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From: hch@lst.de (Christoph Hellwig)
Subject: [PATCH 7/7] nvme-pci: drop IRQ disabling on submission queue lock
Date: Thu, 17 May 2018 18:31:52 +0200	[thread overview]
Message-ID: <20180517163152.23155-8-hch@lst.de> (raw)
In-Reply-To: <20180517163152.23155-1-hch@lst.de>

From: Jens Axboe <axboe@kernel.dk>

Since we aren't sharing the lock for completions now, we don't
have to make it IRQ safe.

Reviewed-by: Christoph Hellwig <hch at lst.de>
Signed-off-by: Jens Axboe <axboe at kernel.dk>
Signed-off-by: Christoph Hellwig <hch at lst.de>
---
 drivers/nvme/host/pci.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 49c783801fd4..96cf91256fc8 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -895,9 +895,9 @@ static blk_status_t nvme_queue_rq(struct blk_mq_hw_ctx *hctx,
 
 	blk_mq_start_request(req);
 
-	spin_lock_irq(&nvmeq->sq_lock);
+	spin_lock(&nvmeq->sq_lock);
 	__nvme_submit_cmd(nvmeq, &cmnd);
-	spin_unlock_irq(&nvmeq->sq_lock);
+	spin_unlock(&nvmeq->sq_lock);
 	return BLK_STS_OK;
 out_cleanup_iod:
 	nvme_free_iod(dev, req);
@@ -1052,9 +1052,9 @@ static void nvme_pci_submit_async_event(struct nvme_ctrl *ctrl)
 	c.common.opcode = nvme_admin_async_event;
 	c.common.command_id = NVME_AQ_BLK_MQ_DEPTH;
 
-	spin_lock_irq(&nvmeq->sq_lock);
+	spin_lock(&nvmeq->sq_lock);
 	__nvme_submit_cmd(nvmeq, &c);
-	spin_unlock_irq(&nvmeq->sq_lock);
+	spin_unlock(&nvmeq->sq_lock);
 }
 
 static int adapter_delete_queue(struct nvme_dev *dev, u8 opcode, u16 id)
-- 
2.17.0

  parent reply	other threads:[~2018-05-17 16:31 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-17 16:31 RFC: handle completions outside the queue lock and split the queue lock Christoph Hellwig
2018-05-17 16:31 ` [PATCH 1/7] nvme: mark the result argument to nvme_complete_async_event volatile Christoph Hellwig
2018-05-17 16:31 ` [PATCH 2/7] nvme-pci: simplify nvme_cqe_valid Christoph Hellwig
2018-05-17 16:31 ` [PATCH 3/7] nvme-pci: remove cq check after submission Christoph Hellwig
2018-05-17 16:31 ` [PATCH 4/7] nvme-pci: move ->cq_vector == -1 check outside of ->q_lock Christoph Hellwig
2018-05-17 16:31 ` [PATCH 5/7] nvme-pci: handle completions outside of the queue lock Christoph Hellwig
2018-05-17 16:31 ` [PATCH 6/7] nvme-pci: split the nvme queue lock into submission and completion locks Christoph Hellwig
2018-05-17 16:31 ` Christoph Hellwig [this message]
2018-05-17 16:36 ` RFC: handle completions outside the queue lock and split the queue lock Jens Axboe
2018-05-17 16:44   ` Christoph Hellwig
2018-05-17 16:55 ` Keith Busch
2018-05-17 17:00   ` Christoph Hellwig
2018-05-17 17:05     ` Keith Busch
2018-05-17 17:08       ` Jens Axboe
  -- strict thread matches above, loose matches on Subject: below --
2018-05-18 14:52 [PATCHSET v2 0/7] Improve nvme completion handling Jens Axboe
2018-05-18 14:52 ` [PATCH 7/7] nvme-pci: drop IRQ disabling on submission queue lock Jens Axboe

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