From 8682b92e5ab852b93739a0f2b261fff4c733be57 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 28 Jun 2022 19:18:50 +0200 Subject: [PATCH] blk-mq: cleanup disk sysfs registration Pass a gendisk to the sysfs register/unregister functions and give them descriptive names. Also move the unregistration helper next to the one doing the registration. Signed-off-by: Christoph Hellwig Reviewed-by: Bart Van Assche Link: https://lore.kernel.org/r/20220628171850.1313069-7-hch@lst.de Signed-off-by: Jens Axboe --- block/blk-mq-sysfs.c | 39 ++++++++++++++++++++------------------- block/blk-mq.h | 3 ++- block/blk-sysfs.c | 9 ++++----- include/linux/blk-mq.h | 1 - 4 files changed, 26 insertions(+), 26 deletions(-) diff --git a/block/blk-mq-sysfs.c b/block/blk-mq-sysfs.c index ee6efe2..93997d2 100644 --- a/block/blk-mq-sysfs.c +++ b/block/blk-mq-sysfs.c @@ -203,22 +203,6 @@ static int blk_mq_register_hctx(struct blk_mq_hw_ctx *hctx) return ret; } -void blk_mq_unregister_dev(struct device *dev, struct request_queue *q) -{ - struct blk_mq_hw_ctx *hctx; - unsigned long i; - - lockdep_assert_held(&q->sysfs_dir_lock); - - queue_for_each_hw_ctx(q, hctx, i) - blk_mq_unregister_hctx(hctx); - - kobject_uevent(q->mq_kobj, KOBJ_REMOVE); - kobject_del(q->mq_kobj); - - q->mq_sysfs_init_done = false; -} - void blk_mq_hctx_kobj_init(struct blk_mq_hw_ctx *hctx) { kobject_init(&hctx->kobj, &blk_mq_hw_ktype); @@ -251,16 +235,16 @@ void blk_mq_sysfs_init(struct request_queue *q) } } -int __blk_mq_register_dev(struct device *dev, struct request_queue *q) +int blk_mq_sysfs_register(struct gendisk *disk) { + struct request_queue *q = disk->queue; struct blk_mq_hw_ctx *hctx; unsigned long i, j; int ret; - WARN_ON_ONCE(!q->kobj.parent); lockdep_assert_held(&q->sysfs_dir_lock); - ret = kobject_add(q->mq_kobj, &dev->kobj, "%s", "mq"); + ret = kobject_add(q->mq_kobj, &disk_to_dev(disk)->kobj, "mq"); if (ret < 0) goto out; @@ -288,6 +272,23 @@ unreg: return ret; } +void blk_mq_sysfs_unregister(struct gendisk *disk) +{ + struct request_queue *q = disk->queue; + struct blk_mq_hw_ctx *hctx; + unsigned long i; + + lockdep_assert_held(&q->sysfs_dir_lock); + + queue_for_each_hw_ctx(q, hctx, i) + blk_mq_unregister_hctx(hctx); + + kobject_uevent(q->mq_kobj, KOBJ_REMOVE); + kobject_del(q->mq_kobj); + + q->mq_sysfs_init_done = false; +} + void blk_mq_sysfs_unregister_hctxs(struct request_queue *q) { struct blk_mq_hw_ctx *hctx; diff --git a/block/blk-mq.h b/block/blk-mq.h index a92639f..54e20ed 100644 --- a/block/blk-mq.h +++ b/block/blk-mq.h @@ -118,7 +118,8 @@ static inline struct blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *q, */ extern void blk_mq_sysfs_init(struct request_queue *q); extern void blk_mq_sysfs_deinit(struct request_queue *q); -extern int __blk_mq_register_dev(struct device *dev, struct request_queue *q); +int blk_mq_sysfs_register(struct gendisk *disk); +void blk_mq_sysfs_unregister(struct gendisk *disk); int blk_mq_sysfs_register_hctxs(struct request_queue *q); void blk_mq_sysfs_unregister_hctxs(struct request_queue *q); extern void blk_mq_hctx_kobj_init(struct blk_mq_hw_ctx *hctx); diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index b725067..85ea43e 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -812,18 +812,17 @@ struct kobj_type blk_queue_ktype = { */ int blk_register_queue(struct gendisk *disk) { - int ret; - struct device *dev = disk_to_dev(disk); struct request_queue *q = disk->queue; + int ret; mutex_lock(&q->sysfs_dir_lock); - ret = kobject_add(&q->kobj, &dev->kobj, "%s", "queue"); + ret = kobject_add(&q->kobj, &disk_to_dev(disk)->kobj, "queue"); if (ret < 0) goto unlock; if (queue_is_mq(q)) - __blk_mq_register_dev(dev, q); + blk_mq_sysfs_register(disk); mutex_lock(&q->sysfs_lock); mutex_lock(&q->debugfs_mutex); @@ -919,7 +918,7 @@ void blk_unregister_queue(struct gendisk *disk) * structures that can be modified through sysfs. */ if (queue_is_mq(q)) - blk_mq_unregister_dev(disk_to_dev(disk), q); + blk_mq_sysfs_unregister(disk); blk_crypto_sysfs_unregister(q); mutex_lock(&q->sysfs_lock); diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 0fd96e9..43aad0d 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -691,7 +691,6 @@ struct gendisk *blk_mq_alloc_disk_for_queue(struct request_queue *q, struct request_queue *blk_mq_init_queue(struct blk_mq_tag_set *); int blk_mq_init_allocated_queue(struct blk_mq_tag_set *set, struct request_queue *q); -void blk_mq_unregister_dev(struct device *, struct request_queue *); void blk_mq_destroy_queue(struct request_queue *); int blk_mq_alloc_tag_set(struct blk_mq_tag_set *set); -- 2.7.4