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kobject: documentation: Fix erroneous function example in kobject doc. 

Update the definitions of some functions listed in the kobject
document, since they have been changed.

Signed-off-by: Qi Zheng <arch0.zheng@gmail.com>
Link: https://lore.kernel.org/r/20200505061828.42952-1-arch0.zheng@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Qi Zheng 2020-05-05 14:18:28 +08:00 committed by Jonathan Corbet
parent 919e2bb8b6
commit 3eaa3bfa38
1 changed files with 14 additions and 12 deletions
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26
Documentation/core-api/kobject.rst
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@ -80,11 +80,11 @@ what is the pointer to the containing structure? You must avoid tricks
(such as assuming that the kobject is at the beginning of the structure)
and, instead, use the container_of() macro, found in ``<linux/kernel.h>``::
container_of(pointer, type, member)
container_of(ptr, type, member)
where:
* ``pointer`` is the pointer to the embedded kobject,
* ``ptr`` is the pointer to the embedded kobject,
* ``type`` is the type of the containing structure, and
* ``member`` is the name of the structure field to which ``pointer`` points.
@ -140,7 +140,7 @@ the name of the kobject, call kobject_rename()::
int kobject_rename(struct kobject *kobj, const char *new_name);
kobject_rename does not perform any locking or have a solid notion of
kobject_rename() does not perform any locking or have a solid notion of
what names are valid so the caller must provide their own sanity checking
and serialization.
@ -222,17 +222,17 @@ ksets, show and store functions, and other details. This is the one
exception where a single kobject should be created. To create such an
entry, use the function::
struct kobject *kobject_create_and_add(char *name, struct kobject *parent);
struct kobject *kobject_create_and_add(const char *name, struct kobject *parent);
This function will create a kobject and place it in sysfs in the location
underneath the specified parent kobject. To create simple attributes
associated with this kobject, use::
int sysfs_create_file(struct kobject *kobj, struct attribute *attr);
int sysfs_create_file(struct kobject *kobj, const struct attribute *attr);
or::
int sysfs_create_group(struct kobject *kobj, struct attribute_group *grp);
int sysfs_create_group(struct kobject *kobj, const struct attribute_group *grp);
Both types of attributes used here, with a kobject that has been created
with the kobject_create_and_add(), can be of type kobj_attribute, so no
@ -300,8 +300,10 @@ kobj_type::
void (*release)(struct kobject *kobj);
const struct sysfs_ops *sysfs_ops;
struct attribute **default_attrs;
const struct attribute_group **default_groups;
const struct kobj_ns_type_operations *(*child_ns_type)(struct kobject *kobj);
const void *(*namespace)(struct kobject *kobj);
void (*get_ownership)(struct kobject *kobj, kuid_t *uid, kgid_t *gid);
};
This structure is used to describe a particular type of kobject (or, more
@ -352,12 +354,12 @@ created and never declared statically or on the stack. To create a new
kset use::
struct kset *kset_create_and_add(const char *name,
struct kset_uevent_ops *u,
struct kobject *parent);
const struct kset_uevent_ops *uevent_ops,
struct kobject *parent_kobj);
When you are finished with the kset, call::
void kset_unregister(struct kset *kset);
void kset_unregister(struct kset *k);
to destroy it. This removes the kset from sysfs and decrements its reference
count. When the reference count goes to zero, the kset will be released.
@ -371,9 +373,9 @@ If a kset wishes to control the uevent operations of the kobjects
associated with it, it can use the struct kset_uevent_ops to handle it::
struct kset_uevent_ops {
int (*filter)(struct kset *kset, struct kobject *kobj);
const char *(*name)(struct kset *kset, struct kobject *kobj);
int (*uevent)(struct kset *kset, struct kobject *kobj,
int (* const filter)(struct kset *kset, struct kobject *kobj);
const char *(* const name)(struct kset *kset, struct kobject *kobj);
int (* const uevent)(struct kset *kset, struct kobject *kobj,
struct kobj_uevent_env *env);
};