linux-kernel - [PATCH 01/14] NVMe: Fix setup of affinity hint for unallocated queues

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Date:	Tue, 28 Jan 2014 09:38:47 +0100
From:	Alexander Gordeev <agordeev@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Alexander Gordeev <agordeev@...hat.com>,
	Keith Busch <keith.busch@...el.com>,
	Matthew Wilcox <willy@...ux.intel.com>,
	linux-nvme@...ts.infradead.org
Subject: [PATCH 01/14] NVMe: Fix setup of affinity hint for unallocated queues

IRQ affinity hints are attempted to setup for some or all
queues which have not yet been allocated: either on device
probe or resume. This update moves the setup after all
queues are successfully created.

Signed-off-by: Alexander Gordeev <agordeev@...hat.com>
---
 drivers/block/nvme-core.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index b59a93a..3dfb0d4 100644
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -1956,12 +1956,6 @@ static int nvme_setup_io_queues(struct nvme_dev *dev)
 	}
 	spin_unlock(&dev_list_lock);
 
-	cpu = cpumask_first(cpu_online_mask);
-	for (i = 0; i < nr_io_queues; i++) {
-		irq_set_affinity_hint(dev->entry[i].vector, get_cpu_mask(cpu));
-		cpu = cpumask_next(cpu, cpu_online_mask);
-	}
-
 	q_depth = min_t(int, NVME_CAP_MQES(readq(&dev->bar->cap)) + 1,
 								NVME_Q_DEPTH);
 	for (i = dev->queue_count - 1; i < nr_io_queues; i++) {
@@ -1986,6 +1980,12 @@ static int nvme_setup_io_queues(struct nvme_dev *dev)
 		}
 	}
 
+	cpu = cpumask_first(cpu_online_mask);
+	for (i = 0; i < nr_io_queues; i++) {
+		irq_set_affinity_hint(dev->entry[i].vector, get_cpu_mask(cpu));
+		cpu = cpumask_next(cpu, cpu_online_mask);
+	}
+
 	return 0;
 
  free_queues:
-- 
1.7.7.6

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