Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\blk-mq-sysfs.c Create Date:2022-07-28 17:14:00
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:blk_mq_hw_sysfs_show

Proto:static ssize_t blk_mq_hw_sysfs_show(struct kobject *kobj, struct attribute *attr, char *page)

Type:ssize_t

Parameter:

TypeParameterName
struct kobject *kobj
struct attribute *attr
char *page
112  entry = container_of - cast a member of a structure out to the containing structure*@ptr: the pointer to the member.*@type: the type of the container struct this is embedded in.*@member: the name of the member within the struct.(attr, structblk_mq_hw_ctx_sysfs_entry, attr)
113  hctx = container_of - cast a member of a structure out to the containing structure*@ptr: the pointer to the member.*@type: the type of the container struct this is embedded in.*@member: the name of the member within the struct.(kobj, structblk_mq_hw_ctx, kobj)
114  q = @queue: Pointer to the request queue that owns this hardware context.
116  If Not show Then Return -EIO
119  mutex_lock( & sysfs_lock)
120  res = show(hctx, page)
121  mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.
122  Return res