Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\blk-mq-sysfs.c Create Date:2022-07-28 17:13:56
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:blk_mq_sysfs_show

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

Type:ssize_t

Parameter:

TypeParameterName
struct kobject *kobj
struct attribute *attr
char *page
70  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_ctx_sysfs_entry, attr)
71  ctx = 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_ctx, kobj)
72  q = queue
74  If Not show Then Return -EIO
77  mutex_lock( & sysfs_lock)
78  res = show(ctx, page)
79  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.
80  Return res