Thread (24 messages) 24 messages, 7 authors, 2021-07-08

[PATCH V2 2/6] nvme: pci: pass BLK_MQ_F_MANAGED_IRQ to blk-mq

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From: Ming Lei <hidden>
Date: 2021-07-02 15:07:42
Also in: linux-nvme, linux-scsi
Subsystem: nvm express driver, the rest · Maintainers: Keith Busch, Jens Axboe, Christoph Hellwig, Sagi Grimberg, Linus Torvalds

Revision v2 of 6 in this series.

Revisions (6)
  1. v1 [diff vs current]
  2. v2 current
  3. v4 [diff vs current]
  4. v5 [diff vs current]
  5. v6 [diff vs current]
  6. v7 [diff vs current]
blk-mq needs to know if the controller allocates managed irq vectors or
not, so pass the info to blk-mq.

The rule is that driver has to tell blk-mq if managed irq is used.

Signed-off-by: Ming Lei <redacted>
---
 drivers/nvme/host/pci.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index d3c5086673bc..093c56e1428e 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2317,7 +2317,8 @@ static void nvme_dev_add(struct nvme_dev *dev)
 		dev->tagset.queue_depth = min_t(unsigned int, dev->q_depth,
 						BLK_MQ_MAX_DEPTH) - 1;
 		dev->tagset.cmd_size = sizeof(struct nvme_iod);
-		dev->tagset.flags = BLK_MQ_F_SHOULD_MERGE;
+		dev->tagset.flags = BLK_MQ_F_SHOULD_MERGE |
+			BLK_MQ_F_MANAGED_IRQ;
 		dev->tagset.driver_data = dev;
 
 		/*
-- 
2.31.1
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