linux-kernel - [PATCH 3/3] nvme: allocate nvme

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Date:	Fri, 25 Mar 2016 14:36:32 -0700
From:	Shaohua Li <shli@...com>
To:	<linux-block@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:	<axboe@...com>, <hch@...radead.org>, <Kernel-team@...com>
Subject: [PATCH 3/3] nvme: allocate nvme_queue in correct node

nvme_queue is per-cpu queue (mostly). Allocating it in node where blk-mq
will use it.

Signed-off-by: Shaohua Li <shli@...com>
---
 drivers/nvme/host/pci.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index f8db70a..8d24701 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1138,9 +1138,9 @@ static int nvme_alloc_sq_cmds(struct nvme_dev *dev, struct nvme_queue *nvmeq,
 }
 
 static struct nvme_queue *nvme_alloc_queue(struct nvme_dev *dev, int qid,
-							int depth)
+							int depth, int node)
 {
-	struct nvme_queue *nvmeq = kzalloc(sizeof(*nvmeq), GFP_KERNEL);
+	struct nvme_queue *nvmeq = kzalloc_node(sizeof(*nvmeq), GFP_KERNEL, node);
 	if (!nvmeq)
 		return NULL;
 
@@ -1318,7 +1318,8 @@ static int nvme_configure_admin_queue(struct nvme_dev *dev)
 
 	nvmeq = dev->queues[0];
 	if (!nvmeq) {
-		nvmeq = nvme_alloc_queue(dev, 0, NVME_AQ_DEPTH);
+		nvmeq = nvme_alloc_queue(dev, 0, NVME_AQ_DEPTH,
+			dev_to_node(dev->dev));
 		if (!nvmeq)
 			return -ENOMEM;
 	}
@@ -1372,11 +1373,15 @@ static void nvme_watchdog_timer(unsigned long data)
 
 static int nvme_create_io_queues(struct nvme_dev *dev)
 {
-	unsigned i, max;
+	unsigned i, max, start;
 	int ret = 0;
+	int node;
 
+	start = dev->queue_count;
 	for (i = dev->queue_count; i <= dev->max_qid; i++) {
-		if (!nvme_alloc_queue(dev, i, dev->q_depth)) {
+		node = blk_mq_estimate_hw_queue_node(
+			dev->max_qid - start + 1, i - start);
+		if (!nvme_alloc_queue(dev, i, dev->q_depth, node)) {
 			ret = -ENOMEM;
 			break;
 		}
-- 
2.8.0.rc2