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author | Damien Le Moal <damien.lemoal@wdc.com> | 2021-07-13 10:18:37 +0200 |
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committer | Jens Axboe <axboe@kernel.dk> | 2021-08-02 21:37:29 +0200 |
commit | 2bc1f6e442eec88fa60f1ee6bef2c9871227cf8a (patch) | |
tree | dfd7e57362f81dc1004d633097abb36f818df3c2 | |
parent | loop: raise media_change event (diff) | |
download | linux-2bc1f6e442eec88fa60f1ee6bef2c9871227cf8a.tar.xz linux-2bc1f6e442eec88fa60f1ee6bef2c9871227cf8a.zip |
block: remove blk-mq-sysfs dead code
In block/blk-mq-sysfs.c, struct blk_mq_ctx_sysfs_entry is not used to
define any attribute since the "mq" sysfs directory contains only
sub-directories (no attribute files). As a result, blk_mq_sysfs_show(),
blk_mq_sysfs_store(), and struct sysfs_ops blk_mq_sysfs_ops are all
unused and unnecessary. Remove all this unused code.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Link: https://lore.kernel.org/r/20210713081837.524422-1-damien.lemoal@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
-rw-r--r-- | block/blk-mq-sysfs.c | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/block/blk-mq-sysfs.c b/block/blk-mq-sysfs.c index 7b52e7657b2d..253c857cba47 100644 --- a/block/blk-mq-sysfs.c +++ b/block/blk-mq-sysfs.c @@ -45,60 +45,12 @@ static void blk_mq_hw_sysfs_release(struct kobject *kobj) kfree(hctx); } -struct blk_mq_ctx_sysfs_entry { - struct attribute attr; - ssize_t (*show)(struct blk_mq_ctx *, char *); - ssize_t (*store)(struct blk_mq_ctx *, const char *, size_t); -}; - struct blk_mq_hw_ctx_sysfs_entry { struct attribute attr; ssize_t (*show)(struct blk_mq_hw_ctx *, char *); ssize_t (*store)(struct blk_mq_hw_ctx *, const char *, size_t); }; -static ssize_t blk_mq_sysfs_show(struct kobject *kobj, struct attribute *attr, - char *page) -{ - struct blk_mq_ctx_sysfs_entry *entry; - struct blk_mq_ctx *ctx; - struct request_queue *q; - ssize_t res; - - entry = container_of(attr, struct blk_mq_ctx_sysfs_entry, attr); - ctx = container_of(kobj, struct blk_mq_ctx, kobj); - q = ctx->queue; - - if (!entry->show) - return -EIO; - - mutex_lock(&q->sysfs_lock); - res = entry->show(ctx, page); - mutex_unlock(&q->sysfs_lock); - return res; -} - -static ssize_t blk_mq_sysfs_store(struct kobject *kobj, struct attribute *attr, - const char *page, size_t length) -{ - struct blk_mq_ctx_sysfs_entry *entry; - struct blk_mq_ctx *ctx; - struct request_queue *q; - ssize_t res; - - entry = container_of(attr, struct blk_mq_ctx_sysfs_entry, attr); - ctx = container_of(kobj, struct blk_mq_ctx, kobj); - q = ctx->queue; - - if (!entry->store) - return -EIO; - - mutex_lock(&q->sysfs_lock); - res = entry->store(ctx, page, length); - mutex_unlock(&q->sysfs_lock); - return res; -} - static ssize_t blk_mq_hw_sysfs_show(struct kobject *kobj, struct attribute *attr, char *page) { @@ -198,23 +150,16 @@ static struct attribute *default_hw_ctx_attrs[] = { }; ATTRIBUTE_GROUPS(default_hw_ctx); -static const struct sysfs_ops blk_mq_sysfs_ops = { - .show = blk_mq_sysfs_show, - .store = blk_mq_sysfs_store, -}; - static const struct sysfs_ops blk_mq_hw_sysfs_ops = { .show = blk_mq_hw_sysfs_show, .store = blk_mq_hw_sysfs_store, }; static struct kobj_type blk_mq_ktype = { - .sysfs_ops = &blk_mq_sysfs_ops, .release = blk_mq_sysfs_release, }; static struct kobj_type blk_mq_ctx_ktype = { - .sysfs_ops = &blk_mq_sysfs_ops, .release = blk_mq_ctx_sysfs_release, }; |