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authorJens Axboe <axboe@fb.com>2017-01-13 14:43:58 -0700
committerJens Axboe <axboe@fb.com>2017-01-17 10:04:31 -0700
commitd34849913819a5e0cbfbe724dbe79df89278c524 (patch)
tree71b427fa3b22b30dc2038448ec06936018adaee4 /drivers/nvme/host/pci.c
parent945ffb60c11dfb228130f3f2bdde961cecb76671 (diff)
downloadblackbird-op-linux-d34849913819a5e0cbfbe724dbe79df89278c524.tar.gz
blackbird-op-linux-d34849913819a5e0cbfbe724dbe79df89278c524.zip
blk-mq-sched: allow setting of default IO scheduler
Add Kconfig entries to manage what devices get assigned an MQ scheduler, and add a blk-mq flag for drivers to opt out of scheduling. The latter is useful for admin type queues that still allocate a blk-mq queue and tag set, but aren't use for normal IO. Signed-off-by: Jens Axboe <axboe@fb.com> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Omar Sandoval <osandov@fb.com>
Diffstat (limited to 'drivers/nvme/host/pci.c')
-rw-r--r--drivers/nvme/host/pci.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 19beeb7b2ac2..e1b4e603b1cf 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1181,6 +1181,7 @@ static int nvme_alloc_admin_tags(struct nvme_dev *dev)
dev->admin_tagset.timeout = ADMIN_TIMEOUT;
dev->admin_tagset.numa_node = dev_to_node(dev->dev);
dev->admin_tagset.cmd_size = nvme_cmd_size(dev);
+ dev->admin_tagset.flags = BLK_MQ_F_NO_SCHED;
dev->admin_tagset.driver_data = dev;
if (blk_mq_alloc_tag_set(&dev->admin_tagset))
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