq = create_irq();
+	node = dev_to_node(&dev->dev);
+	irq = create_irq_nr(0, node);
 
 	if (irq <= 0) {
 		kfree(cfg);
--
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