From: "Matias Bjørling" <m@bjorling.me>
To: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
axboe@fb.com, keith.busch@intel.com,
linux-nvme@lists.infradead.org
Cc: "Matias Bjørling" <m@bjorling.me>
Subject: [PATCH 3/6] blk-mq: register device instead of disk
Date: Fri, 10 Jun 2016 14:20:59 +0200 [thread overview]
Message-ID: <1465561262-13789-4-git-send-email-m@bjorling.me> (raw)
In-Reply-To: <1465561262-13789-1-git-send-email-m@bjorling.me>
Enable devices without a gendisk instance to register itself with blk-mq
and expose the associated multi-queue sysfs entries.
Signed-off-by: Matias Bjørling <m@bjorling.me>
---
block/blk-mq-sysfs.c | 13 +++++--------
block/blk-sysfs.c | 4 ++--
drivers/md/dm.c | 2 +-
include/linux/blk-mq.h | 4 ++--
4 files changed, 10 insertions(+), 13 deletions(-)
diff --git a/block/blk-mq-sysfs.c b/block/blk-mq-sysfs.c
index 4ea4dd8..f67b5c1 100644
--- a/block/blk-mq-sysfs.c
+++ b/block/blk-mq-sysfs.c
@@ -380,9 +380,8 @@ static int blk_mq_register_hctx(struct blk_mq_hw_ctx *hctx)
return ret;
}
-void blk_mq_unregister_disk(struct gendisk *disk)
+void blk_mq_unregister_dev(struct device *dev, struct request_queue *q)
{
- struct request_queue *q = disk->queue;
struct blk_mq_hw_ctx *hctx;
struct blk_mq_ctx *ctx;
int i, j;
@@ -402,7 +401,7 @@ void blk_mq_unregister_disk(struct gendisk *disk)
kobject_del(&q->mq_kobj);
kobject_put(&q->mq_kobj);
- kobject_put(&disk_to_dev(disk)->kobj);
+ kobject_put(&dev->kobj);
q->mq_sysfs_init_done = false;
blk_mq_enable_hotplug();
@@ -426,10 +425,8 @@ static void blk_mq_sysfs_init(struct request_queue *q)
}
}
-int blk_mq_register_disk(struct gendisk *disk)
+int blk_mq_register_dev(struct device *dev, struct request_queue *q)
{
- struct device *dev = disk_to_dev(disk);
- struct request_queue *q = disk->queue;
struct blk_mq_hw_ctx *hctx;
int ret, i;
@@ -450,7 +447,7 @@ int blk_mq_register_disk(struct gendisk *disk)
}
if (ret)
- blk_mq_unregister_disk(disk);
+ blk_mq_unregister_dev(dev, q);
else
q->mq_sysfs_init_done = true;
out:
@@ -458,7 +455,7 @@ out:
return ret;
}
-EXPORT_SYMBOL_GPL(blk_mq_register_disk);
+EXPORT_SYMBOL_GPL(blk_mq_register_dev);
void blk_mq_sysfs_unregister(struct request_queue *q)
{
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 9920596..5223c5f 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -693,7 +693,7 @@ int blk_register_queue(struct gendisk *disk)
kobject_uevent(&q->kobj, KOBJ_ADD);
if (q->mq_ops)
- blk_mq_register_disk(disk);
+ blk_mq_register_dev(disk_to_dev(disk), q);
if (!q->request_fn)
return 0;
@@ -718,7 +718,7 @@ void blk_unregister_queue(struct gendisk *disk)
return;
if (q->mq_ops)
- blk_mq_unregister_disk(disk);
+ blk_mq_unregister_dev(disk_to_dev(disk), q);
if (q->request_fn)
elv_unregister_queue(q);
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index aba7ed9..9de3a9c 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2798,7 +2798,7 @@ static int dm_mq_init_request_queue(struct mapped_device *md,
dm_init_md_queue(md);
/* backfill 'mq' sysfs registration normally done in blk_register_queue */
- blk_mq_register_disk(md->disk);
+ blk_mq_register_dev(disk_to_dev(md->disk), q);
return 0;
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 2498fdf..ab6fb32 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -176,8 +176,8 @@ enum {
struct request_queue *blk_mq_init_queue(struct blk_mq_tag_set *);
struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set,
struct request_queue *q);
-int blk_mq_register_disk(struct gendisk *);
-void blk_mq_unregister_disk(struct gendisk *);
+int blk_mq_register_dev(struct device *, struct request_queue *);
+void blk_mq_unregister_dev(struct device *, struct request_queue *);
int blk_mq_alloc_tag_set(struct blk_mq_tag_set *set);
void blk_mq_free_tag_set(struct blk_mq_tag_set *set);
--
2.1.4
next prev parent reply other threads:[~2016-06-10 12:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-10 12:20 [PATCH 0/6] sysfs support for LightNVM Matias Bjørling
2016-06-10 12:20 ` [PATCH 1/6] nvme: refactor namespaces to support non-gendisk devices Matias Bjørling
2016-06-10 12:20 ` [PATCH 2/6] null_blk: refactor " Matias Bjørling
2016-06-10 12:20 ` Matias Bjørling [this message]
2016-06-10 12:21 ` [PATCH 4/6] lightnvm: let drivers control the lifetime of nvm_dev Matias Bjørling
2016-06-29 14:51 [PATCH 0/6] enable sysfs for lightnvm Matias Bjørling
2016-06-29 14:51 ` [PATCH 3/6] blk-mq: register device instead of disk Matias Bjørling
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